BPI Sports

Best EAA™, Sour Power, 13.6 oz (387 g)

Name: Best EAA™, Sour Power, 13.6 oz (387 g)
Brand: BPI Sports
Rating: 4.1 (1 reviews)

What We Researched

15 active ingredients analyzed · 7 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026

Product Score Good

Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

Ingredient	Amount	% DV
Potassium (as Disodium Phosphate)	110 mg	2%†
L-Leucine	3600 mg	**
L-Isoleucine	1800 mg	**
L-Valine	1800 mg	**
L-Lysine Hcl	900 mg	**
L-Threonine	950 mg	**
L-Phenylalanine	550 mg	**
L-Methionine	250 mg	**
L-Histidine	100 mg	**
L-Tryptophan	50 mg	**
Coconut Water Powder (Cocos nucifera)	200 mg	**

Bioavailability Excellent

Absorption Rating

Potassium (as Disodium Phosphate) Good
L-Leucine Good
L-Isoleucine Good
L-Valine Good
L-Lysine Hcl Good
L-Threonine Good
L-Phenylalanine Good
L-Methionine Good
L-Histidine Good
L-Tryptophan Good
Coconut Water Powder (Cocos nucifera) Fair

Other Ingredients Excellent

Fillers & Additives

Citric Acid
Natural and Artificial Flavors
Sucralose
Dipotassium Phosphate
Silica
Maltodextrin
Acesulfame-K

Efficacy Fair

Dosage Analysis

Potassium (as Disodium Phosphate) 110 mg Under-dosed
L-Leucine 3600 mg Effective
L-Isoleucine 1800 mg High
L-Valine 1800 mg Effective
L-Lysine Hcl 900 mg Under-dosed
L-Phenylalanine 550 mg Effective
L-Methionine 250 mg Under-dosed
L-Histidine 100 mg Under-dosed
L-Tryptophan 50 mg Under-dosed

Supplement Facts

Ingredient	Amount	% Daily Value
Calories	10
Total Carbohydrate	2 g	1%†
Total Sugars	0 g	**
Includes 0 g Added Sugars		0%†
Potassium (as Disodium Phosphate)	110 mg	2%†
L-Leucine	3600 mg	**
L-Isoleucine	1800 mg	**
L-Valine	1800 mg	**
L-Lysine Hcl	900 mg	**
L-Threonine	950 mg	**
L-Phenylalanine	550 mg	**
L-Methionine	250 mg	**
L-Histidine	100 mg	**
L-Tryptophan	50 mg	**
Coconut Water Powder (Cocos nucifera)	200 mg	**

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Citric Acid Safe

Adds tartness and acts as a natural preservative. Also aids in ingredient stability.

Natural and Artificial Flavors Generally_safe

It is used to improve the taste of the product.

Sucralose Generally_safe

Adds sweetness to chewables, gummies, and powdered supplements without calories.

Dipotassium Phosphate Generally_safe

It is used to maintain the pH of supplements.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Acesulfame-K Generally_safe

It is used to add sweetness to supplements without adding calories.

Price Comparison

iHerb $32.83 $1.09 / serving

Best Price

Price History

Tracked across major retailers. Updated periodically.

iHerb

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report

Transparency

3 claims

Third Party Testing Claim — Claimed Source

Testing Lab Disclosure — Claimed Source

Violation History

5 incidents

Prop 65 Lead2025-09-19Source

Lawsuit Deceptive packaging with excessive empty space ('slack-fill').2020Source

Lawsuit Best BCAA products were misbranded, underdosed, and falsely advertised as containing 'peptide linked' BCAAs.2018Source

Prop 65 Lead2014-01-31Source

Lawsuit Misleading advertising of products containing the stimulant DMAA.2011Source

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Frequently Asked Questions

Is BPI Sports Best EAA™, Sour Power a good supplement?

BPI Sports Best EAA™, Sour Power, 13.6 oz (387 g) received a product quality score of 82/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 15 active ingredients with 30 servings per container. Of the 7 inactive ingredients, 2 are rated safe and 0 are flagged for review. The manufacturer, BPI Sports, holds a brand trust score of 60/100.

What are the ingredients in BPI Sports Best EAA™, Sour Power?

BPI Sports Best EAA™, Sour Power contains 15 active ingredients: Calories (10), Total Carbohydrate (2 g), Total Sugars (0 g), Includes 0 g Added Sugars, Potassium (as Disodium Phosphate) (110 mg), L-Leucine (3600 mg), and 9 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is BPI Sports Best EAA™, Sour Power safe to take?

BPI Sports Best EAA™, Sour Power, 13.6 oz (387 g) has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is BPI Sports a trustworthy supplement brand?

BPI Sports receives a brand trust score of 60/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2009 and headquartered in Hollywood, FL, USA, the company offers 8 products in their lineup. Note: BPI Sports has 5 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.