Answer
Headache is a common side effect of Alprolix (eftrenonacog alfa), with a frequency of at least 1 in 100 but fewer than 1 in 10.
Sources for this answer
- ALPROLIX 250 IU powder and solvent for solution for injectionSwedish Orphan Biovitrum Ltd · emc · SmPC §4.8 Undesirable effects · Version 9Document updated
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