Force Factor LeanFire® with Next-Gen Slimvance, 60 Capsules supplement bottle
Force Factor

LeanFire® with Next-Gen Slimvance, 60 Capsules

What We Researched
13 active ingredients analyzed · 9 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
52
Product Score Poor
67
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Niacin (as Niacinamide) 10 mg 63%
Vitamin B6 (as Pyridoxine HCl) 7 mg 412%
Vitamin B12 (as Cyanocobalamin) 12 mcg 500%
Energy and Weight Loss Thermogenic Innovation Complex 905 mg *
Next-Gen SLIMVANCE® Patented Biomatrix (Horseradish Tree (Moringa oleifera) Extract (leaf), Curry Tree (Murraya koenigii) Extract (leaf), Turmeric (Curcuma longa) Extract (root) (std. to curcuminoids)) 450 mg *
Unreal Energy™ Matrix (Caffeine Anhydrous, zumXR® Extended Release Caffeine, Infinergy™ DiCaffeine Malate 200 mg *
Guarana (Guarana cupana) Extract (seeds) 50 mg *
Yerba Mate (llex paraguariensis) Extract (leaf) 50 mg *
White Willow (Salix alba) Extract (bark) 50 mg *
TeaCrine® Theacrine (Tetramethyluric Acid) 50 mg *
Capsimax® Cayenne (Capsicum annuum) Extract (fruit) 25 mg *
Yohimbe (Pausinystalia yohimbe) Extract (bark) (std. for yohimbine) 25 mg *
BioPerine® Black Pepper Fruit Extract 5 mg *
Bioavailability Fair

Absorption Rating

  • Niacin (as Niacinamide) Good
  • Vitamin B6 (as Pyridoxine HCl) Fair
  • Vitamin B12 (as Cyanocobalamin) Fair
  • Next-Gen SLIMVANCE® Patented Biomatrix (Horseradish Tree (Moringa oleifera) Extract (leaf), Curry Tree (Murraya koenigii) Extract (leaf), Turmeric (Curcuma longa) Extract (root) (std. to curcuminoids)) Poor
  • Unreal Energy™ Matrix (Caffeine Anhydrous, zumXR® Extended Release Caffeine, Infinergy™ DiCaffeine Malate Poor
  • Guarana (Guarana cupana) Extract (seeds) Fair
  • Yerba Mate (llex paraguariensis) Extract (leaf) Fair
  • White Willow (Salix alba) Extract (bark) Fair
  • TeaCrine® Theacrine (Tetramethyluric Acid) Fair
  • Capsimax® Cayenne (Capsicum annuum) Extract (fruit) Good
  • Yohimbe (Pausinystalia yohimbe) Extract (bark) (std. for yohimbine) Fair
  • BioPerine® Black Pepper Fruit Extract Good
Other Ingredients Very Poor

Fillers & Additives

  • Microcrystalline Cellulose
  • Gelatin
  • Silicon Dioxide
  • Magnesium Stearate
  • Potassium aluminum silicate
  • Titanium Dioxide High
  • Fd&c yellow # 6 High
  • Fd&c red # 40 High
  • FD&C Blue #1 Medium
Efficacy Fair

Dosage Analysis

  • Niacin (as Niacinamide) 10 mg Under-dosed
  • Vitamin B6 (as Pyridoxine HCl) 7 mg Effective
  • Vitamin B12 (as Cyanocobalamin) 12 mcg Effective
  • Guarana (Guarana cupana) Extract (seeds) 50 mg Under-dosed
  • Yerba Mate (llex paraguariensis) Extract (leaf) 50 mg Under-dosed
  • White Willow (Salix alba) Extract (bark) 50 mg Under-dosed
  • TeaCrine® Theacrine (Tetramethyluric Acid) 50 mg Effective
  • Capsimax® Cayenne (Capsicum annuum) Extract (fruit) 25 mg High
  • Yohimbe (Pausinystalia yohimbe) Extract (bark) (std. for yohimbine) 25 mg Effective
  • BioPerine® Black Pepper Fruit Extract 5 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Niacin (as Niacinamide) 10 mg 63%
Vitamin B6 (as Pyridoxine HCl) 7 mg 412%
Vitamin B12 (as Cyanocobalamin) 12 mcg 500%
Energy and Weight Loss Thermogenic Innovation Complex 905 mg *
Next-Gen SLIMVANCE® Patented Biomatrix (Horseradish Tree (Moringa oleifera) Extract (leaf), Curry Tree (Murraya koenigii) Extract (leaf), Turmeric (Curcuma longa) Extract (root) (std. to curcuminoids)) 450 mg *
Unreal Energy™ Matrix (Caffeine Anhydrous, zumXR® Extended Release Caffeine, Infinergy™ DiCaffeine Malate 200 mg *
Guarana (Guarana cupana) Extract (seeds) 50 mg *
Yerba Mate (llex paraguariensis) Extract (leaf) 50 mg *
White Willow (Salix alba) Extract (bark) 50 mg *
TeaCrine® Theacrine (Tetramethyluric Acid) 50 mg *
Capsimax® Cayenne (Capsicum annuum) Extract (fruit) 25 mg *
Yohimbe (Pausinystalia yohimbe) Extract (bark) (std. for yohimbine) 25 mg *
BioPerine® Black Pepper Fruit Extract 5 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

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

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Potassium aluminum silicate Unknown
Titanium Dioxide Caution

Used as a whitening agent in tablet coatings and capsules.

Fd&c yellow # 6 Unknown
Fd&c red # 40 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.

$32$31$30$29$28 Mar 12 $30.00
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
Force Factor

Founded 2009 · Boston, Massachusetts, USA · 219 products · forcefactor.com/

Certifications

1 certification
Consumerlab Verified Source

Transparency

3 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source

Violation History

4 incidents
Lawsuit Misrepresenting the dosage amounts of certain supplements on their product labels.2024Source
Prop 65 Lead2023-08-08Source
Lawsuit Deceptive marketing and illegal billing practices.2020Source
Lawsuit Misleadingly marketing Force Factor Pure BCAA as a dietary supplement that increases protein synthesis to build muscle.2018Source
Related Supplements
Frequently Asked Questions
Is Force Factor LeanFire® with Next-Gen Slimvance, 60 Capsules a good supplement?

Force Factor LeanFire® with Next-Gen Slimvance, 60 Capsules received a product quality score of 52/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. The product contains 13 active ingredients with 30 servings per container. Of the 9 inactive ingredients, 4 are rated safe and 2 are flagged for review. The manufacturer, Force Factor, holds a brand trust score of 67/100 with 1 verified certifications including Consumerlab.

What are the ingredients in Force Factor LeanFire® with Next-Gen Slimvance, 60 Capsules?

Force Factor LeanFire® with Next-Gen Slimvance, 60 Capsules contains 13 active ingredients: Niacin (as Niacinamide) (10 mg), Vitamin B6 (as Pyridoxine HCl) (7 mg), Vitamin B12 (as Cyanocobalamin) (12 mcg), Energy and Weight Loss Thermogenic Innovation Complex (905 mg), Next-Gen SLIMVANCE® Patented Biomatrix (Horseradish Tree (Moringa oleifera) Extract (leaf), Curry Tree (Murraya koenigii) Extract (leaf), Turmeric (Curcuma longa) Extract (root) (std. to curcuminoids)) (450 mg), Unreal Energy™ Matrix (Caffeine Anhydrous, zumXR® Extended Release Caffeine, Infinergy™ DiCaffeine Malate (200 mg), and 7 more. Notable high-dose ingredients include Vitamin B6 at 412% DV, Vitamin B12 at 500% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Force Factor LeanFire® with Next-Gen Slimvance, 60 Capsules safe to take?

Force Factor LeanFire® with Next-Gen Slimvance, 60 Capsules has been analyzed for ingredient safety across all its components. Of 9 inactive ingredients, 4 are rated safe. 2 ingredients are flagged for review: Titanium Dioxide, 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.

Is Force Factor a trustworthy supplement brand?

Force Factor receives a brand trust score of 67/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2009 and headquartered in Boston, Massachusetts, USA, the company offers 219 products in their lineup. They hold 1 verified certifications including Consumerlab. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Force Factor has 4 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.