Guides / Choosing a Clean Protein Powder
How to Choose a Clean Protein Powder
“Clean” isn't a regulated term — anyone can print it. Here's how to check for yourself, in about thirty seconds with the label in your hand.
The 30-second label check
- 1Count the ingredients. Under about eight is a good sign.
- 2Scan for sweeteners — stevia and monk fruit are whole-plant options; sucralose and sugar alcohols are not.
- 3Look for gums. Xanthan, guar, carrageenan — all avoidable.
- 4Check for the words “proprietary blend”. If present, you can't know the doses.
- 5Find the protein-to-scoop-weight ratio.
- 6Look for third-party testing, named on the package.
Ingredients worth avoiding — and why
None of these are here because they're exotic. They're here because they're the most common things standing between a protein powder and a clean label.
| Avoid | Why |
|---|---|
| Sucralose, aspartame, acesulfame potassium | Artificial sweeteners. Some people report GI upset; many buyers avoid them on principle. Almost always used because they're cheaper than the alternatives. |
| Sugar alcohols (erythritol, maltitol, sorbitol) | A very common cause of bloating, gas, and cramping — especially at the doses used to sweeten a whole scoop. |
| Gums (xanthan, guar, carrageenan, cellulose gum) | Thickeners that improve mouthfeel cheaply. Frequent trigger for bloating in sensitive people. A good formula doesn't need them. |
| “Proprietary blend” | Legally lets a brand hide how much of each ingredient is present. Nearly always means the expensive ingredients are present in token amounts. |
| Added sugars / maltodextrin | Cheap bulking calories. Maltodextrin has a higher glycemic index than table sugar, which matters if you're watching blood sugar. |
| Artificial colors | No nutritional purpose whatsoever in a powder you're about to blend into something opaque. |
| Amino spiking (glycine, taurine, creatine high in the list) | Cheap free-form aminos inflate the measured protein number without delivering complete protein. If they appear near the top of the ingredient list, be suspicious. |
The one that catches people out: “no added sugar” on the front says nothing about sugar alcohols or artificial sweeteners. A powder can be sugar-free and still be full of the additives most likely to upset your stomach. The front of the bag is marketing; the back is information.
Frequently asked questions
What does 'clean protein powder' actually mean?
There's no legal definition, which is precisely why the term gets abused. In practice a useful working definition is: a short ingredient list you can read out loud, no artificial sweeteners or colors, no gums or sugar alcohols, no proprietary blends, no added sugar, and third-party testing to confirm the label is accurate.
Are natural flavors bad?
Not inherently, but the category is broad enough to hide a lot. 'Natural flavor' can legally cover flavor compounds derived from a natural source and then heavily processed. What matters is whether the brand will tell you where theirs come from and how they're extracted. If they won't say, that's the answer.
Why do some protein powders upset my stomach?
The three usual culprits, in order: lactose (use whey isolate rather than concentrate), sugar alcohols like erythritol and maltitol, and gums such as xanthan gum. Many people blame whey itself when the actual trigger is an additive that had nothing to do with the protein.
Is third-party testing important?
Yes, because supplements are not pre-approved by the FDA — a company's label is essentially a self-report until someone independent checks it. Third-party testing verifies both potency and contaminants like heavy metals. Certifications such as Informed Sport or NSF Certified for Sport are the most rigorous versions of this.
Does grass-fed whey actually matter?
Honestly, less than most marketing implies when it comes to the protein itself — the amino acid profile is broadly similar. It matters if you care about farming practice and sourcing standards, and grass-fed sourcing often correlates with a supplier that's more careful generally. Treat it as a signal about the brand rather than a dramatic nutritional upgrade.
How much protein should a scoop have?
Most quality powders deliver 20 to 25 grams per scoop. More important than the headline number is the ratio: check protein grams against total scoop weight. A 30g scoop delivering 20g of protein is mostly protein; a 40g scoop delivering the same 20g is mostly something else.
How ours measures up against that checklist
We publish the full ingredient list and sourcing for every flavor — including where our natural flavors come from and how the extracts are made.