How long does it take to know if Aventyl 10 mg is effective as a prophylactic treatment for cervicogenic headaches and migraines?

It typically takes about 4 weeks for Aventyl 10 mg to start showing a reduction in migraine symptoms. However, the optimal effects of the medication may not be felt until around 6 months of continuous use. It is recommended to wait at least 4 weeks before considering increasing the dose, as doing so too soon may result in experiencing unwanted side effects.