I read a long time ago (years) that they believe creatine increased intracellular water which enhances strength and endurance. That's also one of the many beneficial things testosterone does. Of course, test does soooo much more
A long time ago? There are studies that have been done recently that say the same thing.
Among the studied and proven supplements (aside from AAS, DS, and PHs):
-Creatine
-Beta Alanine
-BCAAs/EAA
-Caffeine
-Protein
There are also many supplements that are FDA approved and although I'm not a fan of the FDA, I think this list is a nice tool to use:
1. Niacin (prescription Niaspan for cholesterol)
2. Galantamine (prescription Razadyne for dementia)
3. Fish Oil esters (prescription Omacor for cholesterol)
4. Ephedrine
5. L-DOPA (prescription for PD)
6. Zinc (otc use)
7. Magnesium (otc use)
8. L-Tryptophan (prescription as an amino acid formulation)
9. L-Glutamine (prescription for mucositis)
10. Special Green tea extract (prescription Veregen for genital warts)
11. Yohimbine
12. Caffeine (OTC as an alert aid)
13. Red rice yeast (prescription name Lovastatin for cholesterol)
14. NAC (prescription for liver damage)
15. Bile Acids (prescription for liver support)
16. Iron (prescription for low iron levels)
17. Cyanocobalamin (prescription for low B-12)
18. Hydroxocobalamin (prescription for Cyanide Poisoning)
19. Fiber (OTC for bowel issues)
20. TMG (prescription for homocystinuria)
21. Magnesium (OTC and Prescription for constipation & anticonvulsant)
22. Lithium (Prescription for Bipolar Disorder)
23. GHB (Prescription Xyrem for narcolepsy with cataplexy)
24. Potassum (prescription)
25. DMSO (Prescription for Interstitial cystitis)
26. Calcium (OTC and prescription)
27. DMAE salt (was sold as a prescription)
28. Iodine (prescription)
29. Folic acid (prescription)
30. Capsaicin (OTC for pain)
31. Thiamine (prescription as a formulation)
32. Riboflavin (prescription as a formulation)