Conditions exacerbated by fluid retention; hypercalcaemia, cerebrovascular diorders, coronary artery disease, gall bladder diseases; lipid effects; familial defects of lipoprotein metabolism. May increase BP, risk of venous thromboembolism, breast cancer, benign hepatic adenoma, endometrial cancer and size of preexisting uterine leiomyomata. Dosage should be reduced in hepatic impairment. Lactation. Child.
Lactation: Drug enters breast milk; use with caution
Indication
Moderate to severe vasomotor symptoms associated with menopause, Prophylaxis of osteoporosis in postmenopausal women, Hypogonadism, Atrophic vaginitis
Contra Indication
Hypersensitivity; undiagnosed vag bleeding; thrombophloebitis or thromboembolic disorders; breast carcinoma except in selected patients being treated for metastatic disease; oestrogen-dependent tumor; porphyria; pregnancy.
Dose
N/A
Side Effect
Anxiety,Abdominal cramping,Amenorrhea,Bloating,Breakthrough bleeding,Breast enlargement,Breast tenderness,Delayed ejaculation,Depression,Dry mouth,Headache,Hypertension,Impotency,Influenza,Leukorrhea,Melasma,Muscle cramps,Nausea,Nervousness,Peripheral edema,Polydipsia,Pruritus,Rash,Swelling,Spotting,Syncope,Toothache,Vaginal discomfort, vaginal erosion, vaginal ulceration, adherence of the vaginal ring to the vaginal wall (Estring),Vomiting,Weight changes
Pregnancy Category
Name :
Not Classified
Description
FDA has not yet classified the drug into a specified pregnancy category.
Mode of Action
Estradiol is a naturally occurring oestrogen. Oestrogens are responsible for the development and maintenance of the female reproductive system and secondary sexual characteristics. They modulate the pituitary secretion of gonadotrophins, LH and FSH through a negative feedback system.
Interaction
CYP1A2 and CYP3A4 inducers e.g. aminoglutethimide, carbamazepine, phenobarbital, and rifampin may decrease the effects of estradiol. May enhance the effects of hydrocortisone and prednisolone when used together.
Pregnancy Category Note
Pregnancy
Therapy not indicated for use in pregnancy; there are no data with use in pregnant women; however, epidemiologic studies and meta-analyses have not found an increased risk of genital or nongenital birth defects (including cardiac anomalies and limb-reduction defects) following exposure to combined hormonal contraceptives (estrogen and progestins) before conception or during early pregnancy
Lactation
Therapy not indicated for use in females of reproductive potential; estrogens present in human milk and can reduce milk production in breast-feeding females; reduction can occur at any time but is less likely to occur once breast-feeding is well- established
Adult Dose
Oral
Vulvar and Vaginal Atrophy in Menopause
Adult: 1-2 mg PO once daily for 3 weeks, followed by 1 week off
Prevention of osteoporosis:
0.5 mg PO once daily for 3 weeks, followed by 1 week off
Metastatic breast cancer:
10 mg PO q8hr for 3 months
Prostate cancer:
1-2 mg PO q8hr for ?3 months
Child Dose
N/A
Renal Dose
N/A
Administration
May be taken with or without food.
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