GNC Pro Performance Thermo Burst Hardcore Review

Editor's Review: 3.5 / 5.0

What You Should Know

Click Here To See Our Highest Rated Review

GNC Pro Performance Thermo Burst Hardcore claims to deliver energy, burn 12 times more calories following workouts and convert fatty acids into energy. All this is advertised to burn an extra 278 calories after each workout, improve endurance and enhance performance.

List Of Ingredients

  • 400 MG Caffeine
  • MicronizedL-Carnitine
  • 100% or more of daily allowance of vitamins C and B6, Niacin and Panthonetic Acid
  • Ginger root
  • Yerba Mate Extract
  • Guarana Seed Extract
  • Proprietary Thermogenic Blend
  • Capsimax
  • Pre-Workout Xplosion Blend
  • Black Tea Leaves Extract
  • Dill Weed Extract
  • Grape Seed Extract

Product Features

GNC Pro Performance Thermo Burst Hardcore contains a proprietary blend of vitamins, extracts and caffeine formulated to burn fat. Additional claims promote heart health, but the antioxidants and other heart-healthy ingredients are present only in small, ineffective amounts. The pills come in quantity of 90, or a 30-day supply, for $17.99.

See Our Featured Diet


  • The pills are wheat, gluten, yeast, soy, and dairy free, so they are unlikely to cause an allergic reaction.
  • The GNC web site is clean and easy to navigate, making ordering easy. You can also buy the product offline at GNC stores.


  • Most of the ingredients in this product are not associated with weight loss.
  • No outside scientific studies have been conducted to verify GNC’s claims.
  • GNC Pro Performance Thermo Burst Hardcore contains a large dosage of caffeine, which is well known to have side effects, including jitters and acid reflux.
  • Consumer reviews caution against drinking alcohol while taking this product.
  • The main active ingredient, l-carnitine, is not proven effective for weight loss.


We cannot recommend GNC Pro Performance Thermo Burst Hardcore without the benefit of scientific research. The study cited on the site was conducted by the manufacturer with a small number of participants. The results of the GNC study are not published. The individual ingredients have not been tested by an independent organizatio. High doses of caffeine can be dangerous to people with certain conditions.

Instead of buying GNC Pro Performance Thermo Burst Hardcore , we recommend a sensible diet combined with a moderate exercise plan. Planning a well-balanced, healthy diet is essential to maintaining good health as you lose weight. Lifestyle changes are essential for long-term success. In the short term, it can be frustrating to get the weight loss ball rolling. Try a fat burner from a source you can trust and add an appetite suppressant to control cravings and help you stay on the health wagon. When you start to see results, motivation won’t be a problem.

GD Star Rating

Have a comment or question about GNC Pro Performance Thermo Burst Hardcore?

2 User Reviews about GNC Pro Performance Thermo Burst Hardcore

  • 1

    i love thermo burst hardcore iv lost so much weigt 20 lbs in 6 months almost time for wedding dress shopping almost back down to a size 9 pants was at a 16 after our son was born i works for me drink water dont snck on yucky food and work harder for better results good luck to you all


  • 2

    What is the effect of alcohol while taking thermo burst?