Estrogens are relatively safe in overdose. During pregnancy, levels of<unk> increase to very high concentrations that are as much as 100-fold normal levels. In late pregnancy, the body produces and secretes approximately 100 mg of estrogens, including<unk>  estrone, and estriol, per day. Doses of<unk> of as high as 200 mg per day by intramuscular injection for several weeks have been administered to humans in studies. Serious adverse effects have not been described following acute overdose of large doses of estrogen- and progestogen-containing birth control pills by small children. Symptoms of estrogen overdosage may include nausea, vomiting, bloating, increased weight, water retention, breast tenderness, vaginal discharge, vaginal bleeding, heavy legs, and leg cramps. These side effects can be diminished by reducing the estrogen dosage.
Estradiol 
Estrogen
Estrogen 
Alfatradiol
Androgen
17α-Estradiol
Progesterone 
Progesterone