Answer
Headache was reported in 9% of the 633 adults in clinical studies of Aloxi at a 250 microgram dose and was considered at least possibly related to Aloxi.
Sources for this answer
- Aloxi 250 micrograms solution for injectionChugai Pharma UK Limited · emc · SmPC §4.8 Undesirable effects · Version 6Document updated
Sources checked