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
Osta RX

Osta RX

IronMagLabs

#Other
55
Safety40
Efficacy70
Transparency75
Based on Examine, Wikipedia, and 23 other sources

Overview

Osta RX is a supplement containing Ostarine (MK-2866), a selective androgen receptor modulator (SARM) often used for muscle growth and fat loss.

Is it for you?

Best For: Experienced bodybuilders, individuals seeking muscle gain (with caution)

Skip If: You are under 21, have liver or heart conditions, or are subject to drug testing.

Ingredients Analysis

((2s)-3-(4-Cyanophenoxy)-N-[4-Cyano-3-(Trifluoromethyl)Phenyl]-2-Methylpropanamide)

6.5 mg

Proprietary Blend

224 mg

Mucuna Pruriens Extract

Tribulus Extract

Longjack Extract

Fenuside

Horny Goat Extract

Vitamin B12

Pyridoxal 5-Phosphate

How to Use

Typically taken once daily, following dosage instructions on the label. Often used in cycles.

Frequency:

Daily

Best Time:

Morning

When:

With or without food

Who Should Use This

Best For:

Experienced bodybuilders, individuals seeking muscle gain (with caution)

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®

LOWAT Proprietary Blend by Swanson Best Weight-Control Formulas

LOWAT Proprietary Blend

Swanson Best Weight-Control Formulas

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®

Recommended Articles

Top Men's Vitality Supplements & Ingredients

Top Men's Vitality Supplements & Ingredients

Vitamin D, Zinc, Magnesium, and L-arginine are crucial for men's vitality, supported by scientific evidence.

Top Metabolism-Boosting Ingredients for Weight Loss

Green tea and capsaicin are key ingredients that scientifically aid in weight management by enhancing metabolism.

Green Tea Extract & Fat Loss: 2025 Insights

Green Tea Extract & Fat Loss: 2025 Insights

Green tea extract can aid in fat loss through thermogenesis and fat oxidation, even without exercise, but should be used with caution.

Zinc Lozenges: Cold Reduction & Immunity Boost?

Zinc Lozenges: Cold Reduction & Immunity Boost?

Zinc lozenges can reduce cold durations by up to 33% and enhance immunity when taken correctly.