A 5 star protein drink
"A 5 star protein drink right here."










A refreshing & light way to get protein, without compromise.
Each serving provides:
Made with natural flavours and whey protein isolate. From the World’s #1 Sport Nutrition brand*, relied on for performance.
Shake well and enjoy as part of a balanced diet and a healthy lifestyle, best served chilled.
*Euromonitor International Limited; Consumer Health 2025 Edition, Sports Nutrition category, %retail value shares, 2024 data.
Tax included.


Alice Tai, Paralympic champion and one of Britain’s most successful para swimmers, uses Protein Water as part of her diet. It plays an important role in helping support her recovery and preparation for competition.
Overall rating: 4.9375 / 5 from 48 reviews.
Review topics: [alternative, taste, protein, solution, option, drink, water].
"A 5 star protein drink right here."
"Not a nice taste"
"Felt a bit strange at first as I was expecting it to be like water, but once I got use to it it’s great. Quick convenient way to get in some extra protein, especially when on the go!"
"Love the taste"
"Really good piece of innovation. It doesn’t feel heavy like regular protein shakes, and there’s no weird aftertaste. Easy way to get protein in without even thinking about it and can't wait for the summer to add some ice to it! Definitely recommend."
"Very refreshing drink! Be an ideal drink for the summer! Tastes good as well"
"I’m seriously impressed with Optimum Nutrition Protein Water. It’s the perfect option when you want extra protein without the heaviness of a traditional shake. The taste is clean, light, and refreshing—not chalky or overly sweet—and it actually feels like drinking flavored water instead of a protein supplement. It mixes easily, goes down smooth, and is great post-workout or anytime I want a quick protein boost without extra calories or sugar. I also love how easy it is on the stomach compared to creamy protein drinks. If you’re looking for a refreshing, convenient, and effective way to increase your protein intake, this is absolutely a five-star choice. 💧💪"
"Good taste"
"I have tried a variety of protein water, they all do the job, but most of the time they are either too bitter, too sweet, or they literally taste of aspartame. This one is actually perfect!! Stocked up for my whole weightlifting team!!!!"
"When you need that protein fix on the go when busy, this is perfect as it feels like I’m drinking water, but also hitting the daily protein goal on the go."