Isatori ISA-Test GF, 120 Bio-Diffusion Capsules supplement bottle
Isatori

ISA-Test GF, 120 Bio-Diffusion Capsules

What We Researched
7 active ingredients analyzed · 8 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
63
Product Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as Ascorbic Acid) 25 mg 28%
Vitamin B6 (as Pyridoxine HCl) 7 mg 412%
Magnesium (as Oxide & Aspartate) 300 mg 71%
Zinc (as Zinc Aspartate) 20 mg 182%
ISA-TEST® GF a proprietary Blend Containing:Tribulus Extract (Tribulus terrestris L.) (fruit) (60% total saponins, 20% protodioscin), Epimedium Extract (Epimedium sagittatum and Epimedium brevicornum)(leaf)(std. for 10% icariin), El-450™M Estrogen Inhibitor Citrus bioflavanoid complex (Citrus sinensis)(peel and fruit)(50% hesperidin), Tongkat ali Extract 20:1 (Eurycoma longifolia)(root), Ajuga turkestanica Extract 10:1 (stem and leaf), Grapeseed Extract (Vitis vinifera L.)(seed) (Std. for 95% proanthocyanidins), Fenugreek Extract (Trigonella foenum-graecum L.)(seed)(standardized for 50% saponins), Rhaponticum carthamoides Extract (root)(Standardized for 5% Ecdysterones) 1,714 mg *
SOMATRIN™, a Proprietary Blend containing:Velvet bean Extract (Mucuna pruriens)(seed)(std. for 20% L-Dopa). Nettle Extract 30:1 325mg (Urtica dioica)(root), Melatonin (N-Acetyl-5-Methoxytryptamine). 325 mg *
ISAFLOW™, a Proprietary Blend containing:Butchers broom extract (Ruscus aculeatus)(root)(standardized for 20% sterolic heterosides), Hesperidin methyl chalcone (citrus sinensis)(fruit)(90% hesperidin) 100 mg *
Bioavailability Fair

Absorption Rating

  • Vitamin C (as Ascorbic Acid) Fair
  • Vitamin B6 (as Pyridoxine HCl) Fair
  • Magnesium (as Oxide & Aspartate) Good
  • Zinc (as Zinc Aspartate) Fair
  • ISA-TEST® GF a proprietary Blend Containing:Tribulus Extract (Tribulus terrestris L.) (fruit) (60% total saponins, 20% protodioscin), Epimedium Extract (Epimedium sagittatum and Epimedium brevicornum)(leaf)(std. for 10% icariin), El-450™M Estrogen Inhibitor Citrus bioflavanoid complex (Citrus sinensis)(peel and fruit)(50% hesperidin), Tongkat ali Extract 20:1 (Eurycoma longifolia)(root), Ajuga turkestanica Extract 10:1 (stem and leaf), Grapeseed Extract (Vitis vinifera L.)(seed) (Std. for 95% proanthocyanidins), Fenugreek Extract (Trigonella foenum-graecum L.)(seed)(standardized for 50% saponins), Rhaponticum carthamoides Extract (root)(Standardized for 5% Ecdysterones) Fair
  • SOMATRIN™, a Proprietary Blend containing:Velvet bean Extract (Mucuna pruriens)(seed)(std. for 20% L-Dopa). Nettle Extract 30:1 325mg (Urtica dioica)(root), Melatonin (N-Acetyl-5-Methoxytryptamine). Fair
  • ISAFLOW™, a Proprietary Blend containing:Butchers broom extract (Ruscus aculeatus)(root)(standardized for 20% sterolic heterosides), Hesperidin methyl chalcone (citrus sinensis)(fruit)(90% hesperidin) Fair
Other Ingredients Poor

Fillers & Additives

  • Gelatin
  • Magnesium Stearate
  • Silicon Dioxide
  • Microcrystalline Cellulose
  • FD&C Red #40 Medium
  • Candurin Silver
  • FD&C Red #3 High
  • FD&C Blue #1 Medium
Efficacy Very Good

Dosage Analysis

  • Vitamin C (as Ascorbic Acid) 25 mg Under-dosed
  • Vitamin B6 (as Pyridoxine HCl) 7 mg Effective
  • Magnesium (as Oxide & Aspartate) 300 mg Effective
  • Zinc (as Zinc Aspartate) 20 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (as Ascorbic Acid) 25 mg 28%
Vitamin B6 (as Pyridoxine HCl) 7 mg 412%
Magnesium (as Oxide & Aspartate) 300 mg 71%
Zinc (as Zinc Aspartate) 20 mg 182%
ISA-TEST® GF a proprietary Blend Containing:Tribulus Extract (Tribulus terrestris L.) (fruit) (60% total saponins, 20% protodioscin), Epimedium Extract (Epimedium sagittatum and Epimedium brevicornum)(leaf)(std. for 10% icariin), El-450™M Estrogen Inhibitor Citrus bioflavanoid complex (Citrus sinensis)(peel and fruit)(50% hesperidin), Tongkat ali Extract 20:1 (Eurycoma longifolia)(root), Ajuga turkestanica Extract 10:1 (stem and leaf), Grapeseed Extract (Vitis vinifera L.)(seed) (Std. for 95% proanthocyanidins), Fenugreek Extract (Trigonella foenum-graecum L.)(seed)(standardized for 50% saponins), Rhaponticum carthamoides Extract (root)(Standardized for 5% Ecdysterones) 1,714 mg *
SOMATRIN™, a Proprietary Blend containing:Velvet bean Extract (Mucuna pruriens)(seed)(std. for 20% L-Dopa). Nettle Extract 30:1 325mg (Urtica dioica)(root), Melatonin (N-Acetyl-5-Methoxytryptamine). 325 mg *
ISAFLOW™, a Proprietary Blend containing:Butchers broom extract (Ruscus aculeatus)(root)(standardized for 20% sterolic heterosides), Hesperidin methyl chalcone (citrus sinensis)(fruit)(90% hesperidin) 100 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Microcrystalline Cellulose Safe

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

FD&C Red #40 Caution

It is used to improve the appearance of the supplement.

Candurin Silver Unknown
FD&C Red #3 Unknown
FD&C Blue #1 Caution

It is used to improve the appearance of the supplement.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$40$39$38$37$36 Mar 12 $38.00
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
Isatori

Founded 2001 · Golden, Colorado, United States · 25 products · isatori.com/

Certifications

1 certification
Health Canada Licensed Verified Source

Transparency

1 claim

Violation History

5 incidents
Lawsuit A consumer filed a class action lawsuit against FitLife Brands, Inc. alleging that the company's 'PMD Pump Fuel' pre-workout supplement does not contain the advertised amount of certain ingredients.2022Source
Prop 65 Lead2015-10-22Source
Prop 65 Lead2014-09-26Source
Fda Warning The product 'PWR' was found to contain Dimethylamylamine (DMAA), which the FDA considers an unapproved new dietary ingredient.2012-04-24Source
Recall Hardcore Energize Bullet2009-07-02Source
Related Supplements
Frequently Asked Questions
Is Isatori ISA-Test GF, 120 Bio-Diffusion Capsules a good supplement?

Isatori ISA-Test GF, 120 Bio-Diffusion Capsules received a product quality score of 63/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 7 active ingredients with 30 servings per container. Of the 8 inactive ingredients, 4 are rated safe and 2 are flagged for review.

What are the ingredients in Isatori ISA-Test GF, 120 Bio-Diffusion Capsules?

Isatori ISA-Test GF, 120 Bio-Diffusion Capsules contains 7 active ingredients: Vitamin C (as Ascorbic Acid) (25 mg), Vitamin B6 (as Pyridoxine HCl) (7 mg), Magnesium (as Oxide & Aspartate) (300 mg), Zinc (as Zinc Aspartate) (20 mg), ISA-TEST® GF a proprietary Blend Containing:Tribulus Extract (Tribulus terrestris L.) (fruit) (60% total saponins, 20% protodioscin), Epimedium Extract (Epimedium sagittatum and Epimedium brevicornum)(leaf)(std. for 10% icariin), El-450™M Estrogen Inhibitor Citrus bioflavanoid complex (Citrus sinensis)(peel and fruit)(50% hesperidin), Tongkat ali Extract 20:1 (Eurycoma longifolia)(root), Ajuga turkestanica Extract 10:1 (stem and leaf), Grapeseed Extract (Vitis vinifera L.)(seed) (Std. for 95% proanthocyanidins), Fenugreek Extract (Trigonella foenum-graecum L.)(seed)(standardized for 50% saponins), Rhaponticum carthamoides Extract (root)(Standardized for 5% Ecdysterones) (1,714 mg), SOMATRIN™, a Proprietary Blend containing:Velvet bean Extract (Mucuna pruriens)(seed)(std. for 20% L-Dopa). Nettle Extract 30:1 325mg (Urtica dioica)(root), Melatonin (N-Acetyl-5-Methoxytryptamine). (325 mg), and 1 more. Notable high-dose ingredients include Vitamin B6 at 412% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Isatori ISA-Test GF, 120 Bio-Diffusion Capsules safe to take?

Isatori ISA-Test GF, 120 Bio-Diffusion Capsules has been analyzed for ingredient safety across all its components. Of 8 inactive ingredients, 4 are rated safe. 2 ingredients are flagged for review: FD&C Red #40, FD&C Blue #1. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

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.