Hormone Replacement Therapy eases the symptoms of menopause by supplementing the levels of hormones which the body can produce naturally. Buy Premarin Tablet 0.625 mg contain conjugated oestrogens, which are natural forms of oestrogen. If you have had a hysterectomy, oestrogen is the only hormone you will be required to replace. If you have not had your uterus removed, you will be prescribed a progestogen medicine alongside Premarin. This is because when oestrogen levels alone are increased, the lining of the uterus will grow excessively.