MuscleTech AlphaTest™ Thermo XTR, 90 Capsules supplement bottle
MuscleTech

AlphaTest™ Thermo XTR, 90 Capsules

What We Researched
13 active ingredients analyzed · 4 inactive ingredients decoded · 2 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
59
Product Score Poor
75
Brand Score Fair

Product Analysis

Transparency Very Good

Supplement Facts

IngredientAmount% DV
Vitamin B6 (as pyridoxine hydrochloride) 0.42 mg 25%
Vitamin B12 (as cyanocobalamin) 0.6 mcg 25%
Zinc (as zinc oxide) 11 mg 100%
Muscle Matrix
L-carnitine L-tartrate 1 g
KSM-66® ashwagandha extract (as Withania somnifera) (root)Standardized for 5% withanolides 600 mg
Thermo Fire Matrix
enfinity® (paraxanthine) 200 mg
aXivite® microencapsulated phenylcapsaicinSupplying 1% phenylcapsaicin 62.5 mg
CaloriBurn® grains of paradise extract(as Aframomum melegueta) (seed)Standardized for 12.5% 6-paradol 40 mg
Test and Vitality Matrix
Boron citrateSupplying 5% boron 200 mg
Longjack extract (as Eurycoma longifolia) (root) 75 mg
Bioavailability Fair

Absorption Rating

  • Vitamin B6 (as pyridoxine hydrochloride) Fair
  • Vitamin B12 (as cyanocobalamin) Fair
  • Zinc (as zinc oxide) Poor
  • Muscle Matrix Poor
  • L-carnitine L-tartrate Good
  • KSM-66® ashwagandha extract (as Withania somnifera) (root)Standardized for 5% withanolides Good
  • Thermo Fire Matrix Poor
  • enfinity® (paraxanthine) Fair
  • aXivite® microencapsulated phenylcapsaicinSupplying 1% phenylcapsaicin Good
  • CaloriBurn® grains of paradise extract(as Aframomum melegueta) (seed)Standardized for 12.5% 6-paradol Fair
  • Test and Vitality Matrix Poor
  • Boron citrateSupplying 5% boron Fair
  • Longjack extract (as Eurycoma longifolia) (root) Good
Other Ingredients Good

Fillers & Additives

  • Capsule (Hypromellose, Calcium Carbonate, FD&C Red No. 40) High
  • Stearic Acid
  • Silicon Dioxide
  • Magnesium Stearate
Efficacy Good

Dosage Analysis

  • Vitamin B6 (as pyridoxine hydrochloride) 0.42 mg Under-dosed
  • Vitamin B12 (as cyanocobalamin) 0.6 mcg Under-dosed
  • Zinc (as zinc oxide) 11 mg Effective
  • L-carnitine L-tartrate 1 g Effective
  • KSM-66® ashwagandha extract (as Withania somnifera) (root)Standardized for 5% withanolides 600 mg Effective
  • enfinity® (paraxanthine) 200 mg Effective
  • aXivite® microencapsulated phenylcapsaicinSupplying 1% phenylcapsaicin 62.5 mg High
  • CaloriBurn® grains of paradise extract(as Aframomum melegueta) (seed)Standardized for 12.5% 6-paradol 40 mg Effective
  • Longjack extract (as Eurycoma longifolia) (root) 75 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B6 (as pyridoxine hydrochloride) 0.42 mg 25%
Vitamin B12 (as cyanocobalamin) 0.6 mcg 25%
Zinc (as zinc oxide) 11 mg 100%
Muscle Matrix
L-carnitine L-tartrate 1 g
KSM-66® ashwagandha extract (as Withania somnifera) (root)Standardized for 5% withanolides 600 mg
Thermo Fire Matrix
enfinity® (paraxanthine) 200 mg
aXivite® microencapsulated phenylcapsaicinSupplying 1% phenylcapsaicin 62.5 mg
CaloriBurn® grains of paradise extract(as Aframomum melegueta) (seed)Standardized for 12.5% 6-paradol 40 mg
Test and Vitality Matrix
Boron citrateSupplying 5% boron 200 mg
Longjack extract (as Eurycoma longifolia) (root) 75 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Capsule (Hypromellose, Calcium Carbonate, FD&C Red No. 40) Unknown
Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Silicon Dioxide Unknown
Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$80$67$54$41$28 Mar 12 $69.99$38.00
iHerb
GNC

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

Brand Trust Report
MuscleTech

Founded 1995 · Oakville, Ontario, Canada · 49 products · muscletech.com/

Certifications

2 certifications
Consumerlab Verified Source
Labdoor Verified Source

Transparency

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

Violation History

3 incidents
Recall Muscle Tech Alpha Test2024-12-18Source
Lawsuit A class-action lawsuit was filed against Iovate Health Sciences alleging that their Platinum 100% BCAA 8:1:1 product's claims to promote muscle protein synthesis were false and misleading.2019Source
Lawsuit A class-action lawsuit alleged that Iovate Health Sciences USA Inc. misled consumers by 'protein spiking' its MuscleTech protein powders. The suit claimed the company included non-protein ingredients to inflate the protein content listed on the label.2015Source
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Frequently Asked Questions
Is MuscleTech AlphaTest™ Thermo XTR, 90 Capsules a good supplement?

MuscleTech AlphaTest™ Thermo XTR, 90 Capsules received a product quality score of 59/100 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 4 inactive ingredients, 2 are rated safe and 0 are flagged for review. The manufacturer, MuscleTech, holds a brand trust score of 75/100 with 2 verified certifications including Consumerlab, Labdoor.

What are the ingredients in MuscleTech AlphaTest™ Thermo XTR, 90 Capsules?

MuscleTech AlphaTest™ Thermo XTR, 90 Capsules contains 13 active ingredients: Vitamin B6 (as pyridoxine hydrochloride) (0.42 mg), Vitamin B12 (as cyanocobalamin) (0.6 mcg), Zinc (as zinc oxide) (11 mg), Muscle Matrix, L-carnitine L-tartrate (1 g), KSM-66® ashwagandha extract (as Withania somnifera) (root)Standardized for 5% withanolides (600 mg), and 7 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is MuscleTech AlphaTest™ Thermo XTR, 90 Capsules safe to take?

MuscleTech AlphaTest™ Thermo XTR, 90 Capsules 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 MuscleTech a trustworthy supplement brand?

MuscleTech receives a brand trust score of 75/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1995 and headquartered in Oakville, Ontario, Canada, the company offers 49 products in their lineup. They hold 2 verified certifications including Consumerlab, Labdoor. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: MuscleTech has 3 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.