20mg x 30 tablets Tamoxifen: (Boxes and brands may vary) Tamoxifen aka Nolvadex is a non-steroid agent that demonstrates potent anti estrogenic properties. The drug is technically an estrogen agonist/antagonist, which binds to estrogen receptors. With tamoxifen bound to this receptor, estrogen is blocked from exerting any action and an anti-estrogenic effect is achieved. High levels of estrogen can cause a number of unwanted side effects. A primary worry bring gynecmastia or the development of female breast tissue in men. This can be first noticed by the appearance of swelling or a small lump under the nipple. If left to progress it can turn into a very unsightly development of tissue, often irreversible occurrence without surgery. Estrogen can also lead to an increase of water retained in the body. The result here can be a notable loss of definition, the muscles beginning to look smooth and bloated due to the retention of subcutaneous fluid. This hormone is in fact the primary reason why women have a higher body fat percentage, and different fat distribution than men. Individuals sensitive to the effects of estrogen will usually be sure to have an anti-estrogen on hand. This will minimise the impact of related side effects of taking steroids. It is also of note that when estrogen and body fat levels are normal, administering Tamoxifen can increase the look of hardness and definition in the muscles. Since most anabolic/androgenic steroids will suppress endogenous testosterone production. Tamoxifen can help with this problem. It has also been shown to increase LH responsiveness to gonadotropin releasing hormone after time. while clomid slightly lowers this sensitivity as the drug is used for several weeks.