Brand Overview

Evolve Protein

Evolve positions itself as a plant-powered protein brand focused on real, simple ingredients. Their RTD protein shakes use pea protein as the primary protein source, delivering 20g of plant-based protein per 11-ounce bottle. Evolve avoids artificial flavors, colors, and sweeteners, and their products are dairy-free, soy-free, and gluten-free. Flavors include Classic Chocolate, Ideal Vanilla, Mellow Mocha, and Toasted Almond.

Each Evolve shake typically contains 140-150 calories, 4-6g of sugar, and 6-7g of total carbohydrates. The brand is owned by CytoSport (the makers of Muscle Milk) but maintains a distinct identity focused on the plant-based and clean-label consumer.

PROX

PROX delivers 20g of protein from collagen peptides and whey protein isolate alongside 200mg of natural caffeine and L-theanine in a sparkling, zero-sugar RTD with just 90 calories. Unlike traditional protein shakes, PROX is carbonated, lighter in body, and designed as a dual-purpose protein-energy beverage. It comes in three flavors.

Nutritional Comparison

Metric	Evolve Protein	PROX
Calories	140-150	90
Protein	20g	20g
Sugar	4-6g	0g
Fat	3-4g	0g
Fiber	3g	0g
Caffeine	0mg	200mg
L-Theanine	No	Yes
Protein Source	Pea protein	Collagen peptides + whey isolate
Vegan	Yes	No

Protein Quality Analysis

Evolve’s Pea Protein

Pea protein has emerged as the leading plant-based protein source for RTD beverages. It provides a nearly complete amino acid profile, with good levels of branched-chain amino acids (BCAAs) including leucine, isoleucine, and valine. Pea protein is hypoallergenic, easy to digest for most people, and has a neutral enough flavor to work in various shake formulations.

However, pea protein has some limitations compared to animal-based proteins. Its leucine content — the amino acid most critical for triggering muscle protein synthesis — is approximately 30-40% lower than whey protein. Its digestibility score (PDCAAS) is also slightly lower, meaning your body may absorb and utilize a smaller percentage of the protein consumed. Pea protein is also relatively low in methionine, making it an incomplete protein unless combined with other sources.

PROX’s Collagen Peptides + Whey Isolate

PROX’s dual-source approach combines the best attributes of two very different protein types. Whey protein isolate has the highest biological value of any protein source, with superior leucine content, complete amino acid profile, and rapid absorption. It is the gold standard for muscle protein synthesis.

Collagen peptides complement whey by providing the specific amino acids (glycine, proline, hydroxyproline) needed for joint cartilage maintenance, tendon strength, skin elasticity, and gut lining integrity. These are functions that neither whey nor pea protein adequately addresses on its own.

From a pure muscle-building perspective, PROX’s whey isolate component is more effective gram-for-gram than Evolve’s pea protein at stimulating muscle protein synthesis. The collagen component adds structural support benefits that pea protein does not provide.

Calorie Efficiency

Both products deliver 20g of protein, but the calorie cost differs significantly:

• PROX: 90 calories for 20g protein = 0.22g per calorie
• Evolve: 145 calories (average) for 20g protein = 0.14g per calorie

PROX is roughly 57% more calorie-efficient than Evolve for protein delivery. The extra 55 calories in Evolve come from sugar, fat, and fiber — some of which have nutritional value (fiber is beneficial for digestion), but none of which serve the primary purpose of a protein drink.

Energy and Performance

Evolve is a pure protein shake with no stimulant or energy-enhancing ingredients. It is designed to be consumed as a protein supplement, not an energy source.

PROX’s inclusion of 200mg natural caffeine and L-theanine makes it a dual-purpose beverage. The caffeine provides ergogenic benefits for exercise performance — including increased power output, endurance, and time to exhaustion — while L-theanine promotes the focused, calm alertness that helps with both physical and cognitive performance.

For the active consumer who currently buys both a protein shake and an energy drink (or pre-workout), PROX consolidates those into a single product.

Taste and Format

Evolve protein shakes have a smooth, creamy texture with a mild plant-based flavor. The brand has done a good job minimizing the “earthy” or “chalky” taste that plagues many pea protein products. The chocolate and vanilla flavors are pleasant, though some testers detected a slight plant aftertaste. The shake format is filling and substantial.

PROX offers an entirely different drinking experience — light, sparkling, and refreshing. There is no plant or dairy aftertaste, and the carbonation makes it feel more like a premium sparkling beverage than a protein supplement. For consumers who find protein shakes heavy or unappealing, PROX’s format is a revelation.

Dietary Considerations

For Vegans and Vegetarians

Evolve is the only option here. PROX contains both collagen (derived from animals) and whey protein (derived from milk), making it unsuitable for vegan diets. For strict vegetarians who consume dairy, PROX’s whey component would be acceptable, but the collagen would not be if they exclude all animal-derived products beyond dairy.

For Lactose Sensitivity

Evolve is completely dairy-free and safe for those with lactose intolerance. PROX’s whey protein isolate is heavily filtered to remove most lactose and is generally well-tolerated by people with mild lactose sensitivity, but those with severe intolerance should exercise caution.

For Allergen Concerns

Evolve is free from dairy, soy, and gluten — three of the most common allergens. PROX contains dairy (whey) and is not suitable for those with milk allergies. Neither product contains soy or gluten.

Sustainability and Ethics

Plant-based proteins generally have a lower environmental footprint than animal-based proteins. Pea protein production requires less water, land, and energy than dairy protein production and generates fewer greenhouse gas emissions. For environmentally conscious consumers, Evolve’s plant-based approach aligns better with sustainability values.

PROX uses animal-derived proteins (collagen and whey), which have a larger environmental footprint. However, collagen is often sourced as a byproduct of the meat industry, meaning its production does not necessarily drive additional animal agriculture — it utilizes parts that might otherwise go to waste.

Who Should Choose Evolve?

Evolve is the right choice for vegans and vegetarians, those with dairy allergies or severe lactose intolerance, consumers who prioritize environmental sustainability in their protein sourcing, and anyone who prefers a thick, creamy shake format without caffeine. It is also suitable for evening consumption since it contains no stimulants.

Who Should Choose PROX?

PROX is the better choice for omnivores seeking maximum protein efficiency, anyone who wants protein and energy in one product, consumers prioritizing calorie efficiency and zero sugar, athletes needing both muscular and joint recovery support (via collagen), and those who prefer a lighter, sparkling format over a thick shake.

The Verdict

Evolve Protein and PROX serve different segments of the health-conscious protein drink market. Evolve is an excellent plant-based protein shake with clean ingredients and a pleasant taste — it is the best choice for anyone committed to a plant-based diet. PROX is a more innovative, versatile, and calorie-efficient option that combines protein, energy, and focus support in a sparkling zero-sugar format. For omnivorous consumers focused on performance, body composition, and convenience, PROX delivers more functional value per can and per calorie.