There are many Tenuate warnings and precautions that you should be aware of before starting treatment. For example, it is important to know that the drug may cause primary pulmonary hypertension (a serious lung problem), worsen glaucoma, and increase your heart rate and blood pressure. Tenuate warnings and precautions also apply to people who have a history of seizures, epilepsy, or hyperthyroidism.
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.
You should also be sure to tell your healthcare provider about all other medicines you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.