Best Clear Whey Protein Isolate of 2026

Peach Tea is the flavour that finally reads as iced tea rather than a supplement in disguise, and that is the whole case for GRAMMS. Underneath sits a clean formula — 20 grams of protein, 80 calories, zero sugar, lactose-free, grass-fed European whey, third-party tested for purity — and it's the pick we point to when someone tells us they hate protein powder.

Mixing holds up its end. It dissolves cleanly in a shaker with no foam worth mentioning and no chalky residue, and the texture stays thin, closer to a lightly brewed tea than to anything with body. Left over ice it doesn't thicken as it sits, which is not true of every pick here.

Eighteen servings go faster than you expect at one a day, and GRAMMS is a younger name than Isopure, so you're buying on flavour rather than shelf history. What that flavour buys is a drink you don't get tired of, which is the hardest thing to find in this category and the reason it stays near the top of this list.

Twenty-five grams of protein per scoop is the number that settled this one for us. No other clear whey here gets past 22 and most sit at 20, so if the drink is closing a real daily protein gap rather than rinsing a workout, GHOST gets you there in fewer scoops — with zero fat, zero sugar, and a label that prints every ingredient's dose instead of hiding behind a blend.

It also mixes like it means it. Thirty seconds of hard shaking and a minute or two of standing gets you a translucent drink rather than the cloudy, grainy thing clear protein often turns into. Rush it and you're drinking foam, which is the tax on this whole category rather than a fault of this particular tub.

Mango Colada drinks sweet and tart at once, and dilution is the answer: a bigger shaker and 16 to 20 ounces of cold water instead of a short, strong pour smooths out both edges. We came to like it best over a full bottle of ice and water, where it reads as a fruit drink rather than a concentrate.

Where it lands: this is the one we reach for when the drink is doing real work in a day's macros. If you just want something cold and fruity after training, a cheaper tub will do fine. If you're counting grams, the extra protein is the entire reason to pick it.

Informed Sport certification is the reason to start here. It's the only pick in this group that carries it, and it means batches are screened for banned substances — the difference between a protein you can use and one you can't if your sport tests. Under that sits 20 grams of protein, 2.1 grams of leucine, 100 calories, and a short ingredient list with no artificial flavours or sweeteners.

We expected the pineapple to taste like candy and got something closer to a piña colada instead — sweet, but with actual fruit behind it and none of the artificial-sweetener aftertaste that gives clear protein away. The foam is the catch: shake it hard and it builds a head you need to let fall, and skipping that minute leaves clumps in the bottom of the bottle.

At 20 servings a tub it costs roughly what the mid-tier picks here do, and the 20-gram dose is 5 grams short of our top pick. For a tested athlete that's an easy trade to make. For someone chasing maximum protein per drink, it isn't.

Thirty servings in a single tub is more than anything else here, and at one drink a day that's a month of protein before you have to think about reordering. Each scoop carries 20 grams, 90 calories, zero sugar and zero lactose.

What sold us is how little it asks of you. It dissolves completely with a few shakes of an ordinary bottle — no blender, no wire ball, no clumps at the bottom — and it stays clear instead of hazing up. Tropical Crush is bright rather than syrupy, and the texture is thin all the way down, which is the entire promise of a clear whey.

LYALOR is a smaller name than the ones on gym shelves, and this listing carries a single flavour, so variety hunters will be shopping elsewhere between tubs. If dairy protein has a history of sitting heavily on you, start with one serving a day and see how it goes.

Scoop, shake, drink, done. Orgain's clear whey went into cold water more readily than almost anything else we mixed — no clumps welded to the bottom of the bottle, no gritty film down the sides, no waiting on a foam cap to drop. Given how much of the frustration in this category is really a mixing problem, that's not a small thing.

The formula is just as straightforward: 22 grams of protein, zero sugar, 100 calories, 18 servings. It's the second-highest dose on this page, and it's built for lactose intolerance — the brand is explicit that it isn't suitable for galactosemia, so read that line if it applies to you.

The dissolve is the reason to buy it, and the 3-gram gap to our top pick is the reason not to. If you drink yours in the first ten minutes of the morning and want it over with, the gap won't matter. If you're stacking every gram toward a daily target, it might.

Monk fruit rather than sucralose is the first thing to know about Oath. The Frosty Lemonade is sweetened with fruit, carries no added sugar, and doesn't leave the artificial edge that makes people quit clear protein in week three. Each 20-gram serving is grass-fed whey isolate, and a bag holds 18.

As lemonade it's convincing: tart, cold and light enough to drink fast, which is what you want when a creamy shake feels like homework. Of the fruit flavours here, it's the one that reads most like a drink you'd buy for pleasure rather than for macros.

The weakness is dissolving. We found it needs a splash of warm water to start and cold to top up, or it clumps and floats, and it froths, so shake it, wait, then drink. The bag is also fussier to scoop from than a tub once you get near the bottom.

Where it fits: this is a summer drink and a palate cleanser, not the tub you grind through in February. It isn't the highest protein per scoop here — our top pick and Orgain both beat it — but on a hot afternoon it's the easiest 20 grams on this page to finish.

Hydrolyzed whey isolate is what lets a protein drink go translucent instead of milky — the protein is partly broken down before it ever meets water — and Myprotein builds its clear whey on exactly that. It's also the cheapest way into the category here, which makes the two facts hard to separate.

The trade shows up in the shaker. This one clumps more than the easy-mixing picks and foams if you go at it hard, so cold water, a wire ball and a minute of settling are part of the routine rather than optional. Get past that and Tropical Dragonfruit is tart rather than candy-sweet, which is what makes it drinkable on an ordinary Tuesday.

Fifteen servings is the smallest tub here, and that's the point. We think of it as the sampler: it's how you find out whether you want to drink your protein rather than chew it, before committing to a 30-serving tub of a flavour you might not love. Per drink it lands among the cheaper picks, though not the very cheapest.

You've seen this tub. Isopure is the clear whey that turns up in every gym bag and grocery aisle, and its formula is the shortest in this group: five ingredients, no artificial sweeteners, no artificial flavours, no added sugar, 20 grams of protein a serving.

That short list is a real reason to choose it over a sweeter competitor if you read labels and don't want a sweetener cocktail in your water. Tropical Punch is the flavour most people meet first, and it's a love-it-or-not proposition — bright and fruity to some, bitter and medicine-like to others.

We found mixing the fussiest part: it clumps if you rush it, so a shaker with a wire ball does better than a bottle and a spoon. What you get in return is a formula you can read in one breath and a brand you can restock anywhere without planning ahead.

Where it fits: this is the restock-at-the-store option, and the five-ingredient list is a genuine reason to pick it over a sweeter brand. Just don't judge clear protein by this one alone — the mixing here isn't the category at its best.