ProveIt Supplements

Independent, evidence-based supplement analysis.

✓ Not Sponsored

✓ No Paid Reviews

✓ Science-Based

Company

  • About Us
  • Our Methodology
  • Contact
  • Blog
  • Authors

Legal

  • Privacy Policy
  • Terms of Service
  • Medical Disclaimer
  • Affiliate Disclosure

Resources

  • All Categories
  • Ingredient Database
  • Browse Supplements
  • FAQ

© 2025 ProveIt Supplements. All rights reserved.

Medical Disclaimer: The information provided is for educational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen.

Prove It
Browse SupplementsBlogAuthorsAboutMethodologyFAQ
Get Your Personalized Supplement StackSupplement Stack Quiz
Menu
HomeBrowse SupplementsBlogAuthorsAboutMethodologyFAQ
Fastin

Fastin

Hi-Tech Pharmaceuticals

#Energy Booster
49
Safety35
Efficacy62
Transparency58
Based on Examine, Wikipedia, and 23 other sources

Overview

Fastin offers a blend of ingredients known to have stimulant and thermogenic effects, which can contribute to energy and weight loss. However, the product's use of a proprietary blend for most active ingredients prevents consumers from knowing the exact dosages, making it difficult to assess if the ingredients are present at clinically effective levels. Caffeine's dose is disclosed (100mg per tablet), which is moderately effective for energy and focus. The lack of transparency for other potent compounds like yohimbine and DMAA raises concerns about both efficacy and safety.

The Good

Moderate dose of Caffeine may boost energy and focus.

Ingredients like Yohimbine and Synephrine are associated with fat loss and thermogenesis.

Potential for mild mood enhancement due to phenylethylamine derivatives.

The Bad

Proprietary blend conceals dosages of most active ingredients, raising concerns about efficacy and safety.

Contains 1,3-Dimethylamine HCl (DMAA), an ingredient banned or highly cautioned against due to serious health risks.

Includes Methylsynephrine HCl (oxilofrine), an illegal and unsafe dietary supplement ingredient.

Is it for you?

Best For: Individuals seeking weight loss and energy enhancement, those tolerant to stimulants

Skip If: Sensitive to caffeine, have high blood pressure, or are on other medications

Ingredients Analysis

Proprietary Blend (Non-Nutrient/Non-Botanical)

245 mg

Phenylethylamine Hcl

Methylsynephrine Hcl

Theobromine Anhydrous

1;3-Dimethylamine Hcl

Synephrine

N-Methyl-Beta-Phenylethylamine

Yohimbine Hcl

Caffeine Anhydrous

100 mg

How to Use

Take one serving before desired effects, do not exceed recommended dosage. Not for use longer than 8 weeks.

Frequency:

Daily

Best Time:

Morning

When:

As directed, typically before activity

Who Should Use This

Best For:

Individuals seeking weight loss and energy enhancement, those tolerant to stimulants

Similar Products

Vetri-Science® Laboratories Healthymouth™ Natural Zeolites for Dogs & Cats Dental Health Supplement by Vetriscience®

Vetri-Science® Laboratories Healthymouth™ Natural Zeolites for Dogs & Cats Dental Health Supplement

Vetriscience®

COLLAGEN PRO Pasture Raised Peptides UNFLAVORED DIETARY SUPPLEMENT by GNARLY®

COLLAGEN PRO Pasture Raised Peptides UNFLAVORED DIETARY SUPPLEMENT

GNARLY®

Muscle memory Creatine Powder supplement by Ora®

Muscle memory Creatine Powder supplement

Ora®

Amazing Formulas MSM (Methylsulfonylmethane) Supplement by Amazing Nutrition

Amazing Formulas MSM (Methylsulfonylmethane) Supplement

Amazing Nutrition

Fiber GDX Dietary Supplement Fiber / Orange Flavor by THE PAUSENUTRITION®

Fiber GDX Dietary Supplement Fiber / Orange Flavor

THE PAUSENUTRITION®

PROSTATE HEALTH SUPPLEMENT by OFFSTATE

PROSTATE HEALTH SUPPLEMENT

OFFSTATE

Recommended Articles

Top Ingredients for Healthy Blood Sugar Levels

Top Ingredients for Healthy Blood Sugar Levels

Dietary fibers, cinnamon, and specific supplements help maintain healthy blood sugar levels, crucial for diabetes management.

Optimal Berberine Dosing Guide

Optimal Berberine Dosing Guide

Optimal berberine intake involves 500-1500 mg/day, split 2-3 times, ideally 30-60 minutes before meals, tailored to individual needs.

Avoid These Ingredients Before Surgery

Avoid These Ingredients Before Surgery

Certain ingredients, especially supplements that affect blood clotting, should be avoided before surgery to prevent complications.

Avoid These Ingredients with Alcohol

Avoid These Ingredients with Alcohol

Certain medications and foods can cause serious health issues when mixed with alcohol.