Thorne Potassium Citrate, 90 Capsules (99 mg per Capsule) supplement bottle
Thorne

Potassium Citrate, 90 Capsules (99 mg per Capsule)

What We Researched
1 active ingredient analyzed · 4 inactive ingredients decoded · 4 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
75
Product Score Fair
90
Brand Score Excellent

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Potassium (as Potassium Citrate) 99 mg 2%
Bioavailability Excellent

Absorption Rating

  • Potassium (as Potassium Citrate) Good
Other Ingredients Excellent

Fillers & Additives

  • Hypromellose (Derived from Cellulose) Capsule
  • Microcrystalline Cellulose
  • Leucine
  • Silicon Dioxide
Efficacy Very Poor

Dosage Analysis

  • Potassium (as Potassium Citrate) 99 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Potassium (as Potassium Citrate) 99 mg 2%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Hypromellose (Derived from Cellulose) Capsule Safe

It is used to encapsulate supplement ingredients.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Leucine Safe

It is used for its potential muscle-building and recovery benefits.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$19$18$17$16$15 Mar 12 $17.00$17.00
iHerb
Vitacost

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

Brand Trust Report
Thorne

Founded 1984 · New York, NY, United States · 161 products · thorne.com

Certifications

4 certifications
Consumerlab Verified
Nsf Certified For Sport Verified Source
Nsf Gmp Verified Source
Fda Gmp Inspections Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source

Violation History

2 incidents
Recall Captomer, Captomer-2502014-06-12Source
Prop 65 Lead2013-12-13Source
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Frequently Asked Questions
Is Thorne Potassium Citrate, 90 Capsules (99 mg per Capsule) a good supplement?

Thorne Potassium Citrate, 90 Capsules (99 mg per Capsule) received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 1 active ingredients All 4 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Thorne, holds a brand trust score of 90/100 with 4 verified certifications including Consumerlab, Nsf Certified For Sport, Nsf Gmp, Fda Gmp Inspections.

What are the ingredients in Thorne Potassium Citrate, 90 Capsules (99 mg per Capsule)?

Thorne Potassium Citrate, 90 Capsules (99 mg per Capsule) contains 1 active ingredients: Potassium (as Potassium Citrate) (99 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Thorne Potassium Citrate, 90 Capsules (99 mg per Capsule) safe to take?

Thorne Potassium Citrate, 90 Capsules (99 mg per Capsule) has been analyzed for ingredient safety across all its components. All 4 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Thorne a trustworthy supplement brand?

Thorne receives a brand trust score of 90/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1984 and headquartered in New York, NY, United States, the company offers 161 products in their lineup. They hold 4 verified certifications including Consumerlab, Nsf Certified For Sport, Nsf Gmp, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Thorne has 2 historical regulatory incidents on record, which are factored into the trust score.

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Magnesium Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding magnesium good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

How much magnesium per day?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What is zinc good for?

Zinc Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding zinc good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

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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.