This creates a signal to the leydig cells in the testes, which in turn produce more testosterone and sperm. Normally with Clomiphene this took 5-15 days. Most started with 50-mg twice daily for about 5 days, then reduced intake to 50 mg once a day for 5-10 more days. Due to Clomiphene providing a fast response time, I felt it was often beneficial to use a dosage of 100 mg total daily for 5 days, mid-cycle during longer AAS protocols. This drug was seldom utilized for longer than 15 days continuously simply due to it being unnecessary. The goal was to normalize testosterone production post AAS cycle as quickly as possible so as to minimize post-cycle strength and mass loss. Not create dependency.
HCG was combined with Clomiphene (Clomid) sometimes, or Clomiphene was used after HCG administration. This is because Clomiphene acts by affecting the hypothalamus and pituitary (hypophysis) and regenerating the whole regulating system, while HCG only “imitates” LH, thus stimulating the leydig cells in the testes to produce natural testosterone.
As for toxicity and side effects, Clomid is considered a very asfe drug. Bodybuilders seldom report any problems but listed possible side effects do include hot flashes, nausea, dizziness, headaches and temporarily blurred vision. Such side effects usually only appear in females however, as they feel the effects of oestrogen manipulation much more readily than men.
Proviron 
