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Proteinex P18 Liquid Protein, Lemon Lime (30fl oz)

Proteinex P18 Liquid Protein, Lemon Lime (30fl oz)
Item #: PROTEINEX1830

Price: $28.95

Availability: In stock

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Proteinex P18 Liquid Protein, Lemon Lime (30fl oz)

Price: $28.95

In stock


  • Provides the highest concentration of protein (18 grams) in a small 1 oz. dose (2 tablespoons).
  • May be used by bariatric patients with food and liquid intake restrictions.
  • Easily absorbed.
  • Ready to use; no mixing required.
  • Protein source: hydrolyzed protein.
  • Low Carb - 0g Net Carbs*
  • Promotes healing of wounds or repair of tissues.
  • Helps to prevent tissue breakdown.
  • Does not contain fat, sugar, phosphorus or carbohydrates.
  • Great taste
  • Long shelf life.

*g Net Carbs = Total Carbohydrates - Fiber - Sugar Alcohols

Proteinex-18 Liquid is a predigested high-protein (18 grams per oz.) source, which means that the product is already broken down to its amino acid portions that the body can easily absorb and utilize. Proteinex-18 provides 18 grams of highly absorbable protein per ounce. Proteinex-18 is ready to use, no mixing is required, or you can mix with your favorite beverage or with foods such as apple sauce or Jell-O.


Take two tablespoons (1oz) daily or as recommend by your physician.

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Customer Reviews

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23 Customer Reviews

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Tangy and tart but very good source of protein
by Cynthia on 4/24/2013
Mixed with Poweraide and it was even better
Proteinex Liquid Protein Drinks
by Cindy on 4/6/2013
I love these products! They taste really good in tea and fruit drinks and they really provide the protein I need daily. I wouldn't drink liquids without them. The lemon lime is my favorite but the apple is good as well.
no diet
by janet on 10/2/2012
I bought this after hearing of "nodiet.com" on the radio... the price they were asking per serving (3grams protein every night) was astronomical. I figured I would need only one tsp Proteinex 18 per night to get my 3 grams. this 30 oz bottle would last 180 servings. So both my husband and I started taking it. I wish I could say it worked for me as well as my husband. It has been only 1 month and he lost 11 lbs. While I have maybe lost 1 or 2 pounds. (still going in the right direction.) I do have more energy and wake refreshed. I will not stop taking this. Oh by the way my husband is diabetic and his sugar levels have been great every morning... Good stuff. Taste isn't so bad if you don't water it down too much.
Best tasting liquid protein ever.
by MICHELE on 8/31/2012
I love this liquid protein. I ordered the small bottle of grape flavor just to test it. I love it so much that I came back to order the 30 oz. The texture is the best..not thick like other liquid proteins. There are times when I think it is too sweet and other times it craves my taste for sweets. I am hooked on this brand and will always return.Grape is my favorite flavor, but i am willing to try the other flavors soon.
You Get Used To It
by EmmBee on 8/30/2012
No liquid protein tastes wonderful, but this is definitely better than most I have tasted. Over time, I have become accustomed to the taste. The amount of protein per ounce and low calories make it great for Bandsters.
Great taste, great for the money
by Victoria on 11/28/2011
I have been with MRC for 3 months now and have lost 20 lbs. A big part of their plan is liquid protein supplements. After finding Proteinex-18, I am saving approximately 40% in cost. If you mix 1 oz with water or even add a sugar free powder drink mix to it, the flavor is great either way. I will continue to purchase this product and recommend to my friends and family!
Just what I was looking for.
by msmary on 11/7/2011
I really wanted a product to give me additional protein without a lot of calories. I mix it in my water bottle and take it to my workout!
Proteinex-18 liquid protein
by vicki on 4/22/2011
Taste great, after I had bariatric surgery I could not get enough protein, this makes it so easy (Updated on 4/23/2011.)
It is just what I needed
by Andy on 2/11/2011
My first time trying such a product. I have the LemonLime flavor. As far as taste goes it is okay. But it is a thick substance that does need to be mixed well with your choice of liquid. And for me personally it has to be sipped slowly. My Lap band is set pretty tight and the viscosity of the drink (even when mixed with water) when it hits my pouch sometimes feels like it wants to come back out. Don't get me wrong it is nothing thick like cooking oil but it has some weight to it. I put up with this slight inconvenience because of some skin wound issues I have, and since taking this product the extra protein has cleared up those problems. And my lab reports are great. So for me it is great.
Not that bad of a taste
by nicole grady on 10/8/2008
Doesn't really taste THAT bad. It's kinda sour, like Sour Patch Kid candy.

Proteinex 18
by Beverly on 6/29/2008
You have to follow the review from another user for another liquid protein. All liquid protein is nasty! None is going taste good, but if you follow her instructions, you can get this down and be ok. Hold your nose and shoot the 1oz. down and then use something else to rinse your mouth with several times while still holding your nose and then drink or eat something that has a lot of flavor and then let go of your nose.

Good Price
by Miriam Maldonado on 6/3/2008
Please tell me if the free shipping includes Puerto Rico. The price in PR is very high and you have a good price. Thanks

Easy way to get protein - and no sugar!
by Cara on 12/17/2013
I've used Proteinex off and on for the last ten years. The doctor recommended it after I had gastric bypass surgery. I always feel better when I use it. I have more energy and my body heals more quickly for illness or injury. I am so grateful there is a product like Proteinex that is pure protein and doesn't have a bunch of chemicals and additives and sugars.
Highly Recommend
by MAVIS on 10/9/2014
this product taste great and adds more energy for me through out the day
Excellent Product!! Best Protein in the market
by Irvis on 2/14/2015
I started using the proteinex in the lemon flavor. Is very strong but is better than all the other ones I have tried. I started using it for an invitro process and kept pn using it because of the benefits and support my weight loss.
Good mixed in water for sipping
by Annie on 9/20/2019
Very smooth with minimal after taste
I'm so glad I found this product
by Danna on 5/31/2011
I struggle with fatigue on a pretty substantial scale, and tried this product to boost my energy level. I've been using it twice a day as a supplement to a low carb diet and feel better than I have in years, and it's been less than a week since I started. It is pretty thick and syrupy, but tastes pretty good. At only 1 ounce per serving, it is not a big deal. I highly recommend it.
by Susan on 12/6/2014
I love the energy I get when using this but the smell and flavor need some help. Hold your nose.
by tsard on 3/11/2011
Product provides a significant amount of protein and low in calories but I find it a little hard to swallow. It is extremely thick and maybe a little to syrupy. Thank goodness it's only one ounce per serving. The Lemon-Lime is better then the Cherry.
by on 8/30/2012
Both the grape and lemon lime made me gag - did not taste good at all - ewwww.
Awful taste
by m.frasier on 8/30/2012
This stuff taste awful. It caused me to become very ill.

Proteinex-18 Liquid Predigested Protein
by Roe on 7/24/2012
This is the worst tasting product that I have purchased from this site. Bad after taste, if you can get the teaspoon even down to where it will stay there.

by Lisa on 2/14/2012
I bought a bottle of Grape and a Lemon-Lime of this predigested protein based on a high review. I forced myself to try both flavors several times and I just don't see how anyone can drink this stuff? It makes me gag. I am a frequent user of the wonderslim and bariwise products and will continue using them but I am extremely annoyed about the money I spent on these two bottles that I had to throw away. What a waste!!!