It's tempting to believe there are magic potions and concoctions that can enhance your performance. Having this mentality is counter-productive to your progress. Focus your energy on the following and you'll be much better off.
- Hard work in the gym
- Excellent quality nutrition (a paleolithic hunter-gatherer modeled diet is a great start)
- Quality rest, deep sleep
Update: Stronger Faster Healthier has introduced a product line with the most superior ingredients and quality available. Their whey protein is from A2 milk, which is from grass fed, hormone and antibiotic-free, free ranging cattle. Their Super Omega fish oil is by far the most pure and potent on the market. These guys are industry leaders. As the only supplements I really recommend I have made these available in the gym or in the online store.