Drug Interaction Report
2 potential interactions and/or warnings found for the following 2 drugs:
- terfenadine
- Wezlana (ustekinumab)
Interactions between your drugs
terfenadine ustekinumab
Applies to: terfenadine, Wezlana (ustekinumab)
Ustekinumab may decrease the blood levels and effects of terfenadine. You may need a dose adjustment if you have been receiving terfenadine and are starting treatment with ustekinumab. Likewise, if you have been receiving both medications, the dose of terfenadine may need to be adjusted when ustekinumab is discontinued. Contact your doctor if your condition changes or you experience increased side effects. 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.
Drug and food interactions
terfenadine food
Applies to: terfenadine
Terfenadine is no longer on the market in the US. Do not take terfenadine with any other food or medication.
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.
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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. |
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Further information
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