When completing the questionnaire, please ensure you let us know exactly what medications you are taking (prescribed and over the counter) to enable us to prescribe safely and avoid potential drug interactions.
There are no significant drug reactions reported with Xenical. However, it can affect the absorption of medications, and therefore the effectiveness of some medications. This is especially important for medications that work within a narrow therapeutic range such as lithium, warfarin, ciclosproin, antiepileptics and antiretrovirals. In these cases, you should speak with your local GP or specialist about starting this medication.
The absorption of thyroid medication may be affected by Xenical, so it is best to take these tablets at different times and speak with a doctor if you feel your thyroid symptoms are not as well controlled.
If you are using the oral contraceptive pill it cannot be relied upon for contraceptive cover if taking Xenical and you should use additional or alternative contraception.