The Best Protein Waters in 2026, According to Our Editors and RDs Who Personally Tested Every Sip

Unlike other saturated markets in the supplement industry (including protein powders and protein shakes), the protein water category is relatively niche, which means there aren’t all that many options available. And then even, among those relatively few products, not all protein waters are created equal. Just because they contain protein doesn’t necessarily mean they are healthy overall. So as an RD, I wanted to make sure that I could find the healthiest and best ones. This meant diving into clinical studies, consulting with nutrition experts, carefully analyzing ingredient lists, and even taste-testing the options myself.

• Best Protein Water for Athletes: Ready Protein Water
• Best Tasting Protein Water: PWR-Lift Whey Protein Water
• Best Budget: Protein 2O Protein Hydration Drink
• Best for Weight Loss: WonderSlim Protein Fruit Drink
• Best Protein Water with Organic Ingredients: TATU Protein Water

We focused this article mostly on ready-to-drink protein waters (with a couple powder options). But there were other clear protein powders we tried with refreshing, fruity flavors we think you’ll enjoy that didn’t quite make it on our top list. You can’t go wrong trying the products below, as well.

Oath Clear Protein Powder did well during testing for its flavor as well as the fact that it has less than 1 g of sugar. Swanson also found that this mixed well and was easy to drink. “This blended perfectly,” she said. “I was able to use this in a hand shake bottle and also a handheld mixer. This did not take a lot of time to mix or blend and there were no clumps and no residue.”

Swanson had good things to say about every flavor she tried, but she said that the Kiwi Strawberry was her favorite.

Seeq Clear Protein Powder offers 22 g protein per serving. And even though this is includes whey protein isolate, it contains 0 g lactose, so it may be safer for those with lactose intolerance. It has 0 g sugar and comes in flavors like Watermelon Wave, Blue Razz Freeze, Fruit Punch, Juicy Peach, Mango Pineapple, and Strawberry Lemonade. Swanson said that this mixes up into a very sweet protein drink, but that she didn’t find it too sweet. However, she noted a chalky flavor with this one.

Clean Simple Eats also makes a mixable clear protein powder, and we tried the Clean Simple Eats Clear Protein Powder Sour Candy Watermelon flavor. Writer Caitlin Beale, RDN, said that she found this fun because she loves sour candy, however, she found it overpoweringly sweet and tough to finish. But those who love a sweet drink shouldn’t miss the other flavors, like Blue Bahama, Pineapple Passion, and Pink Burst.

We took a thorough and careful approach to testing the best protein waters on the market. I examined the current research and consulted with five nutrition experts to help evaluate the best protein waters based on several key factors. One of those factors was the nutritional profile of each product, which focused on amount of protein per serving, amount of sugar per serving, and if it included essential vitamins and minerals.

We employed the help of six other testers besides myself to test out protein waters for flavor, texture, satiety, and mixability (for powders). We prioritized products with high-quality protein sources like whey, those that had a pleasant taste and texture, and protein waters that adhered to quality standards and third-party testing for purity and contamination. We also considered factors like price per serving against nutritional value to provide recommendations that are not only effective, but also affordable.

Finally, we eliminated protein waters that made claims that didn’t match up with their ingredient lists. For example, some products claimed to have no artificial sweeteners but actually contained erythritol, a sugar alcohol. It’s important to note that since very few protein waters are third-party tested, it’s difficult to confidently recommend them because there’s no independent verification of their safety, quality, or ingredient accuracy.

When selecting a protein water, it’s essential to consider factors that align with your dietary needs, lifestyle, and fitness goals. Not all protein waters are created equal, so paying attention to key features can help you pick a product that delivers the right balance of protein, taste, and convenience. Here are some things to keep in mind:

• Protein Content per Serving: “When selecting a protein water for recovery,” notes Chloe Giraldi, RD, LDN, owner of NutriTrain in Boston, Massachusetts. “Aim for products with at least 10 to 20 g of protein per serving. This allows you to pair the water with a source of carbohydrates and/or a protein option like jerky, trail mix, or roasted chickpeas for convenient, on-the-go post-workout recovery and hydration,” she explains.
• Sweeteners: “When looking for a protein water,” Rebecca Laurel-Hill, RDN, recommends “choosing products with low or no added sugars. “If sweetened, look for natural sweeteners like stevia or monk fruit,” she adds. Check both the sugar content and the type of sweeteners used. Consider how these align with your dietary preferences and how your body tolerates them. Try to avoid protein waters with unnecessary additives that may compromise the health benefits. Giraldi suggests avoiding “products containing artificial sweeteners like aspartame, sucralose, saccharin, neotame, or acesulfame potassium as they may cause gastrointestinal distress, which can be an added challenge for athletes to manage.”
• Type of Protein: Whey, pea, or collagen protein can affect digestibility, taste, and nutritional benefits. Ensure your protein of choice aligns with your dietary lifestyle and nutritional goals.
• Flavor and Taste: You’ll be drinking it regularly, so choose flavors you enjoy.
• Added Ingredients: Consider electrolytes, vitamins, or other additives, such as BCAAs, for both hydration and nutritional benefits.
• Serving Size and Packaging: Single-serve bottles are convenient for on-the-go use, while larger bottles may be more cost-effective.
• Price and Value: Compare the cost per serving to ensure it fits your budget.
• Dietary Restrictions: Make sure it aligns with any allergies or dietary preferences, such as vegan or dairy-free.

However, it’s important not to rely solely on protein water versus actual food. “In a head-to-head comparison, protein waters will always come second to fueling and refueling with whole foods,” says Meridan Zerner RDN, CSSD, LD, of Cooper Aerobics in Dallas, Texas. “Protein water can’t provide all of the potential nutrients and additional health benefits that come from actual whole foods.”

Protein water can be especially beneficial for people with higher protein needs or those looking for a convenient, low-calorie way to increase their protein intake. Athletes and fitness enthusiasts may find protein water helpful in post-workout recovery, especially if they prefer a lighter option than a traditional protein shake. It can also be a good fit for people with busy schedules who struggle to get enough protein from meals alone or for those on specialized diets, such as low-carb or high-protein diets, or those who want a portable alternative to traditional sports drinks. Additionally, individuals recovering from illness or with reduced appetites may use protein water to help meet their nutritional needs without feeling overly full.