Only Protein · label read against the research
Only Protein Protein Powder Vanilla
Nothing in here reaches an amount we have seen work.
Nothing in here reaches an amount we’ve seen work.
That isn’t proof it does nothing — it’s the honest limit of what we can tell you.
Supplement Facts
Serving Size 27 Gram(s)
Servings Per Container 21
† Daily Value not established, or not stated on this label.
What the maker says
Their words, from the label. We show them so you can see what you’re being told. They’re Only Protein’s claims, not our findings.
What they say it’s for
- “Amino Acid Profile Essential Amino Acids Isoleusine 1200 mg Leucine 1980 mg Lysine 1760 mg Methionine 400 mg Phenylalanine 640 mg Threonine 1250 mg Tryptophan 395 mg Valine 1060 mg Non Essential Amino Acids Histidine 309 mg Alanine 978 mg Arginine 543 mg Aspartic Acid 2020 mg Cysteine/Cystine 478 mg Glutamic Acid 3170 mg Glycine 369 mg Proline 1100 mg Serine 884 mg Tyrosine 614 mg”
- “ALLERGY WARNING - Contains: Milk By-Products”
- “100% All Natural New Zealand Whey”
How they say to take it
- Mix with 4-6 ounces of water. Shake well until completely dissolved. JUST ADD TO WATER
- JUST ADD TO 4-6 OZ OF WATER
These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure or prevent any disease.
Worth knowing about this bottle
Calcium with Iron likely, not settled
Calcium can reduce how much iron the body absorbs from a meal or supplement, but the effect depends heavily on dose and timing. Long-term studies in people eating typical mixed diets show little real impact on iron status.
What to do: If taking separate iron and calcium supplements, space them roughly 2 hours apart. This matters most for people with elevated iron needs (pregnancy, iron-deficiency anemia) rather than the general population.
Calcium with Iron Bisglycinate
Calcium can inhibit iron absorption by 50-60% when taken together at doses above 300mg.
What to do: Separate calcium and iron supplements by at least 2 hours. Take iron on an empty stomach for best absorption.
Vitamin C and Iron work better together
Taking vitamin C alongside plant-based (non-heme) iron helps the body absorb more of that iron. This matters most for people relying on non-meat iron sources, like vegetarians or those using iron supplements.
Vitamin C and Iron Bisglycinate work better together
Vitamin C enhances non-heme iron absorption by up to 67%, converting ferric iron to the more absorbable ferrous form.
1 present in trace amounts
Far under everything studied. No trial speaks to what this much does.
- Some evidence for chronic inflammation — dose is 99% short of the 500–2000 mg tested.
- Some evidence for slow recovery — dose is 99% short of the 500–2000 mg tested.
Label read from the NIH Dietary Supplement Label Database. Formulations change — check the panel on the bottle in your hand. Check a different product.