Some Concerta warnings and precautions include potential drug interactions, the possibility of sudden death when Concerta is taken by people with heart problems, and the danger of taking the medication while pregnant. Prior to taking Concerta, be sure to tell your healthcare provider if you have any kind of heart problems, high blood pressure, or any allergies. You should not take Concerta if you have glaucoma or severe anxiety.
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.
It is also important to also tell your healthcare provider about all of the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements.