ProveIt Supplements

Independent, evidence-based supplement analysis.

✓ Not Sponsored

✓ No Paid Reviews

✓ Science-Based

Company

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

Legal

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

Resources

  • All Categories
  • Ingredient Database
  • Browse Supplements
  • FAQ

© 2026 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

No image available

Niacinamide

GNC Mega Men

#Other
63
Safety60
Efficacy65
Transparency80
Based on Examine, Wikipedia, and 23 other sources

Overview

This product delivers a substantial dose of niacin, which, at clinically relevant dosages, has demonstrated effectiveness in modulating lipid profiles and supporting energy metabolism. However, the potential for increased insulin resistance with long-term use, especially at this high dosage, may temper its overall effectiveness for some individuals.

The Good

Provides a high dose of niacin, potentially supporting cardiovascular health based on its effect on cholesterol levels.

Supports energy production by playing a key role in cellular metabolism.

May increase NAD+ levels, which are theorized to have beneficial effects on cognition and longevity.

The Bad

Potential for temporary flushing reaction due to high niacin content.

May cause gastrointestinal issues in some individuals.

High dose may increase insulin resistance.

Is it for you?

Best For: Individuals seeking skin health support, those looking to support cellular energy, general wellness

Skip If: You have liver disease, peptic ulcers, or are pregnant/nursing without medical advice.

Ingredients Analysis

Niacin

100 mg

How to Use

Take one capsule daily with food, or as directed by a healthcare professional.

Frequency:

Daily

Best Time:

Anytime

When:

With food

Who Should Use This

Best For:

Individuals seeking skin health support, those looking to support cellular energy, general wellness