Perfect Amino vs Kion Aminos (and a third option)
Facts checked on October 31, 2026. Prices and formulas change; check each brand's own site before you buy.
Perfect Amino by BodyHealth and Kion Aminos are both essential amino acid (EAA) supplements with large followings, and both come as a powder or a pill. The real differences are disclosure, flavor and how you take them. We make a third option, Rejuvenate Muscle Health, a single-serve stick, and it is in the table too. Every fact links to the brand's own page.
The short answer
Choose Kion Aminos if you want the amount of each amino acid listed and a leucine-forward formula (2,000 mg of 5,000 mg). Choose Perfect Amino if you want a sweetener-free tablet, more powder flavors, a lower price per serving on subscription, or an NSF Certified for Sport version. Choose Rejuvenate Muscle Health if you want one flavored 5-calorie stick, twice a day, with vitamin D3.
See the 12-Week Supply$1.07 a serving on the first order, with a 90-day money-back guarantee on the 12-Week Supply.
| Perfect Amino | Kion Aminos | Rejuvenate Muscle Health | |
|---|---|---|---|
| Format | Tablets or powder by the scoop | Powder by the scoop, or capsules (7 per serving) | Single-serve stick in 10 to 12 oz of water |
| Serving | 5 tablets or 1 scoop; "most people" take 2 to 4 a day (BodyHealth) | 1 scoop or 7 capsules | 1 stick, 2 a day hours apart |
| Calories per serving | "Less than one calorie" (label); other pages say 2 or 4 | Not stated on the product page | 5 |
| Amino acids | 5 g blend: 9 essential amino acids including tryptophan, plus nucleic acid building blocks | 5,000 mg: 9 essential amino acids, leucine 2,000 mg, tryptophan 3.5 mg | 3.87 g blend: 8 essential amino acids plus arginine (no tryptophan) |
| Amounts per amino acid listed | No, proprietary blend | Yes, each amino acid listed | No, blend total only |
| Also in the serving | Nucleic acid building blocks | None listed | 1,000 IU vitamin D3 |
| Sweetener | Tablets none; powder stevia Reb M, monk fruit, katemfe | Stevia and monk fruit | Sucralose and stevia |
| Flavors | Powder 7; tablets unflavored | 4 (Mango, Cool Lime, Mixed Berry, Watermelon) | 4 |
| Price per serving | $1.28 to $1.53; from $1.09 on subscription | $49.95 a tub, about $45 on subscription; servings per tub not stated | $2.14 single box; $1.61 on the 4-Week Supply; $1.07 first 12-Week Supply order |
| Certification | NSF Certified for Sport on dedicated versions | "Third-party tested for purity and potency" | Not claimed on this page |
Transparency: listed amounts or a proprietary blend
Kion lists every amino acid and its amount on the product page: 5,000 mg in total, with 2,000 mg of leucine, and a trace of tryptophan (3.5 mg). Perfect Amino describes its 5 g formula as a proprietary blend and does not list individual amounts.
Pills or powder
Both come both ways. Kion's capsules are seven to a serving; Perfect Amino's tablets are five to a serving, and BodyHealth suggests two to four servings a day. Kion's powder comes in four flavors and is sweetened with stevia and monk fruit. Perfect Amino's powder comes in seven flavors, sweetened with stevia, monk fruit and katemfe; its tablets have no sweetener.
Price
A tub of Kion Aminos is $49.95, about $45 on subscription. Kion's page does not state servings per tub, so a per-serving price would be a guess; check the label before comparing. Perfect Amino is $1.28 to $1.53 a serving bought once and from $1.09 on subscription.
What each brand claims
Kion calls Aminos "better than protein" and "a clinically formulated blend of all 9 essential amino acids." BodyHealth says Perfect Amino offers "up to 99% utilization" and describes a serving as "the protein equivalent of 30 grams of whey." These are each brand's own claims, quoted as written.
A third option: Rejuvenate Muscle Health
Rejuvenate Muscle Health is one stick poured into water, two a day, 5 calories each, with 1,000 IU of vitamin D3. It activates muscle comparable to 20g of protein per serving†‡ and contains no protein. Its blend has eight essential amino acids plus arginine, without tryptophan, and it is sweetened with sucralose and stevia. Compare Rejuvenate with Perfect Amino.
See the 12-Week Supply$1.07 a serving on the first order, with a 90-day money-back guarantee on the 12-Week Supply.
Questions people ask
Is Kion Aminos better than Perfect Amino?
It depends on what you value. Kion lists every amino acid amount; Perfect Amino offers sweetener-free tablets, more flavors and NSF Certified for Sport versions.
How many capsules or tablets is a serving?
Kion Aminos capsules: 7 per serving. Perfect Amino tablets: 5 per serving, with BodyHealth suggesting 2 to 4 servings a day.
Do Kion Aminos and Perfect Amino contain tryptophan?
Both list tryptophan. Kion lists 3.5 mg per serving; Perfect Amino does not disclose individual amounts.
What sweetener does each use?
Kion powder: stevia and monk fruit. Perfect Amino powder: stevia Reb M, monk fruit and katemfe; its tablets have no sweetener.
Is there an option without pills or scoops?
Rejuvenate Muscle Health is a single-serve stick mixed into water, 5 calories, two a day.
Sources: BodyHealth, Perfect Amino tablets; BodyHealth, Perfect Amino powder; BodyHealth, Perfect Amino user guide; Kion Aminos powder; Kion Aminos capsules label (NIH DSLD); Bukhari et al. (2015), Am J Physiol Endocrinol Metab 308(12):E1056-E1065. Competitor claims are quoted as each brand states them. Rejuvenate Muscle Health is not affiliated with the other brands named here; their names are trademarks of their owners.
† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
‡ Bukhari et al. (2015). Am J Physiol Endocrinol Metab, 308(12), E1056–E1065.