You’re standing at the fruit bowl, banana in hand, running the same mental math a lot of people run when they’ve started paying attention to arginine and lysine: is this thing secretly working against me? The honest answer is no. Bananas carry a small amount of both amino acids, roughly a gram of protein total in a medium one, and the two amino acids come out so close to even that the gap won’t show up anywhere except a spreadsheet. Put it back in the bowl. Eat it. We’ll get into why.

I get why the question comes up, though. Once you start reading ingredient labels and food charts for one thing, everything on the counter starts to look suspicious. A banana is such an easy, grab-and-go snack that it feels important to know whether it’s quietly sabotaging you. It isn’t. But it’s worth understanding why, because the reasoning applies to a lot more than just this one piece of fruit.

So, are bananas high in lysine or arginine?
Neither. That’s the short version. Bananas are what nutrition folks call a low-protein food, and both lysine and arginine are amino acids that ride along with protein. Less protein overall means less of everything protein-related, arginine included, lysine included. If you lined up a hundred common foods by arginine content, a banana would land somewhere in the unremarkable middle, not on the high end where nuts, seeds, and chocolate sit, and not at the very bottom either.

The gram-for-gram comparison is the detail that sends people down this rabbit hole in the first place, and it turns out to be a near tie. Standard nutrition tables put a banana’s lysine and arginine about a thousandth of a gram apart per hundred grams of fruit, a difference smaller than the weighing error on a kitchen scale. If you’re picturing a banana as a food that could flip a cold sore switch, that’s giving one piece of fruit a lot more credit than the actual numbers support.

What’s actually in a banana, amino-acid-wise?
Here’s the thing about fruit in general: it’s mostly water, natural sugar, and fiber, with only a small amount of protein tucked in. A medium banana has roughly a gram of protein, which is nothing next to a chicken breast or a handful of almonds. Every amino acid a banana contains, lysine and arginine included, is measured against that small protein baseline, so both numbers come out low no matter how you slice it.

What a banana does bring to the table is potassium, a bit of vitamin B6, and enough fiber to actually keep you full for a while, which is honestly the more useful thing to know about it. I think of bananas as the reliable, slightly boring friend of the fruit world. They show up, they do their job, they don’t cause drama. Amino acid drama definitely isn’t on the resume.

For the specific numbers, USDA FoodData Central is the standard reference if you want to go look them up yourself, and I’d genuinely encourage that over trusting any single blog post, including this one, if you need precision down to the milligram. What matters for day-to-day decisions is the shape of the picture: small amounts of both amino acids, roughly balanced, nothing to build a strategy around.

How does a banana compare to the foods that actually rank high?
Put a banana next to the foods that actually rank high and the gap is obvious. The foods that dominate any real list of arginine rich foods are the protein-dense ones: pumpkin seeds, peanuts, almonds, soybeans, and yes, chocolate, which is the one that always gets a groan out of people mid-elimination-diet. Meat, poultry, and dairy carry meaningful amounts too. These foods aren’t in the same category as a banana. They’re not even playing the same game.

A banana next to a handful of walnuts is like comparing a light drizzle to a fire hose. Both technically involve water, but only one of them is going to soak you. If you’re building a mental list of what to actually watch, put nuts, seeds, whole grains, and chocolate on it: those are the foods carrying enough arginine to matter. If you want the fuller rundown of what fruits are high in arginine specifically, that’s a more useful comparison to work from than trying to rank bananas against foods they were never competing with.

Why does the lysine-to-arginine ratio even come up?
The idea traces back to a popular wellness practice: some people who deal with cold sores keep an eye on their ratio of lysine to arginine, on the theory that a higher lysine, lower arginine pattern in the diet might be helpful for outbreak frequency. It’s a longstanding piece of folk health advice, the kind that gets passed around in forums and family group chats, and plenty of people swear by it based on their own experience.

Here’s what this actually is: a dietary pattern some people find worth trying, based more on personal experience and forum wisdom than on settled science. I’m not going to tell you to treat it as a cure or a guarantee. The research on lysine-to-arginine ratios and cold sores is mixed and nowhere near conclusive enough to build hard rules around. If cold sores are a recurring issue for you, that’s a conversation for a healthcare provider, not a fruit bowl inventory.

If cold sores are something you already manage with a healthcare provider, this is worth mentioning at your next visit rather than guessing your way through fruit choices alone.

Should you worry about bananas if you’re watching your arginine intake?
No, and here’s the practical reason why. Because bananas are low in both amino acids, they simply don’t carry enough of either one to meaningfully move your daily ratio in any direction. Cutting bananas out of your diet in the name of arginine control is a bit like skipping the crosswalk to avoid a parked car. It’s not the thing that’s going to get you.

The foods that actually matter are the concentrated ones we already talked about: nuts, seeds, chocolate, and certain grains. If you’re doing a genuine review of your intake, that’s where your attention and your label-reading energy belong. A banana can stay in the regular rotation without a second thought.

What other fruits should you check if you’re being careful?
Bananas aren’t the only fruit that gets this question. Grapes and strawberries come up just as often, usually from the same person mid-scroll, checking every fruit in the kitchen after reading one article about cold sores. The honest read: strawberries actually come in below bananas on arginine, while grapes run higher than most fruit, though even grapes carry a tiny amount next to nuts or chocolate. If either one is a daily habit for you, the specific numbers are worth a quick look.

A realistic, no-stress way to balance lysine and arginine
If you only take one thing from this, let it be this: stop auditing individual pieces of fruit and start looking at your overall pattern. One banana isn’t going to make or break anything. What actually shapes your ratio over time is what a normal week of meals looks like: what’s for dinner most nights, what you reach for out of habit, whether meat, dairy, and legumes show up regularly. A single banana barely registers in that bigger pattern.

A low-friction approach looks something like this. Keep eating the fruit you already like, bananas included. If you’re specifically trying to lean lysine-forward, lean into foods that are naturally rich in it, like most meats, fish, dairy, and legumes, without treating every other food as suspect. And if nuts, seeds, or chocolate are a daily habit and cold sores are a recurring frustration, that’s a more reasonable place to experiment with moderation than your fruit bowl.

I’ll be honest, I’m generally against turning grocery shopping into a spreadsheet exercise. Most of the time, the realistic move is the boring one: eat a varied diet, don’t treat any single food as either a villain or a miracle cure, and save your worry for the categories that actually carry a real amount of the amino acid in question. So here’s the one thing to actually do: keep eating the fruit you like, bananas included, and if you’re going to pay closer attention to anything, let it be how often nuts, seeds, and chocolate show up in your week. That’s a five-second check, and it’s the one that actually changes anything.

Quick answers: bananas, lysine, and arginine
Do bananas have arginine?
Yes, in a small amount. Bananas are a low-protein fruit, so every amino acid they contain, arginine included, shows up in modest quantities compared to protein-dense foods like meat, dairy, nuts, and seeds. Honestly, I never think about it while I’m peeling one, and you don’t need to either.

Is the banana lysine arginine ratio a concern?
Not really, and I wouldn’t lose sleep over the math. Bananas carry nearly identical small amounts of the two, and both are small enough that they won’t budge a broader dietary pattern.

What is the lysine content of bananas compared to arginine?
They’re a near tie, separated by a rounding error in standard food tables, close enough that I wouldn’t bother tracking it on your end. Neither amino acid shows up in a large enough amount to make bananas a notable source of either one, so you can let that one go.

Are there low arginine fruits for cold sores that are safer bets than others?
Most common fruits, bananas among them, are naturally low in arginine simply because fruit tends to be low in protein overall, so you’re not picking a loser here. If you want the exact number for a specific fruit, USDA FoodData Central is the source I’d actually trust, more than guessing based on taste or texture.

Should I stop eating bananas if I’m watching my arginine intake?
There’s no real reason to, and I wouldn’t. Bananas are unlikely to be the food responsible for tipping an arginine-conscious diet off balance. If you want to keep an eye on something, watch the concentrated sources instead, like nuts, seeds, and chocolate.

Open your fridge drawer right now and the fruit sitting in it, whatever it is, is probably not doing much for your arginine intake. That’s the honest answer up front: the fruits that actually carry a meaningful amount are a short list, coconut meat, grapes (yes, really), avocado, dried apricots, pomegranate, watermelon, and dates, and even the best of them are modest next to a handful of almonds or a can of chickpeas. If you came here hoping fruit was a shortcut to a high-arginine diet, I’d rather tell you that now than let you build a whole plan around cantaloupe.

Fruit still earns a place at the edges of an arginine-friendly diet: a coconut habit you already have, an avocado on toast, a spoonful of pomegranate seeds over yogurt. Let’s go through who’s actually on the list, why they’re there, and where they fit into a week that also has to include dinner, a job, and whatever your kid just spilled on the counter.

So which fruits actually have arginine?
Ranked roughly from most notable to least, here’s who shows up when you actually look at the numbers instead of guessing:

Coconut meat, fresh or dried, is the fruit most likely to surprise you.
Grapes are the sleeper of the group: the standard red or green table grape carries more arginine, cup for cup, than any other everyday fresh fruit here, which surprises nearly everyone who looks it up.
Avocado carries a real, if smaller, amount, and it’s the one you’re most likely to already be eating regularly.
Dried apricots punch above their weight because drying concentrates everything in the fruit, into a smaller, denser bite.
Pomegranate and its seeds add a modest amount, more notable for the antioxidants that come along with it.
Watermelon is on nearly every list you’ll find about this topic, but for a slightly different reason we’ll get into.
Dates land near the bottom of this group but still ahead of most fresh fruit, for the same drying-concentration reason as apricots.
That’s the list. It’s short on purpose, because past this point you’re into fruit that just doesn’t carry much arginine to begin with, the kind of number that doesn’t move the needle no matter how many you eat.

Why fruit isn’t where arginine really lives
Arginine is an amino acid, which means it’s a building block of protein, and it shows up in the biggest amounts wherever protein shows up in the biggest amounts. That’s nuts and seeds first (pumpkin seeds, peanuts, walnuts), then meat, poultry, and seafood, then dairy and soy. Fruit is mostly water, fiber, and sugar. It’s built to give you vitamin C and quick energy, not amino acids.

I say this as someone who has, more than once, tried to solve a nutrition problem by just eating more fruit because it felt like the pleasant option. It rarely works out the way I hoped. Fruit is wonderful for a hundred reasons, but stacking your arginine hopes on a fruit bowl is a bit like trying to fill your gas tank with a watering can. You’ll get somewhere, eventually, technically.

To put it in scale, a cup of pumpkin seeds can carry something like 7 grams of arginine on its own, and a chicken breast beats every fruit on this list combined. Fruit was never built to compete with nuts and meat on this particular nutrient, and that’s fine. It has other jobs to do.

If you’re building out a fuller picture of where arginine actually shows up in a typical diet, that’s really a job for the whole arginine rich foods list rather than this one narrower question, since fruit is genuinely one of the smaller categories on that list, sitting well behind nuts, seeds, and meat.

Coconut and avocado: the two fruits worth noticing
These two are the closest thing to a real answer on this list, so they earn a closer look.

Coconut meat, the white flesh you scoop out of a fresh coconut or buy shredded and unsweetened, is the standout. It’s not a fruit most people eat by the bowlful, but it shows up constantly in small amounts: a spoonful of shredded coconut on oatmeal, coconut flakes in trail mix, coconut milk in a curry. None of those are large servings, but they add up faster than you’d expect from something that reads as a garnish. Fresh coconut is more of a project, cracking one open takes some doing, and a whole one runs a few dollars, but a bag of unsweetened shredded coconut lasts through weeks of spoonfuls and works out to pennies per serving, so the everyday version of this habit is cheap even if the whole-fruit version isn’t. If you’re someone who already cooks with coconut milk or keeps unsweetened flakes around for baking, you’re getting more out of that habit than the ingredient list would suggest.

Avocado is the more realistic everyday option, mostly because half an avocado on toast is already a normal Tuesday breakfast for a lot of people, not a special effort. It has less arginine than coconut per typical serving, but it’s a food people actually eat in real quantities, regularly, without having to think about it as a “health food.” That’s the part that actually matters: a food you eat three times a week beats a better food you eat once a year. Avocados aren’t always cheap, prices swing with the season and can climb to two or three dollars each, but half an avocado a few times a week is manageable if you buy them a few days ahead and let them ripen on the counter instead of paying extra for ones that are ready to eat today.

A quick note on portions, since “how much” questions always come up here: neither of these is something you need to measure out with a kitchen scale. A normal serving, a quarter to a half avocado, a couple tablespoons of shredded coconut, is the useful amount. Eating triple that doesn’t triple the benefit in any meaningful way, it just triples the calories.

Dried fruit: apricots, dates, and raisins
Drying fruit removes water and leaves everything else behind in a smaller package, which is why a handful of dried apricots can outperform a whole fresh one on a nutrient-per-ounce basis. Apricots are the standout in this group. Dates are close behind. Raisins bring up the rear of this trio, though like all dried fruit they read higher ounce for ounce than the fresh grapes they started as.

Here’s the honest trade-off, and I’d be doing you a disservice if I skipped it: drying concentrates the sugar right along with everything else. A small handful of dried apricots is a reasonable snack. A large handful eaten straight from the bag while you’re half-watching a show is easy to do and adds up in calories and sugar fast, in a way fresh fruit doesn’t because fresh fruit is mostly water and takes longer to eat past the point of feeling full. My rule for myself, and the one I’d actually hand you, is to treat dried fruit like a topping rather than a snack on its own: a spoonful of chopped dried apricots on yogurt or oatmeal, a few dates blended into a smoothie, rather than a bag eaten on the couch.

Unsulfured, no-sugar-added dried apricots are worth looking for specifically. Some brands add extra sugar syrup on top of what’s already naturally there, which doesn’t do you any favors and isn’t necessary.

What about watermelon and pomegranate?
Watermelon’s real claim to fame here is citrulline, a different amino acid that’s especially concentrated in the white rind, the part most of us throw away. Your body converts citrulline into arginine after you eat it, which is why watermelon keeps coming up in arginine conversations even though the fruit itself doesn’t deliver much arginine directly. The connection is real, it just runs through citrulline first. If you’re someone who juices the rind or blends the whole thing, you’re getting more of that citrulline benefit than someone eating just the sweet red center.

Pomegranate is more straightforward: the seeds (arils, technically) carry a modest, direct amount of arginine, plus the antioxidants that get most of pomegranate’s attention anyway. It’s not going to outrank avocado or coconut. Pomegranates usually run a couple of dollars each, and one deseeded pomegranate gives you enough seeds for four or five servings scattered over yogurt, oatmeal, or a salad, so the fruit itself isn’t cheap but the cost per spoonful is small.

Do bananas, grapes, or strawberries make the list?
Short answer: bananas and strawberries, not really. Grapes, surprisingly, yes, they’re the one favorite that actually earns a spot, which is why they made the ranked list above. All three show up in search results next to arginine constantly, mostly because people already know these fruits well and want to know if a favorite counts. Bananas are worth a longer look, but for a different amino acid: their lysine and arginine levels run close to even, neither one clearly ahead, and that comparison deserves its own answer rather than a quick aside here, so the question as people actually type it, are bananas high in lysine or arginine, gets a proper answer of its own.

Strawberries are the straightforward one: mostly water and sugar, with only trace amounts of arginine, nowhere near enough to change your day even if you ate a whole bowl. Grapes are the quiet surprise of this whole list, because the standard red or green table grape carries more arginine than almost any other common fruit, a couple times a banana’s number, though still a small amount next to nuts or meat. Strawberries stay worth eating for plenty of other reasons, vitamin C, fiber, the simple fact that they’re pleasant to eat, just not this one. If you want the specifics spelled out with actual numbers, the questions “are grapes high in arginine” and “are strawberries high in arginine” each get a full answer of their own.

A realistic way to work arginine-friendly fruit into your week
This is the part I actually care about, because a list of foods is useless until it turns into something you do on a Tuesday without thinking too hard about it. A few swaps that take under a minute each:

Half an avocado, mashed, on toast instead of just butter. Add a squeeze of lime and a pinch of salt and you’ll forget you were doing this for a nutritional reason at all.
A tablespoon of unsweetened shredded coconut stirred into oatmeal or yogurt in the morning.
A small handful, maybe a dozen, of unsweetened dried apricots as your afternoon snack instead of whatever’s within arm’s reach at 3pm.
A spoonful of pomegranate seeds over yogurt, oatmeal, or a green salad. They keep in the fridge for about a week once you’ve deseeded one, so it’s not a one-and-done effort.
Watermelon as-is in summer, no changes needed, just don’t expect it to be doing the heavy lifting.
If you only pick one thing off this list, make it the avocado toast or the coconut-in-oatmeal swap, since both are things you can fold into a meal you’re already making rather than a new task you have to remember to do. Write the short list, coconut, avocado, dried apricots, pomegranate seeds, on the back of your grocery receipt or in your phone’s notes app before you shop, and you’ll actually buy them instead of standing in the produce aisle trying to remember what this article said.

Is fruit enough, or do you need more than that?
Honestly, no, not on its own, and I’d rather tell you that plainly than let you assume a fruit bowl is doing more than it is. If you’re looking into arginine because of a specific goal, whether that’s general wellness curiosity or something more targeted, fruit alone isn’t going to get you into a meaningfully “high arginine” range. Nuts, seeds, poultry, and legumes are where the real volume is, and if that’s the direction you’re actually trying to go, the fuller list of arginine-rich foods is the better place to build a real plan from.

Where fruit earns its spot is as the easy, tasty edge of that plan: the avocado you were already going to eat, the pomegranate seeds that make yogurt feel like dessert, the dried apricots that beat whatever’s in the vending machine. Build the rest of your plan around nuts, seeds, and protein, and let fruit be the part that makes it feel good instead of like a chore. If you do nothing else this week, just make the avocado toast. That’s the whole assignment.

This is general wellness information, not medical advice. Talk to a healthcare professional about your specific situation, especially if arginine intake is relevant to a medical condition or medication you’re taking.

Short answer: for a fruit, actually yes. The standard red or green table grape carries more arginine than almost anything else in the produce drawer. The catch is scale: a cup of grapes still holds a small fraction of what a handful of peanuts delivers, so if a cold sore is brewing and someone told you to watch your arginine, grapes deserve a look, but they’re rarely the food doing the real work against you.

I get why the question comes up though. Grapes are sweet, they’re everywhere in late summer, and once you start reading ingredient lists and amino acid charts for one reason, you start second-guessing everything in the fruit bowl. So let’s look at the numbers instead of guessing, since the guessing is what makes this stuff feel scarier than it is.

So, Are Grapes High in Arginine?
By fruit standards, yes. Grapes are a low-protein food overall, less than a gram of protein in a whole cup, but they’re an oddball: an unusually large slice of that protein is arginine. USDA’s standard reference table puts the common red or green table grape at about 0.13 grams of arginine per 100 grams of fruit, which is more than double a banana’s number and roughly twenty times an apple’s. Still, compare that to an ounce of peanuts or almonds, which packs several grams of protein and several times the arginine into a fraction of the volume, and grapes aren’t in the same conversation. Walnuts carry a few times more arginine per serving than grapes do, which tells you most of what you need to know about the gap between fruit and nuts.

I say this as someone who used to treat every “high in X” headline like a personal indictment of my snack drawer. Even grapes, the quiet front-runner of the fruit aisle, are a minor player in your daily arginine intake. The foods that actually register are the ones with real protein density: nuts, seeds, meat, dairy. On the chart that matters, grapes sit above apples and bananas but far below anything with real protein in it, and that second gap is the one worth caring about.

Why Are So Many People Asking This?
Almost always, it’s one of two reasons. The first is cold sores. There’s a long-standing idea in the wellness and alternative-health world that the ratio of lysine to arginine in your diet affects how often the herpes simplex virus (HSV) that causes cold sores flares up, the theory being that arginine feeds viral replication while lysine competes against it. Practitioners of this approach have sworn by lysine-heavy, arginine-light eating for decades, and you’ll find it repeated across supplement forums and wellness blogs as settled fact.

I want to be straight with you here: mainstream medical consensus does not treat this as an established, proven mechanism. Some small studies have looked at lysine supplementation and cold sore frequency with mixed, inconclusive results, and dietary arginine restriction specifically is even less studied. It’s a real and widely discussed idea, not a myth exactly, but it’s also not a guarantee, and it’s not something I’d build a strict diet around without talking to a doctor first, especially since cold sores have plenty of other triggers, like stress, sun exposure, and being run down.

The second reason people ask is more clinical: some people are managing arginine intake for genuine medical reasons, like certain metabolic conditions, and are working from a doctor or dietitian’s specific list of foods to limit. If that’s you, this article can help you understand where grapes fall on the general food map, but your actual plan should come from whoever gave you the restriction, not from a blog post. Those lists are usually built around lab values and a much wider range of foods than just fruit, so grapes are likely a small line item on a much longer sheet.

How Much Arginine Is Really in a Cup of Grapes?
Call it about two-tenths of a gram. USDA’s reference table has raw table grapes at roughly 0.13 grams of arginine per 100 grams, so a full cup lands around 0.2 grams: a standout number by fruit standards, a small one by food standards.

For context, a typical adult eating a normal mixed diet takes in several grams of arginine a day just from ordinary meals, meat, dairy, grains, legumes doing most of that work. A cup of grapes contributes a few percent of that total. If you ate nothing but grapes for arginine purposes, you’d be starving in every other way long before arginine became your problem.

That’s the number people want when they search “are grapes high in arginine”: enough to make grapes the most interesting fruit on this particular chart, and still small enough that what’s on the plate next to them matters far more.

Grapes vs. the Foods That Are Genuinely High in Arginine
Real arginine density looks like nuts, seeds, and meat. Peanuts, almonds, walnuts, and pumpkin seeds are consistently near the top of any arginine rich foods list, along with chicken, pork, and seafood. Arginine density tracks protein density almost one for one, which is why a three-ounce serving of chicken or a handful of pumpkin seeds outweighs a whole bowl of grapes on this particular chart.

This is the comparison that matters if you’re trying to manage your intake. For most people, cutting grapes to lower arginine is minor-league stuff, a small line item next to a daily handful of almonds or a chocolate habit. The foods worth paying attention to are the protein-dense ones: nuts and seeds especially, since they’re often eaten by the handful without much thought. If you want the full breakdown of what ranks highest, our arginine rich foods guide lays out the heavy hitters in one place.

What About the Lysine Side of Grapes?
Here’s where grapes get genuinely interesting. Their lysine content is tiny, around 0.027 grams per 100 grams in USDA’s table, which means a grape carries roughly four to five times more arginine than lysine. That’s more relevant than it sounds. For the cold-sore theory, what matters is the ratio between the two amino acids in a food, more than the raw amount of either one.

Here’s how that ratio works if you ever want to apply it: a food high in lysine relative to its arginine counts as favorable under that framework, and a food where arginine dominates, chocolate and nuts are the usual examples people flag, counts as less favorable. Grapes lean the same direction chocolate and nuts lean, toward arginine, just at a much smaller absolute dose, and that tilt is why grapes and grape juice occasionally show up on cold-sore caution lists while apples and strawberries never do. If you’re the type who tracks this on a spreadsheet during a flare week, grapes have honestly earned a line on it. Keep most of the scrutiny on the chocolate and nuts, though, since they carry many times the total amount. For everyone else, the amounts stay small enough that grapes are a minor character either way.

If You’re Watching Arginine, What Should You Snack On Instead?
Since even the fruit-aisle leader tops out around two-tenths of a gram per cup, most people don’t need to swap grapes out for arginine reasons. But if you’re being strict about the ratio during a flare week, or just want variety, every fruit below runs lower than grapes, since fruit as a whole tends to be low in protein and therefore low in most individual amino acids.

Apples, sliced with a little cinnamon if you want something that feels like more than a raw apple
Pears, which have a similar low-protein profile to grapes
Berries, strawberries, blueberries, raspberries, all decent low-arginine choices
Mangoes and peaches for something juicier in the summer months
If strawberries specifically are on your radar, we’ve taken a closer look at whether strawberries are high in arginine, and they land noticeably lower than grapes. The banana question works the same way, whether bananas lean more toward lysine or arginine, and it’s a different comparison worth knowing if you’re building out a full swap list.

Quick Answers: Grapes and Arginine
Are raisins higher in arginine than fresh grapes?
Ounce for ounce, yes, raisins will read higher simply because drying concentrates everything, sugar, minerals, and amino acids alike, into a smaller amount of food. A small box of raisins is a lot more grape than it looks like, sometimes several bunches’ worth once the water is gone. That said, raisins start from a fruit whose arginine is measured in tenths of a gram per cup, so even concentrated, they’re not competing with nuts or meat.

Do red grapes and green grapes differ in arginine content?
Not meaningfully. Color differences come down to pigment, not protein content, and grape amino acid profiles are close enough across the board that color isn’t a useful signal here. Pick whichever you like eating more.

Does grape juice change the picture?
Not much. A glass of grape juice carries somewhat less arginine than the same amount of whole grapes in USDA’s tables, but it still counts the same way the fruit does, just slightly diluted, and it drops the fiber along the way. If you’re tracking arginine closely, treat juice like grapes, and if you’re not, this is one more thing you don’t need to think about.

This is general wellness information, not medical advice. Talk to a healthcare professional about your specific situation, especially if you’re managing arginine intake for a diagnosed condition or dealing with frequent cold sores.

So here’s the one thing to actually do with all this: if you’re stocking a low-arginine fruit bowl, grab whichever of these, grapes included, you’ll eat consistently. The best snack is the one still in your fridge on a Thursday, and a perfectly good apple counts for more than a fancier option you bought once and let go soft on the counter.