Drug General Information (ID: DDISV3Y6DZ)
  Drug Name Conjugated estrogens (topical) Drug Info Elagolix Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Estrogens Gonadotropin-Releasing Hormone Antagonists
  Structure

 Mechanism of Conjugated estrogens (topical)-Elagolix Interaction (Severity Level: Moderate)
     Attenuated pharmacological effects (Unspecific) Click to Show/Hide Mechanism Graph
      Drug Name Conjugated estrogens (topical) Elagolix
      Mechanism Decrease the therapeutic efficacy of elagolix Elagolix
      Key Mechanism Factor 1
Factor Name Pharmacodynamics
Factor Description Reduced pharmacological effects leading to insufficient efficacy and/or treatment failure.
      Mechanism Description
  • Attenuated pharmacological effects of  Conjugated estrogens (topical) when combined with Elagolix 

Recommended Action
      Management Women requiring contraception should be advised to use non-hormonal forms of contraception during treatment with elagolix and for one week after its discontinuation.

References
1 Product Information. Orilissa (elagolix). AbbVie US LLC, North Chicago, IL.
2 Schubert W, Eriksson U, Edgar B, Cullberg G, Hedner T "Flavonoids in grapefruit juice inhibit the in vitro hepatic metabolism of 17B-estradiol." Eur J Drug Metab Pharmacokinet 20 (1995): 219-24. [PMID: 8751044]
3 Weber A, Jager R, Borner A, et al. "Can grapefruit juice influence ethinyl estradiol bioavailability?" Contraception 53 (1996): 41-7. [PMID: 8631189]