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Drospirenone

SLYND

What it isProgestin with antimineralocorticoid and antiandrogenic activity, used in combined and progestin-only pills.

Why this oneThe antiandrogenic action helps acne and PCOS, and the antimineralocorticoid effect reduces bloating.

What limits itHyperkalemia, so avoid with renal impairment or potassium-sparing drugs. A higher VTE signal than levonorgestrel-containing pills.

FDA-approved for

FDA label

FDA dosingPopulationStartTargetMax
Prevention of pregnancyFemales of reproductive potential (incl. postpubertal adolescents)1 tablet QD x 28-day cycle: 4 mg active QD days 1-24, then inert QD days 25-284 mg QD (days 1-24 of each 28-day pack)4 mg QD

Renal Contraindicated in renal impairment (hyperkalemia risk)

Hepatic Contraindicated in hepatic impairment or liver tumors

Instructions

Contraindications

Cautions

Adverse reactions

Pregnancy Discontinue if pregnancy occurs (no reason to use during pregnancy); epidemiologic data show little or no increased birth-defect risk from inadvertent oral progestin exposure in early pregnancy.

Lactation Negligible drospirenone in breast milk (relative infant dose 1.5%); no effects on breastfed infants anticipated; progestin-only pills generally without adverse effects on milk production or infant.

⚠ BOXED WARNING

Cost, est. cash$300–$2,500/month

Generic entry2031 est.

Classes and tags

Clinical profile

Therapeutic safety burden2 / 4
Overdose danger1 / 4
Weight-gain liability0 / 4
Sedation liability0 / 4
QT / Torsades0 / 4
Direct muscarinic antagonism0 / 4
Embryofetal risk0 / 4

Legacy pregnancy categoryNot assigned — PLLR-era drug

Defining liabilityVenous thromboembolism and hormone-related adverse effects; estrogen also lowers lamotrigine exposure.

Mechanism of action: Drospirenone ballicule

Drospirenone ballicule: receptor binding, kinetics and half-life diagram

Open Drospirenone in the interactive console ↗

Memory aids: mascots and interaction avatars

Drospirenone SLYND mascot mnemonic cartoon
“Slender Drosophila”
Bananas in bunches → ↑ serum potassium
Drospirenone CYP3A4 substrate avatar
CYP3A4 substrate

Open Drospirenone in the interactive console ↗