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Levonorgestrel is a hormonal medication which is used in a number of birth control methods. [3] [7] It is combined with an estrogen to make combination birth control pills. [8]As an emergency birth control, sold under the brand names Plan B One-Step and Julie, among others, it is useful within 72 hours of unprotected sex.
All contain an estrogen, ethinylestradiol or mestranol, [1] [2] in varying amounts, and one of a number of different progestogens. (Regarding the estrogen, the inactive 3-methyl ether of ethinylestradiol, which must be metabolized by the liver into the active ethinylestradiol; 50 μg of mestranol is equivalent to only 35 μg of ethinylestradiol and should not be used when high-dose [50 μg ...
When using Mirena, about 0.1% of the maternal dose of levonorgestrel can be transferred via milk to the nursed infant. [40] A six-year study of breastfed infants whose mothers used a levonorgestrel-only method of birth control found the infants had increased risk of respiratory infections and eye infections, though a lower risk of neurological ...
The ovulation-inhibiting dose of norgestrel appears to be greater than 75 μg/day, as ovulation occurred in 50 to 75% of cycles with this dosage of norgestrel in studies. [17] The ovulation-inhibiting dosage of levonorgestrel, which is twice as potent as norgestrel, is approximately 50 to 60 μg/day.
Norgestimate is a rapidly and completely converted prodrug, mainly of norelgestromin (17β-deacetylnorgestimate or levonorgestrel 3-oxime), but also of levonorgestrel (3-keto-17β-deacetylnorgestimate) to a lesser extent (22 ± 6% of an administered dose or about 40–70 μg) [2] and of levonorgestrel acetate (levonorgestrel 17β-acetate) in ...
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BMI has over 100 years of history as a standard health assessment tool. But while BMI can tell you where your weight falls compared to what’s “normal,” it fails to account for other critical ...
Oral potencies of progestogens [data 1]; Compound Doses for specific uses (mg/day) [a] OID TFD MDT BCPD ECD; Cycle Daily Allylestrenol: 25: 150–300 – 30 – – Bromoketoprogesterone [b]