Remano, you will be able to take any supplements that have a zero total carbohydrate content. This means staying away from all your dextrose based pre-workout and intra-workout drinks as well as any energy drinks that have a high glucose content. I personally take Muscle Marinade as a pre-workout drink which provides an effective carb free energy boost at gym. I also take whey protein, flaxseed oil, multivitamins and glutamine. Another good addition to a keto-diet will be psylium husk which is a high fibre supplement taken to help the body's digestion/bowel movements while it is in a carb defficient state.
"Do or do not, there is no try" - Yoda
"It's simple, if it jiggles, it's fat."- Arnold Schwarzenegger
