Short answer
On confirmed label data: Nutricost lists the most EAAs per scoop (8 g, mostly BCAAs), Thorne is NSF Certified for Sport with 1.25 g leucine, Transparent Labs is sold as 6.7 g per serving, Kaged Amino Synergy has 3 g of fermented EAAs, and PerfectAmino is 5 g per 5 tablets. For Optimum Nutrition, Xtend, Ghost, Naked and Kion, check the current label; listings conflict or are incomplete.
The comparison
EAA brands, confirmed facts only
| Brand and product | Form | What we could confirm | Source |
|---|---|---|---|
| Kaged Amino Synergy | Powder | 3 g fermented EAA matrix per 6.5 g scoop; caffeinated version exists; Informed Sport per Kaged | Listing |
| Transparent Labs Intra EAA | Powder | Sold as 6.7 g EAAs per serving; sources differ | Listing |
| Thorne Amino Complex | Powder | 1.25 g leucine per scoop; NSF Certified for Sport; vegan badge | Thorne |
| Nutricost Performance EAA | Powder | 8 g EAAs per 11 g scoop, 6 g of it 2:1:1 BCAAs | Listing |
| BodyHealth PerfectAmino | Tablets, powder | 5 g blend per 5 tablets; histidine varies by listing | Listing |
| Optimum Nutrition amino energy | Powder | Contains caffeine; check EAA amounts | Check label |
| Xtend EAA | Powder | EAA line separate from Xtend Original BCAA | Check label |
| Ghost Amino | Powder | Listings conflict on leucine; formula may have changed | Check label |
| Naked Nutrition EAAs | Powder | Unflavored option sold; serving sizes conflict in listings | Check label |
| Kion Aminos | Capsules, powder | Several capsules per serving | Check label |
Picks from the brands
-
01Most grams
Nutricost Performance EAA
Best for: the biggest listed dose per scoop
- EAAs
- 8 g per scoop
- Leucine
- About 3 g
- Methionine
- 10 mg
- Label note
- For healthy adults 18+
- Heavily BCAA-weighted; unflavored version has a short ingredient list.
-
02Flavors
Xtend EAA
Best for: a flavored training drink
- Form
- Powder
- Check
- EAA version, not Original BCAA
- We could not confirm current grams per serving; read the panel.
-
03Caffeine
Optimum Nutrition amino energy
Best for: people who want caffeine with aminos
- Form
- Powder
- Caffeine
- Yes
- Not a caffeine-free or bedtime option. Check how much of each EAA it lists.
-
04Flavors
Ghost Amino
Best for: flavor-led training drinks
- Form
- Powder
- Check
- Leucine per serving
- Listings disagree on leucine, so read the current panel.
-
05Unflavored
Naked Nutrition EAAs
Best for: mixing into your own drink
- Form
- Powder
- Check
- Grams per scoop
- Minimal ingredients is the appeal; confirm all nine are listed.
-
06Capsules
Kion Aminos
Best for: capsules or powder from one brand
- Form
- Capsules, powder
- Check
- Grams per serving
- Capsule servings take several pills; compare grams with powders.
Brands such as Myprotein and others also sell EAA powders; the label checklist works on any of them.
Questions people ask
What is the best EAA brand?
It depends on what you need: dose, certification, flavor, form or a short ingredient list. Compare the panel rather than the brand. Our buying guide sorts picks by need.
Is Xtend an EAA or BCAA?
Xtend Original is a BCAA product. Xtend also sells an EAA line. Check the label for all nine essential amino acids.
Does Optimum Nutrition make an EAA?
Optimum Nutrition sells amino energy products that contain caffeine. Check whether the version you choose lists all nine EAAs and in what amounts.
Which EAA brands are third-party certified?
Thorne lists Amino Complex as NSF Certified for Sport. Kaged says every batch is tested by Informed Sport. Reviews report Informed Choice testing for Transparent Labs Intra. Verify in each program database.
Sources
- Bodybuilding.com listing, Kaged Amino Synergy supplement facts
- The Vitamin Shoppe listing, Transparent Labs Intra EAA (6.7 g Amino9 EAAs)
- Thorne, Amino Complex (Berry) product page and supplement facts
- Vitacost listing, Nutricost Performance EAA supplement facts
- Fullscript catalog, BodyHealth PerfectAmino tablets
Last reviewed October 12, 2026. Formulas, labels and listings change; check the current label before you buy. This page is general information, not medical advice.