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The 8 Best liquid protein for adults of 2025

Are you trying to find liquid protein for adults among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling liquid protein for adults on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 19 hours of research and did 16 liquid protein for adults tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best liquid protein for adults you can buy today

SaleNo. 1
Medline ENT697 Active (Critical Care) Liquid Protein, Sugar-Free Citrus Berry, 30 oz., 21 g of Protein, 1 Bottle
  • Ready-to-use liquid form for oral or tube feeding administration
  • Dual protein source of hydrolyzed collagen and whey protein
  • Compares to ProStat and ProSource Liquid protein. Not a sole source of nutrition
  • Shelf-stable, refrigeration not recommended
No. 2
Optimum Nutrition Gold Standard Protein Shake, 24g Protein, Ready to Drink Protein Drinks, Chocolate, 11 Fl Oz, 12 Count (Pack of 1) (Packaging May Vary)
  • OPTIMUM NUTRITION GOLD STANDARD PROTEIN SHAKE - Offers 24 grams of premium protein in two delicious-tasting flavors – Chocolate and Vanilla
  • GOLD STANDARD PROTEIN SHAKE - Tastes great while supporting muscle building* and recovery; 1G of sugar and zero added sugars; 24 vitamins and minerals, plus vitamins A, C, D, E and zinc, support a healthy immune system
  • VITAMINS A,C, AND E - For antioxidant support and B vitamins to help convert food to cellular energy/support cellular energy metabolism; 9 essential amino acids
  • FROM THE MOST TRUSTED BRAND IN PROTEIN - Optimum Nutrition; Calcium to support healthy teeth and bones; Helps fill nutrient gaps and reach daily protein goals
  • Optimum Nutrition is the World's #1 Sports Nutrition Brand. Banned substance tested - Highest quality control measures so you feel comfortable and safe consuming the product
No. 3
Medline Active Liquid Protein, Citrus Berry Punch, 30-oz, 15-g Protein (Pack of 4)
  • Ready-to-use medical food for oral or tube feeding provides a concentrated source of protein for people with increased protein needs
  • Dual protein source of hydrolyzed collagen and whey protein provides 15 grams of protein per one ounce serving
  • Citrus Berry Punch flavor liquid protein is lactose-free, gluten-free and does not contain glycerin
  • Compare to ProStat and ProSource Liquid protein
  • Shelf-stable, refrigeration not recommended
SaleNo. 4
Benecalorie Calorie and Protein Enhancer - Unflavored (330 Calories, 7g Protein) - 1.5 fl oz Cups, 24 Pack
  • FOR BEST RESULTS: Shake vigorously before opening.
  • UNFLAVORED: Neutral flavor allows for flexible serving options.
  • EASY TO MIX WITH FOOD & DRINK: This calorie & protein supplement mixes with your favorite drinks, protein shakes, soft foods, or nutritional supplements.
  • APPROPRIATE FOR THESE DIETS: This product is suitable for gluten-free, low-residue, fluid-restricted, cholesterol-free, kosher, & lactose intolerance diets (not suitable for galactosemia).
  • NUTRITIONAL & DIGESTIVE NEEDS: Nestle carries multiple adult & pediatric specialized GI & nutrition formulas to help meet the needs of those with GI dysfunction, illness, or increased energy.
No. 5
Designer Wellness Protein Smoothie, Real Fruit, 12g Protein, Low Carb, Zero Added Sugar, Gluten-Free, Non-GMO, No Artificial Colors or Flavors, Mix Variety, 12 Count
  • 2X PROTEIN VS SUGAR: Low carb, 12g whey protein isolate and naturally sweetened with real fruit blends
  • WHAT TO EXPECT: Creamy & delicious yogurt-like taste & texture; on occasion, there may be some variability in texture – to learn more, please visit our Q&A section.
  • HEALTHY ON-TH-GO OPTION: You can leave your protein powder at home and sugar loaded drinks behind with this healthy fruit & protein smoothie pouch for adults, kids, and all occasions; no refrigeration is needed
  • BALANCED NUTRIENTS: Includes mct oil (healthy fats) for balanced nutrition and quick-burning sustained energy
  • HIGH-QUALITY INGREDIENTS: Gluten-free, soy-free, and non-gmo ingredients
  • CLEAN NUTRITION: Zero added sugar, no artificial sweeteners, no artificial flavors or colors
  • A PERFECT PROTEIN SNACK: A smooth consistency that tastes great; a perfect alternative to ready-to-drink protein drinks and protein bars
  • PALEO & KETO DIET FRIENDLY: Designer Smoothies are made with paleo-friendly pure whey protein isolate free of gluten, hormones, & antibiotics; plus mct oil to help support a ketogenic lifestyle
No. 6
Pro-Stat Concentrated Liquid Protein Medical Food - Grape Flavor, 30 Fl Oz Bottle
  • CONCENTRATED LIQUID PROTEIN: For the dietary management of wounds and other conditions requiring increased protein in low volume.
  • MEDICAL FOOD: Use under medical supervision.
  • READY-TO-DRINK: 1 fl oz provides 15 g of hydrolyzed collagen protein and 100 calories.
  • Mix with any hot or cold food or beverage.
  • Lactose Free, Gluten Free, Soy Free and Certified Kosher
No. 7
Premier Protein Liquid Protein Shake, Caramel, 30g Protein, 1g Sugar, 24 Vitamins & Minerals, Nutrients to Support Immune Health 11.5 fl oz Bottle (12 Pack)
  • Like the taste of a sundae with dripping caramel over ice cream, indulge in this caramel flavored protein shake; Winner of American Masters of Taste Gold Medal for SUPERIOR TASTING ready-to-drink protein beverages.
  • 30g of protein to help curb your hunger, as a mid-day snack or for post workout recovery; includes all essential amino acids
  • 24 Vitamins and Minerals: Support a healthy immune system as part of a healthy diet and lifestyle (Antioxidants Vitamins C and E plus Zinc), 50 percent daily value of calcium and 30 percent daily value of Vitamin D to help maintain healthy bones
  • Guilt free indulgence: 1g Sugar, 4g Carbs, 160 Calories and Low Fat; Gluten Free, Keto and Bariatric Friendly, Kosher
  • Try all eleven (11) delicious smooth and creamy flavors: Chocolate, Vanilla, Caramel, Cookies & Cream, Cafe Latte, Strawberries & Cream, Peaches & Cream, Bananas & Cream, Cinnamon Roll, Chocolate Peanut Butter and Cake Batter Delight
No. 8
LiquaCel Concentrated Liquid Protein Packets Variety Packs (25 Packets X 30ML)
  • 16 grams of protein and 2.5 grams of arginine in 1 oz serving
  • Ready-to-drink or mix with a preferred beverage
  • Sugar and gluten free
  • Contains all essential and nonessential amino acids
  • Low potassium and phosphorus
No. 9
Proteinex Medical Grade Liquid Hydrolyzed Protein Max Strength - Supports Wound Healing and Doctor Recommended- No Carbs, Zero Sugars & Ready to Drink Liquid Protein Drink (Watermelon, 30 Fl oz)
  • It's Collagen Not Whey: Hydrolyzed liquid collagen has the highest absorption rate compared to tablets, powders and capsules making it more efficient; Our protein drink contains type I and II Collagen that are one of the most important nutrients needed to ensure the health and vitality of your skin, hair, tendon, cartilage, bones, and joints
  • OUR PROTEIN COMES FROM COLLAGEN NOT WHEY: Hydrolyzed liquid collagen has the highest absorption rate compared to tablets, powders and capsules making it more efficient; Collagen is one of the most important nutrients needed to to ensure the health and vitality of your skin, hair, tendon, cartilage, bones, and joints
  • NO PROPRIETARY BLENDS, KETO & PALEO FRIENDLY, DAIRY, GLUTEN & GMO FREE, CONTAINS TYPE I & III COLLAGEN
  • HOW TO TAKE: Great tasting flavors ready to mix with food, water, juice, smoothies, or your favorite beverage; You can also drink it as is – no mixing required! Also ideal for tube feeding as it does not club feeding tubes
No. 10
Centrum Liquid Multivitamin for Adults, Multivitamin/Multimineral Supplement with B Vitamins and Antioxidants, Citrus Flavor - 8 Fl Oz
  • One 8 fl oz bottle of citrus-flavored Centrum Liquid Multivitamin for Adults, Multivitamin/Multimineral Supplement with B Vitamins and Antioxidants
  • Liquid multivitamin for men and women, packed with 17 essential micronutrients to help fill nutritional gaps and promote full body wellness
  • Antioxidant and zinc supplement that promotes a healthy immune response
  • Liquid multivitamin iron supplement with vitamins B, C, E, beta-carotene and zinc
  • Available in easy-to-take liquid form that is perfect for people who have difficulty swallowing tablets
  • With nutrients and antioxidants supplements to maintain whole body health with a tangy citrus flavor
  • Take one tablespoon daily with food
No. 11
LiquaCel Peach Mango Liquid Protein, Sugar & Gluten Free, 32 oz Bottle, Hydrolyzed Collagen, 16g Protein per Serving, Ideal for Clear Fluid Diets and Lactose Intolerant Individuals
  • EASY TO MIX LIQUID PROTEIN: LiquaCel offers a convenient and delicious way to boost your protein intake with a peach mango flavor. This liquid protein mix is perfect for adding to your favorite beverages, ensuring a smooth blend every time.
  • HIGH PROTEIN CONTENT: Each serving of LiquaCel contains 16g of hydrolyzed collagen protein and 2.5g of arginine, making it an excellent source of essential nutrients for muscle recovery and overall health.
  • SUGAR AND GLUTEN FREE: LiquaCel is formulated to be both sugar-free and gluten-free, making it suitable for those with dietary restrictions. It's also ideal for clear fluid diets and safe for lactose intolerant patients.
  • VERSATILE AND CONVENIENT: Whether you're looking to enhance your smoothies, juices, or water, LiquaCel mixes effortlessly to provide a nutritious protein boost. It's perfect for busy chefs and culinary enthusiasts.
  • BULK PACKAGING FOR CHEFS: Available in a 32 oz bottle, LiquaCel is perfect for chefs who need a reliable and high-quality protein supplement in bulk. Keep your kitchen stocked with this versatile and delicious protein mix.
No. 12
Global Health Products LiquaCel Liquid Protein 32 Ounces Grape
  • The package dimension of the product is 7.9cmL x 8.1cmW x 21.3cmH
  • The package weight of the product is 2.7 Pound
No. 13
ProT GOLD Berry Sugar Free Liquid Protein Shot - 16oz Anti Aging. Proven to Boost Immunity. Formula Trusted by 4,000+ Medical Facilities for Complete Protein Nutrition and Proven 2X Faster Healing
  • LIQUID COLLAGEN PROTEIN SHOT: ProT Gold is a COMPLETE Protein with 22 amino acids unlike other hydrolyzed collagen proteins. It is fortified with Arginine, Taurine, Tryptophan, Histidine, Methionine, Glutamine, and Cysteine. Each bottle has 16 servings and 17g of protein per each 1 fl oz serving
  • GLUTEN FREE AND SUGAR FREE: Our berry flavored liquid collagen protein has 0g of carbohydrates, and is 100% gluten free, sugar free, fat free, soy free, and lactose free. Contains NO banned substances and no GMO, and no artificial flavors
  • 2G ARGININE: Fortified with 2 x grams of Arginine per serving for accelerated wound improvement. To help support recovering wounds 2x faster. Available in a berry flavored pouch or a berry flavored bottle
  • 16 SERVING BOTTLES: Ready to drink, with no mixing required. Keep these collagen bottles at home for any time you need a quick nourishing protein snack or fuel for pre-workout, during, or post-workout
  • DIGEST FASTER UNDER 15 MINUTES: ProT Gold’s nano hydrolyzed collagen protein for rapid absorption is digested completely within 15 minutes. Perfect for post workout muscle support, and wound support
No. 14
ProSource NoCarb Liquid Protein, Neutral Flavor, 30 Ounce Bottle - 1/Each
  • BRAND - ProSource NoCarb
  • Serving Size 30 fl oz
  • Calories per Serving - 60
  • Calorie Density per Serving - 2.000
  • FLAVOR - Neutral (Formerly Unflavored)
No. 15
Functional Formularies Liquid Hope Peptide High Protein Organic Tube Feeding Formula and Nutritional Meal Replacement Supplement, 12 Oz Pouch, Pack of 24
  • Formula Meal Replacement: Organic, plant-based, whole-food peptide formula packed with the power of berries. There are 2 servings of fruits vegetables and over 100 berries in every pouch that is rich in polyphenols
  • Functional Ingredients: Contains organic parsley, rich in silica, and provides 31g of complete protein with pea peptide for improved digestion. This nutritious blend is high in calcium, potassium, vitamin B12, vitamin D, and K. Crafted with the utmost quality, it is certified organic, plant-based, and free from artificial additives or added sugar.
  • Nourishment to thrive: This contains 23g of complete protein per pouch with hydrolyzed pea protein for enhanced digestion and maximum nourishment. Designed for adults using feeding tubes. Also, perfect for tube transition and oral!
  • Low Hypersensitivity: Tree nut-free, dairy-free, soy-free, corn-free, and no added sugar. We strive to produce a low-hypersensitivity formula
  • Usage Considerations: Designed to have a shelf-life of up to two years from the date cased. Store at an ambient temperature of 60 to 70 degrees Fahrenheit
No. 17
Protein2o 20g Whey Protein Isolate Hydration Drink, 350mg of Electrolytes, Vitamins B5 & B6, Sugar Free, Strawberry Watermelon, 16.9 oz Bottle (12 Count)
  • REPAIR: 20g of Whey Protein Isolate For Optimal Post-Workout Recovery
  • REPLACE: 350mg of Electrolytes For Hydration
  • RESTORE: 100% DV of B5 & B6 Vitamins
  • NO ARTIFICIAL SWEETENERS: which makes each bottle low carb and keto friendly. With only 3g net carbs, 90 calories, and 0g of sugar. Flavors that are certified OU-D kosher, gluten free, 0g lactose, no artificial flavors, and BPA-free
  • Product packaging may vary as we transition through a rebrand. You may receive the old version, but rest assured, the new product is on its way!
No. 18
Spylt High Protein Strawberry Milk with 60mg Caffeine & 20g Protein - Ready to Drink, Sugar Free, Lactose Free Milk, Perfect for Workout Recovery & Afternoon Pick Me Up Protein Shake - 12 Count
  • CAFFEINATED PROTEIN BOOST: Strawberry milk with a giant caffeinated kick in the pants. With 60mg of liquid caffeine, and 20g of protein milk, SPYLT is your caffeinated compadre and AFTERNOON PICK ME UP!
  • POST WORKOUT PICK-ME-UP: Chug up first thing in the morning, post-workout, or afternoons when those eyelids get heavy. This high protein shake is keto friendly, low calorie, and perfect for sports nutrition and building healthy muscle.
  • FREAKING DELICIOUS: Rich, creamy and smooth, SPYLT has ZERO sugar, ZERO lactose, and is SHELF STABLE. How can no sugar strawberry milk taste so good? Science. Adults, teens, and athletes will love this freaking delicious protein shake!
  • CHILL IT, CRACK IT, CHUG IT: This caffeinated, high protein, lactose free milk is ready to drink. Chill it, crack it open, and chug it down! Who doesn’t love strawberry milk? If you don’t love it, then…let's not be ridiculous, you will love it!
  • STAWBERRY MILK RUNS IN OUR VEINS: Wait not literally, that wouldn’t work. But yeah we love strawberry milk. We grew up on this stuff, we are no longer 12, but haven’t lost our taste buds. That's why we formulated an environmentally friendly, freaking delicious strawberry milk that's packed with a wide array of nutrients including vitamins, minerals, protein, healthy fats, and antioxidants.
No. 19
LiquaCel Concentrated Liquid Protein, Sugar-Free Unflavored Flavor, 32oz Bottle – Collagen Whey Arginine
  • LiquaCel Unflavored Flavor is a superb tasting source of protein. It is extremely easy to mix into your favorite beverages or can be taken straight up!
  • Liquacel Unflavored Contains 16 grams of protein and 2.5 grams of arginine per 1 oz. Contains all essential and nonessential amino acids
  • LiquaCel is a perfect alternative for large volume supplements that are difficult to consume. (Nectar consistency) moderately thick. Low potassium and phosphorus. Osmolality approximately 270-300.
  • Liquacel is sugar and gluten free. Great tasting hydrolyzed collagen liquid protein 16g of protein and 2.5g of arginine in every serving (1 oz). Available in 32 oz bottles and convenient 1oz on the go packets.
SaleNo. 20
BOOST Original Nutritional Drink, Very Vanilla, 8 Fl Oz (Pack of 24)
  • Boost Original Nutritional Shake: Boost Original provides 10 gram protein, 240 calories, and 27 vitamins and minerals to help you get complete and balanced nutrition; Perfect as a mini meal or snack
  • Energy Metabolism: BOOST Original has 240 nutrient rich calories plus 8 B Vitamins to support energy metabolism; Chocolate, strawberry, and vanilla flavors make it an easy and delicious way to add nutrition to a balanced diet
  • Nutritional Support: BOOST Nutritional drinks give your body protein, vitamins, and calories to help support normal energy; Enhance your nutrition with protein shakes and drinks in chocolate, vanilla, and fruit flavors
  • Boost Nutritional Drinks: BOOST Drinks have nutrition you need and taste you love; BOOST Original Complete Nutritional Drinks have no artificial colors or sweeteners and are gluten free
  • Boost Family Of Nutritional Shakes: Whether you want extra protein, less sugars, more calories, fewer calories, or simply great nutrition for everyday living, there’s a BOOST Nutritional Shake that fits your needs

How to choose a good liquid protein for adults

Does the idea of finding a fantastic liquid protein for adults make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in liquid protein for adults. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top liquid protein for adults products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top liquid protein for adults on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top liquid protein for adults brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top liquid protein for adults based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the liquid protein for adults were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good liquid protein for adults, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your liquid protein for adults.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting liquid protein for adults for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our liquid protein for adults. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what liquid protein for adults should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on liquid protein for adults.