Answer
Headache is a very common side effect of methylphenidate hydrochloride, affecting at least 1 in 10 people in the combined Equasym XL and other methylphenidate formulation safety data, using the higher frequency where these differed.
Sources for this answer
- Equasym XL 10 mg, 20 mg or 30 mg CapsulesTakeda UK Ltd · emc · SmPC §4.8 Undesirable effects · Version 26Document updated
Sources checked