Estrace is a medication available in strengths of 1 mg, 2 mg, and 4 mg in sustained release (SR) form. It contains estradiol as the active ingredient, which helps alleviate menopause symptoms such as vaginal dryness and hot flashes. Estrace is manufactured by reputable companies and is also marketed under other brand names such as Edval, Progynova, Cameron, and Estrabet.