Comparative Pharmacology
Head-to-head clinical analysis: GILDESS 1 5 30 versus TRI LO MILI.
Peer-Reviewed Evidence
Head-to-head clinical analysis: GILDESS 1 5 30 versus TRI LO MILI.
GILDESS 1.5/30 vs TRI-LO-MILI
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Combination of estrogen (ethinyl estradiol) and progestin (desogestrel) that inhibits gonadotropin release, suppressing ovulation, increasing cervical mucus viscosity, and altering endometrial morphology.
Combination oral contraceptive: ethinyl estradiol suppresses gonadotropin release via negative feedback on the hypothalamic-pituitary axis; norgestimate binds to progesterone receptors, inhibiting ovulation and altering cervical mucus and endometrial receptivity.
One tablet orally once daily at the same time each day.
One tablet orally once daily for 21 days, followed by 7 days of placebo.
None Documented
None Documented
Ethinylestradiol: terminal half-life 13-17 hours (mean 15 h). Desogestrel active metabolite 3-keto-desogestrel: terminal half-life 23-28 hours (mean 25 h). Clinical: steady-state achieved by cycle day 7-10; missed pill instructions based on half-life.
Terminal elimination half-life: 20-24 hours; allows once-daily dosing for contraceptive efficacy.
Renal: ~55-60% as ethinylestradiol glucuronide and sulfate conjugates; ~40% as desogestrel metabolites (largely as 3-keto-desogestrel glucuronide). Fecal: ~30-35% of desogestrel metabolites; <5% for ethinylestradiol. Biliary: minor for both.
Renal: approximately 50% as metabolites; biliary/fecal: approximately 40% as metabolites; 10% unchanged in urine.
Category C
Category C
Oral Contraceptive
Oral Contraceptive