There is a very gray area with supplements. Some recommend them (usually those who sell them), some don't (usually those who sell other stuff). I would like to know what is your experience with supplements of any kind. Vitamins, minerals, fish oils, ZMA, creatine, tribulus, glutamine, arginine, all the types. Steroids, if you want. And by experience I mean I somebody had clearly results, not just a placebo effect. My experience: vitamin D - before taking it, I was catching colds frequently. Now, for almost two years, I never got sick. http://www.iflscience.com/health-and-medicine/vitamind-d-supplements-prevent-cold-flu-infections/ zinc - the white spots on nails were gone after taking it. And that's it. creatine - I had a period when I took creatine, but I had an disorganized lifestyle (alcohol, not much of a nutrition, dehydrated, less sleep). I had the impression that it helped me when I was going to the gym. Maybe it was the placebo effect, I don't know. And I had severe constipation.... due to dehydratation, I guess. Now, I am taking it and a have a more organized lifestyle and it doesn't seem to work. fish oils - nothing lecithin - I took it and nothing glutamine - nothing mineral and vitamin complex - nothing magnesium chelate and vitamin B - nothing ginko biloba - nothing Also, I am taking Chondroitin, MSM and glucosamine now, I am still waiting.