Drug Interaction Report
2 potential interactions and/or warnings found for the following 2 drugs:
- ulipristal
- zafirlukast
Interactions between your drugs
zafirlukast ulipristal
Applies to: zafirlukast, ulipristal
Coadministration with CYP450 3A4 inhibitors may increase the plasma concentrations of ulipristal, which is primarily metabolized by the isoenzyme. The clinical relevance is unknown.
References (2)
- Cerner Multum, Inc. "UK Summary of Product Characteristics."
- (2022) "Product Information. Ella (ulipristal)." Afaxys Inc.
Drug and food interactions
zafirlukast food
Applies to: zafirlukast
ADJUST DOSING INTERVAL: Food may reduce the oral absorption and bioavailability of zafirlukast. In two separate studies, one using a high-fat and the other a high-protein meal, administration of zafirlukast with food reduced the mean bioavailability by approximately 40%.
MANAGEMENT: To ensure maximal oral absorption, zafirlukast should be administered at least 1 hour before or 2 hours after meals.
References (1)
- (2001) "Product Information. Accolate (zafirlukast)." Astra-Zeneca Pharmaceuticals
Therapeutic duplication warnings
No duplication warnings were found for your selected drugs.
Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.
Report options
- Switch to consumer interaction data
- Email this report to a friend, doctor, or patient
- Ask questions, find answers
Drug Interaction Classification
| Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
| Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
| Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. | |
| No interaction information available. |
See also:
Mirena
Mirena (levonorgestrel) is a plastic intrauterine device placed in the uterus and is used to ...
Botox
Botox is used for cosmetic purposes and to treat overactive bladder symptoms, urinary incontinence ...
Aviane
Aviane is used as contraception to prevent pregnancy. Includes side effects, interactions and ...
Kyleena
The Kyleena IUD is placed in your uterus by your healthcare provider to prevent pregnancy for up to ...
Cryselle
Cryselle is used for abnormal uterine bleeding, birth control, endometriosis, gonadotropin inhibition
Liletta
Liletta (levonorgestrel) is an intrauterine device (IUD) used to prevent pregnancy and also to ...
ella
ella (ulipristal) is an emergency contraceptive used to prevent pregnancy after having sex without ...
Lutera
Lutera is used for abnormal uterine bleeding, birth control, endometriosis, gonadotropin ...
Learn more
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Check Interactions
To view an interaction report containing 4 (or more) medications, please sign in or create an account.
Save Interactions List
Sign in to your account to save this drug interaction list.