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.
Tell your healthcare provider about all of the medicines you take, including prescription and non-prescription medicines, antacids, vitamins, and herbal supplements.
(Click the links below for more precautions and warnings related to methylphenidate extended release: