ProteinRx | Yeast Protein Isolate

Most people describe the flavor as something mild, like an oat or nut milk. Our current recipe is ‘Unflavored’ - we like to call it ‘naked’ - it’s simple, with a touch of monk fruit sweetener for flavor. If you generally like things sweeter, go with the version with 'Stevia'; or 'Unsweetened' if you prefer no monk fruit or stevia.

We like unflavored because it's versatile -- add fruit, maybe peanut butter, maybe cacao powder, or even bake with it -- It'll taste great any way you like it; even in water.

Most people under-estimate the protein they should consume in a day in order to thrive. The DRV, or daily recommended value is generally low, hard to interpret, and based on ‘enough to survive’. Most professionals agree that active bodies need about 1g of protein per pound of body weight. We’re hoping to help you achieve this goal in a tasty way.

Our founder created ProteinRx to improve grandmom's strength, give his vegetarian wife a better option, and strengthen his aging parents.

In general, it's a high quality protein source to add to a diet that keeps you full with a great protein & fiber combo and no sugar.

The bonus to yeast is that it works for sensitive stomach, food allergies, and vegan lifestyles.

Our protein blend uses a unique main ingredient derived from extracting the protein out of baker’s yeast cells.

This single-cell protein isolate is unique in that it doesn’t involve plants OR animals -- in fact, it comes from the fungal kingdom.

You get a complete protein with an amino acid profile similar to whey, without the allergens, and without using as much water, land, or pesticides.

Without plants or animals! Our protein comes from fermented yeast, fermented in tanks similar to those used for beer brewing. The yeast cells are broken apart and the protein is mechanically separated.

You choose whether you want unsweetened, organic monk fruit, and/or stevia - All are great options to keep insulin and glucose levels healthy.

'Monk Fruit and Stevia' is the sweetest, and unsweetened is great for baking or savory applications

Trace amounts — far less than most protein powders. Every batch is third-party tested. Our lead content is 0.077 ppm, compared to 0.5–0.6 ppm typically found in pea and rice proteins. That's roughly 7x lower.

Clean protein, verified by an independent lab. No guessing.

View our Certificate of Analysis (COA: Dec 24, 2025)

Yeast Protein has an Amino Acid profile similar to Whey, and both have a PDCAAS score of 1.0 (Protein Digestibility Corrected Amino Acid Score, a measure of how good a protein is for you, and 1.0 is the highest possible score, meaning it's excellent). See the chart on here for a Per 100g Amino Acid breakdown of Yeast Protein compared to Whey Protein

ProteinRx is a protein powder blend designed to be used daily in smoothies, yogurt, oats/chia, and even baking.

It’s a simple and clean blend with 6 ingredients, mostly protein and easily digested fiber, designed to keep you feeling strong, confident, and satiated.