Coadministration of HMG-CoA reductase inhibitors, atorvastatin and rosuvastatin, does not affect contraceptive efficacy of centchroman.

OBJECTIVE: The study aimed to investigate the effect of concomitant use of atorvastatin or rosuvastatin on the pharmacokinetic and pharmacodynamic profile of centchroman, a non-steroidal female oral contraceptive. METHODS: A rat model was used to predict pharmacokinetic drug-drug interactions between centchroman and atorvastatin or rosuvastatin. A dried blood spot sampling technique followed by liquid chromatography-tandem mass spectrometry detection was employed for analysis of the pharmacokinetic interaction study samples. Sperm-positive female rats were investigated for postcoital contraceptive activity of centchroman with or without coadministration of atorvastatin or rosuvastatin. RESULTS: Coadministration of atorvastatin or rosuvastatin may increase the systemic availability of centchroman in blood, but it does not affect the pharmacodynamic profile of centchroman. CONCLUSION: Atorvastatin or rosuvastatin may be prescribed with centchroman without compromising the contraceptive efficacy of centchroman.