With just eight weeks to build muscle and burn body fat, you’ll need all the help you can get. While the RHC workout program and diet will do most of the heavy lifting—no pun intended—you’ll want some essential supplements that will speed your progress. Try the following three products in this first month:


Whey protein is the fastest-digesting protein you’ll find, and it’s also rich in branched-chain amino acids (BCAAs). Getting a quick shot of BCAA-rich protein to your muscles is critical for muscle growth, especially before and after workouts. Taking a dose first thing in the morning to counteract muscle breakdowns after your nightlong fast is also a wise idea.

Anabolic Switch

After your workouts, you’ll need another dose of creatine, taurine, and beta-alanine to restock your muscles’ levels and keep your muscle cells big and full. You also need fast-digesting carbs to enhance recovery, aid muscle growth, and drive up insulin levels. Anabolic Switch achieves this with maltodextrin. It also provides an extra dose of essential amino acids

Black Powder

This pre-workout supplement will ramp up your energy levels and provide the stamina you need to train with all-out intensity. Black Powder delivers a potent dose of arginine in the forms of L-arginine alpha-ketoglutarate and L-arginine HCl, as well as Actinos², a whey peptide fraction that leads to more arginine being converted to nitric oxide (NO).

Find your MRI products at GNC


MRI has two other potent NO-boosters to consider pre-workout.

MRI NO2 Black

Black provides a healthy dose of L-arginine alphaketoglutarate to boost NO levels, and it also includes Actinos² to further enhance this process. Additionally, Black has the powerful antioxidant alpha-lipolic acid, which promotes muscle growth and aids fat loss.


Red includes four different kinds of arginine (L-arginine alpha-ketoglutarate, L-arginine HCL, Larginine pyroglutamate, and arginine ketoisocaproate), plus citrulline malate, which promotes NO production and has been shown to increase energy production in the body..