Talk to your healthcare provider about precautions and warnings with biperiden before starting treatment to discuss possible side effects or complications that may occur. For example, make sure your healthcare provider is aware of any other medical conditions you may have (such as glaucoma, bladder problems, or a rapid heart rate), as they may become worse with biperiden. Warnings and precautions also include potential drug interactions and allergic reactions.
A job that requires you to do manual labor in the heat
Any allergies, including allergies to foods, dyes, or preservatives.
Also, let your healthcare provider know if you are:
Pregnant or thinking of becoming pregnant
Breastfeeding.
Make sure to tell your healthcare provider about any medications you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.