Proviron is a purely androgenic steroid with no anabolic qualities. The drug was used both as an anti-estrogen that “prevents” estrogen from being produced through the aromatization of sex steroids, and for its hardening effect upon musculature. Unlike Nolvadex (which only keeps estrogen from bonding with its receptors by blocking them), Proviron actually prevents the formation of estrogen. Due to lower estrogen levels, athletes retained less water and prevented (for the most part) the formation of gyno and female pattern fat deposits.
Oxandrolone was often refereed to as an all purpose oral AAS. This drug was once marketed under the product name (still commonly used trade name) of Anavar. It has the unique quality of significantly stimulating (more than other AAS) the synthesis of phosphocreatine in muscle cells which in turn provides faster regeneration of, and a distinct elevation in, ATP. Of course all AAS have this effect to some extent. Oxandrolone is simply unmatched in this aspect.
Nolvadex is a drug commonly referred to as an anti-estrogen. This would suggest less or no estrogen is produced due to the drug’s actions as in the case of Teslac. Actually, Nolvadex is an estrogen antagonist, meaning it competes with estrogen at estrogen receptor- sites.
Testosterone was generally toted as the big daddy of injectable steroids. No other steroid was consistently reported to bring such high returns as quickly in weight gain and strength increases. Due to its high anabolic/high androgenic effects, many athletes used this drug in an off-season mass cycle.