Clomid is the commonly referenced brand name for the drug clomiphene citrate. It is not an anabolic steroid, but a prescription drug generally prescribed to women as a fertility aid.
In men however, the elevation in both follicle stimulating hormone and (primarily) luteinizing hormone will cause natural testosterone production to increase. This effect is especially beneficial to the athlete at the conclusion of a steroid cycle when endogenous testosterone levels are depressed. If endogenous testosterone levels are not brought beck to normal, a dramatic loss in size and strength is likely to occur once the anabolics have been removed. This is due to the fact that without testosterone (or other androgens), the catabolic hormone cortisol becomes the dominant force affecting muscle protein synthesis (quickly bringing about a catabolic metabolism). Often referred to as the post-steroid crash, it can quickly eat up much of your newly acquired muscle. Clomid® can play a crucial role in preventing this crash in athletic performance.