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Colesevelam Oral Suspension and Microgestin Fe 1/20

Determining the interaction of Colesevelam Oral Suspension and Microgestin Fe 1/20 and the possibility of their joint administration.

Check result:
Colesevelam Oral Suspension <> Microgestin Fe 1/20
Relevance: 21.06.2022 Reviewer: Shkutko P.M., M.D., in

In the database of official manuals used in the service creation an interaction registered by statistical results of studies was found, which can either lead to negative consequences for the patient health or strengthen a mutual positive effect. A doctor should be consulted to address the issue of joint drug administration.

Consumer:

Using colesevelam together with ethinyl estradiol may decrease the effects of ethinyl estradiol. Ethinyl estradiol should be administered at least 4 hours before colesevelam. If your doctor does prescribe these medications together, you may need a dose adjustment or special test to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Professional:

ADJUST DOSING INTERVAL: Colesevelam may decrease the gastrointestinal absorption of contraceptive hormones. A 24% reduction in peak plasma concentration (Cmax) and systemic exposure (AUC) has been reported for ethinyl estradiol (0.035 mg), and a 20% reduction in Cmax has been reported for norethindrone (1 mg).

MANAGEMENT: Oral contraceptives containing ethinyl estradiol and norethindrone should be administered at least 4 hours before the colesevelam dose. The same precaution may be applicable to other contraceptive hormones, although data are lacking.

References
  • "Product Information. Welchol (colesevelam)" Daiichi Sankyo, Inc., Parsippany, NJ.
Colesevelam Oral Suspension

Generic Name: colesevelam

Brand name: Welchol, Colesevelam Hydrochloride

Synonyms: Colesevelam

Microgestin Fe 1/20

Generic Name: ethinyl estradiol / norethindrone

Brand name: Blisovi 24 Fe, Blisovi Fe 15/30, Blisovi Fe 1/20, Estrostep Fe, Gildess 24 Fe, Gildess Fe 15/30, Gildess Fe 1/20, Junel Fe 15/30, Junel Fe 1/20, Junel Fe 24, Larin 24 Fe, Larin Fe 15/30, Larin Fe 1/20, Lo Loestrin Fe, Loestrin 24 Fe, Loestrin Fe 15/30, Loestrin Fe 1/20, Lomedia 24 Fe, Microgestin 24 Fe, Microgestin Fe 15/30, Microgestin Fe 1/20, Tarina Fe 1/20, Taytulla, Tilia Fe, Tri-Legest Fe, Blisovi 24 Fe, Femcon Fe, Kaitlib FE, Lo Minastrin Fe, Microgestin 24 Fe, Norinyl 1+35, Ortho-Novum 7/7/7, Tri-Norinyl, Zenchent, femhrt 05 mg/25 mcg, Fyavolv, Jevantique Lo, Jinteli, Femcon Fe, Generess FE, Loestrin 1/20, Ovcon 35, Brevicon

Synonyms: n.a.

In the course of checking the drug compatibility and interactions, data from the following reference sources was used: Drugs.com, Rxlist.com, Webmd.com, Medscape.com.