Answer
Yes, headache is listed as an uncommon side effect of omega-3-acid ethyl esters 90 in the Strides Pharma UK Ltd product, affecting at least 1 in 1,000 but fewer than 1 in 100 people.
Sources for this answer
- Omega 3-acid-ethyl esters 1000mg soft capsulesStrides Pharma UK Ltd · emc · SmPC §4.8 Undesirable effects · Version 7Document updated
Sources checked