ethinyl estradiol

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the radical HC≡C—, derived from acetylene.
ethinyl estradiol an estrogen derived from estradiol, used together with a progestational agent as a component of many oral contraceptives, in hormone replacement therapy, and as an antineoplastic in the treatment of advanced breast and prostate cancers; administered orally.

e·thy·nyl es·tra·di·ol

a semisynthetic derivative of 17β-estradiol; active by mouth, with a long half-life, it is among the most potent of known estrogenic compounds; used in oral contraceptive preparations.
Synonym(s): ethinyl estradiol

ethinyl estradiol

A synthetic estrogen derivative, C20H24O2, used in oral and other contraceptive preparations and in hormone replacement therapy, usually in combination with a progestin.

ethinyl estradiol

an estrogen.
indications It is prescribed in the treatment of postmenopausal breast cancer, menstrual cycle irregularities, prostatic cancer, and hypogonadism and for contraception and relief of menopausal vasomotor symptoms.
contraindications Thrombophlebitis, abnormal genital bleeding, known or suspected pregnancy, or known hypersensitivity to this drug prohibits its use.
adverse effects Among the more serious adverse effects are thrombophlebitis, embolism, and hypercalcemia. See also estrogen.

Ethinyl estradiol

A semi-synthetic derivative of estradiol—an estrogen or female sex hormone—used in birth control pills and combined ECPs.

ethinyl estradiol

(eth´inil es´trədī´ol),
n brand names: Estinyl;
drug class: nonsteroidal synthetic estrogen;
action: affects release of pituitary gonadotropins, inhibits ovulation, promotes adequate calcium use in bone structure;
uses: menopause, prostatic cancer, breast cancer, postmenopausal osteoporosis.
References in periodicals archive ?
Efficacy, acceptability and tolerability of the combined contraceptive ring, NuvaRing, compared with an oral contraceptive containing 30 microg of ethinyl estradiol and 3 mg of drospirenone.
In a clinical trial, women taking a higher dose (35 [micro]g) of ethinyl estradiol (in a tricyclic preparation) were approximately 50% more likely to report bloating, breast tenderness, and nausea, compared with women taking a lower dose (20 [micro]g) (in a monophasic formulation).
In the most recent study, the participants were 16 healthy women who had taken a low-dose OC with 20 mcg ethinyl estradiol + 0.
Efficacy and safety of a low-dose monophasic combination oral contraceptive containing 100 microg levonorgestrel and 20 microg ethinyl estradiol (Alesse).
The oral contraceptive pills were well tolerated, and there appeared to be no difference between women who received the additional ethinyl estradiol during days 22-28 of their cycles and those who received placebo during that time.
The Yuzpe 2+2 method involves the administration of a total of 200 [micro]g of ethinyl estradiol and one mg of levonorgestrel (in two equally divided doses), compared to the previous high-dose estrogen methods.
Quartette(TM) features a 91-day regimen, with an 84-day ascending ethinyl estradiol dose designed to minimize unscheduled or breakthrough bleeding, followed by period-stabilizing 10 mcg ethinyl estradiol pills during the traditional seven-day hormone-free interval.
The company said Ethynodiol Diacetate and Ethinyl Estradiol Tablets were determined to be bioequivalent and, therefore, therapeutically equivalent to the reference listed drug, Zovia 1/50E-28 Tablets (Watson).
TAYTULLA will be commercially available in blister cards containing 24 oval, opaque, pale pink (active) soft gelatin capsules, each containing 1 mg norethindrone acetate and 20 mcg ethinyl estradiol, and 4 oval, opaque, maroon (nonhormonal placebo) capsules containing iron.
Pharmacokinetic studies of AG200-15 have shown that it delivers ethinyl estradiol (EE) and levonorgestrel equivalent to that seen with a 30-mg dose of EE and a 120-mg dose of levonorgestrel oral contraceptives.
has launched Altavera (levonorgestrel and ethinyl estradiol tablets), an oral contraceptive for women that is the genetic equivalent of the popular birth control pill Nordette.