The FDA wants to ban the Tribestan , and we haven`t get in any cence October, the reason is that Tribestan has a pulished study, and it shows that increases sperm count. I konw that 90% of the tribulus on the market is useless and those are OK with FDA. Long as you have a product and it dozn`t work is OK with the FDA. The real tribulus extract is over $500 per kg. The one it has been in use on the market is from $60 to $120 per kg.