Concomitant caution drug
Norrevo lock
Anticonvulsants (phenobarbital, phenytoin, primidone, carbamazepine)
HIV Protease Inhibitor (Ritnavir)
Non-nucleoside reverse transcriptase inhibitor (efavirenz, rifabutin, rifampicin)
Low-dose pills (tricular)
Corticosteroids (enhanced action)
Prednisolone (enhanced action)
Tricyclic antidepressant (enhanced action)
Imipramine (enhanced action)
Selegiline hydrochloride (enhanced action)
Cyclosporine (enhanced action)
Omeprazole (enhanced action)
Theophylline (increased blood concentration)
Tizanidine hydrochloride (increased blood concentration)
Boligonazole (increased blood concentration)
Rifapicins (decreased effect of this drug) (increased incidence of genital bleeding)
Barbituric acid derivative (attenuation of the effect of this drug) (increased incidence of genital bleeding)
Phenobarbital (attenuation of the effect of this drug) (increased incidence of irregular genital bleeding)
Hydantoin antiepileptic drug (attenuation of the effect of this drug) (increased incidence of genital bleeding)
Phenytoin sodium (attenuation of the effect of this drug) (increased incidence of genital bleeding)
Carbamazepine (decreased effect of this drug) (increased incidence of genital bleeding)
Bosentan (decreased effect of this drug) (increased incidence of genital bleeding)
Modafinil (decreased effect of this drug) (increased incidence of genital bleeding)
Topiramate (decreased effect of this drug) (increased incidence of genital bleeding)
Tetracycline antibiotics (attenuated effect of this drug) (increased incidence of genital bleeding)
Penicillin antibiotics (attenuation of the effect of this drug) (increased incidence of genital bleeding)
Ampicillin hydrate (attenuation of the effect of this drug) (increased incidence of genital bleeding)
Terbinafine hydrochloride (abnormal menstruation when used in combination with progesterone / estrogen)
Gn-RH derivative (attenuates action)
Busereline acetate (attenuates action)
Hypoglycemic agent (attenuates action)
Insulin preparation (attenuates action)
Sulfonylureas (attenuates action)
Sulfonamide drug (attenuates action)
Biguanide-based preparation (attenuates the action)
Lamotrigine (low blood concentration)
Morphine (low blood concentration)
Salicylic acid (decreased blood concentration)
Acetaminophen (decreased blood concentration) (increased blood concentration of this drug)
Nelfinavir mesylate (attenuation of the effect of this drug)
Ritonavir (attenuation of the effect of this drug)
Darunavir (attenuation of the effect of this drug)
Lopinavir / ritonavir combination drug (attenuation of the effect of this drug)
Nevirapine (attenuation of the effect of this drug)
Fosamprenavir (attenuation of the effect of this drug)
Atazanavir (increased blood concentration of this drug)
Etravirine (increased blood concentration of this drug)
Fluconazole (increased blood concentration of this drug)
Voriconazole (increased blood concentration of this drug)