---
product_id: 134709340
title: "Core Liquid Collagen Peptides, 18g Complete Protein | Doctor Recommended | Supports Recovery & Wound Healing | Zero Sugar, Zero Carbs, Ready to Drink | (Watermelon, 30 Fl Oz)"
brand: "proteinex"
price: "€ 72.06"
currency: EUR
in_stock: true
reviews_count: 8
category: "Proteinex"
url: https://www.desertcart.hr/products/134709340-core-liquid-collagen-peptides-18g-complete-protein-doctor-recommended-supports
store_origin: HR
region: Croatia
---

# 72 calories, zero sugar & carbs 18g protein per serving 18,000mg collagen types I & II Core Liquid Collagen Peptides, 18g Complete Protein | Doctor Recommended | Supports Recovery & Wound Healing | Zero Sugar, Zero Carbs, Ready to Drink | (Watermelon, 30 Fl Oz)

**Brand:** proteinex
**Price:** € 72.06
**Availability:** ✅ In Stock

## Summary

> 💧 Sip Smart, Glow Hard: The collagen drink that keeps you ahead of the wellness curve!

## Quick Answers

- **What is this?** Core Liquid Collagen Peptides, 18g Complete Protein | Doctor Recommended | Supports Recovery & Wound Healing | Zero Sugar, Zero Carbs, Ready to Drink | (Watermelon, 30 Fl Oz) by proteinex
- **How much does it cost?** € 72.06 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/134709340-core-liquid-collagen-peptides-18g-complete-protein-doctor-recommended-supports)

## Best For

- proteinex enthusiasts

## Why This Product

- Trusted proteinex brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pure Power Protein:** 18g of hydrolyzed collagen protein fuels your skin, hair, nails, and joints with clean, lean nutrition.
- • **Keto & Paleo Approved:** Zero sugars, carbs, fats, GMOs, gluten, and artificial nasties—perfect for clean, conscious lifestyles.
- • **Digestive Friendly Formula:** Easily absorbed amino acids support gut health and reduce stomach discomfort, keeping you energized all day.
- • **Ready-to-Drink Convenience:** Enjoy a delicious watermelon-flavored collagen boost anytime, anywhere—no mixing, no mess.
- • **Collagen Absorption Game-Changer:** Liquid hydrolyzed collagen delivers nearly 99% absorption—far superior to powders or pills for maximum results.

## Overview

Proteinex Medical Grade Liquid Hydrolyzed Collagen Protein is a keto- and paleo-friendly, ready-to-drink supplement delivering 18g of highly absorbable collagen protein and 18,000mg of collagen types I and II per serving. With zero sugars, carbs, fats, GMOs, gluten, or artificial additives, it supports healthy skin, hair, nails, joints, and digestion in a convenient watermelon-flavored liquid form.

## Description

Buy Proteinex Medical Grade Liquid Hydrolized Collagen Protein - Women and Men for Healthy Skin, Hair and Nails, Zero Sugars & Ready to Drink Protein Drink (30 Fl Oz, Watermelon) on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Know how to use it and you'll get good results - Okay. So I originally ordered the cherry flavor in hopes that it would taste like idk .... Those fruit punch juices? I was wrong. The cherry flavor is very medicinal-like and I HATE IT. I contacted desertcart support and they refunded me the $ so I could order a replacement. I decided to go with the watermelon flavor as I figured the grape would also be medicinal-like (I remembered medicine I used to take as a kid that was grape flavor, yuck). Let me tell you how I use this product to make it taste and easy to digest: (1) I use sparkling soda or sparkling water to trick my brain into thinking I'm drinking a yummy soda (diet coke connoisseur here🙋🏻‍♀️). The flavors I have tried are strawberry lemonade sparkling soda and plain sparkling water. With the Cherry flavor I originally got of this product, it was too much with the strawberry lemonade sparkling soda but again, I was doing two tablespoons. I think trying one tablespoon earlier in the day and the other tablespoon in another cup of sparkling soda later in the day will help with the medicine-like flavor. So with the cherry flavor, the plain sparkling water was the best for me personally. (2) I have decided to split the serving size into two. One tablespoon in one cup of sparkling soda during lunch and the other table spoon in another cup of sparkling soda during dinner. The watermelon flavor is quite delicious with plain sparkling water whether it's one tablespoon or two though it can be too sweet for many so I advise doing one tablespoon per cup of sparkling soda/water. That's it! It desolves nicely in sparkling soda/water though I noticed that when I did the full serving size in one cup of sparkling soda/water, the carbonation of the soda kind of went away?? Like, the "sparkling" part of the soda just turned flat, like a soda that's left open for too long or after all the ice is melted so again, I advise splitting the serving size into two to prevent this from happening if you really value the "sparkling" part of soda. Overall, the watermelon flavor and sparkling soda/water technique combination is a 10/10 for me.
Review: Thick like honey, but tasty and packed full of protein - Why is it so thick? I got the watermelon flavor. It tastes fine, but yeah, it’s surprisingly thick. It’s as thick as honey. Regardless of how thick it is, it is a super easy way to inject more protein into my diet. I try to hit my macros eating whole foods, but just can’t manage to hit my protein targets on food alone without pushing me over on fats and carbs. This adds more variety into my alternative protein options. I’ll definitely buy again.

## Features

- Keto and Paleo Friendly: This lean source of liquid hydrolyzed protein contains 18g of protein and 18,000mg of collagen per serving, only 72 calories. Formulated with clean ingredients and only what your body needs, no proprietary blends, you can ensure that it has no carbs, fats, and sugars, GMO, gluten, as well as artificial dyes and preservatives.
- 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.
- The Purest Form of Protein: With almost 99% absorption rate, our hydolized liquid protein supplement has been broken down into its simplest form of amino acids, making it easily absorbed by the body compared to tablets, powders and capsules. These sugar free energy drinks also help improve digestion for fewer upset stomachs.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07RSZRRKP |
| ASIN  | B07RSZRRKP |
| Best Sellers Rank | #30,957 in Health & Household ( See Top 100 in Health & Household ) #73 in Sports Nutrition Ready to Drink Protein |
| Brand Name | Proteinex |
| Customer Reviews | 4.2 4.2 out of 5 stars (1,311) |
| Date First Available  | May 23, 2019 |
| Diet Type | Keto, Paleo |
| Flavor | Watermelon |
| Item Form | Liquid |
| Item Weight | 1.65 Pounds |
| Manufacturer | Llorens Pharmaceutical International Division, Inc |
| Manufacturer  | Llorens Pharmaceutical International Division, Inc |
| Manufacturer Part Number | 5485951530 |
| Material Type Free | Sugar Free |
| Number of Items | 1 |
| Package Dimensions  | 8.54 x 3.54 x 3.54 inches; 1.65 Pounds |
| Primary Supplement Type | Collagen |
| Product Benefits | Protein Support |
| UPC | 054859550308 |
| Unit Count | 30.0 Fluid Ounces |

## Product Details

- **Brand:** Proteinex
- **Diet Type:** Keto, Paleo
- **Flavor:** Watermelon
- **Item Form:** Liquid
- **Item Weight:** 1.65 Pounds
- **Material Type Free:** Sugar Free
- **Number of Items:** 1
- **Primary Supplement Type:** Collagen
- **Product Benefits:** Protein Support
- **Unit Count:** 30.0 Fluid Ounces

## Images

![Core Liquid Collagen Peptides, 18g Complete Protein | Doctor Recommended | Supports Recovery & Wound Healing | Zero Sugar, Zero Carbs, Ready to Drink | (Watermelon, 30 Fl Oz) - Image 1](https://m.media-amazon.com/images/I/512Y9SW1iZL.jpg)

## Available Options

This product comes in different **Size, Flavor** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Know how to use it and you'll get good results
*by D***A on February 4, 2024*

Okay. So I originally ordered the cherry flavor in hopes that it would taste like idk .... Those fruit punch juices? I was wrong. The cherry flavor is very medicinal-like and I HATE IT. I contacted Amazon support and they refunded me the $ so I could order a replacement. I decided to go with the watermelon flavor as I figured the grape would also be medicinal-like (I remembered medicine I used to take as a kid that was grape flavor, yuck). Let me tell you how I use this product to make it taste and easy to digest: (1) I use sparkling soda or sparkling water to trick my brain into thinking I'm drinking a yummy soda (diet coke connoisseur here🙋🏻‍♀️). The flavors I have tried are strawberry lemonade sparkling soda and plain sparkling water. With the Cherry flavor I originally got of this product, it was too much with the strawberry lemonade sparkling soda but again, I was doing two tablespoons. I think trying one tablespoon earlier in the day and the other tablespoon in another cup of sparkling soda later in the day will help with the medicine-like flavor. So with the cherry flavor, the plain sparkling water was the best for me personally. (2) I have decided to split the serving size into two. One tablespoon in one cup of sparkling soda during lunch and the other table spoon in another cup of sparkling soda during dinner. The watermelon flavor is quite delicious with plain sparkling water whether it's one tablespoon or two though it can be too sweet for many so I advise doing one tablespoon per cup of sparkling soda/water. That's it! It desolves nicely in sparkling soda/water though I noticed that when I did the full serving size in one cup of sparkling soda/water, the carbonation of the soda kind of went away?? Like, the "sparkling" part of the soda just turned flat, like a soda that's left open for too long or after all the ice is melted so again, I advise splitting the serving size into two to prevent this from happening if you really value the "sparkling" part of soda. Overall, the watermelon flavor and sparkling soda/water technique combination is a 10/10 for me.

### ⭐⭐⭐⭐⭐ Thick like honey, but tasty and packed full of protein
*by R***H on December 23, 2025*

Why is it so thick? I got the watermelon flavor. It tastes fine, but yeah, it’s surprisingly thick. It’s as thick as honey. Regardless of how thick it is, it is a super easy way to inject more protein into my diet. I try to hit my macros eating whole foods, but just can’t manage to hit my protein targets on food alone without pushing me over on fats and carbs. This adds more variety into my alternative protein options. I’ll definitely buy again.

### ⭐⭐⭐⭐⭐ Proteinex
*by L***O on December 11, 2025*

I have purchased this product numerous times, it gives you adequate amount of protein per serving, I take it at least 3 times a day by tablespoon only and yes it's a little thick, however the watermelon taste is good yet a bit pricey. Still yet it's a good alternative to get your protein for the day. Good stuff!

## Frequently Bought Together

- 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)
- Frog Fuel Power Energized Protein Shot, 15g Protein Nano-Hydrolyzed Grass Fed Collagen, 80mg Caffeine, Fat & Sugar Free, 22 Amino Acids, 0 Carbs, Berry, 1 oz Packets, 24 Pack
- ProT Gold Liquid Collagen Protein Shot, 17g Clear Protein Nano-Hydrolyzed Grass Fed Collagen, 2g Arginine for Wound Support, Gluten Free, Sugar Free, 0g Carbs, Non GMO, Berry, 1 fl oz, 24 Pack

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-04-23*