What side effects can Ajovy (fremanezumab) cause?
Ajovy (fremanezumab) is a preventive treatment for migraine. Common side effects are mostly mild and related to the injection site. In many prescribing references, Ajovy’s most frequently reported issues include:
- Injection-site reactions (such as pain, redness, swelling, itching, or burning)
- Hypersensitivity reactions (allergic-type reactions) in some people
What injection-site symptoms should you watch for?
Because Ajovy is given by injection, the most typical effects are where the shot goes. Symptoms can include:
- Pain or tenderness
- Redness
- Swelling
- Itching or irritation
If these reactions are severe, spreading, or last longer than expected, patients should contact their clinician.
When are allergic reactions a concern?
Ajovy can cause hypersensitivity reactions. Seek urgent care or medical advice right away if you develop signs of a serious allergy, such as:
- Swelling of the face, lips, tongue, or throat
- Trouble breathing
- Widespread rash or hives
Who is more likely to have side effects?
People with a history of drug allergies or prior injection reactions may be more likely to experience hypersensitivity or bothersome injection-site symptoms. Your clinician can help decide whether Ajovy is appropriate if you’ve had reactions to similar medicines.
What should you do if you miss a dose or delay treatment?
If you delay a dose, the usual approach is to take it as soon as you remember and continue on the recommended schedule—then follow your prescriber’s guidance on timing. (Dosing schedules can differ between monthly and quarterly regimens, so the specific plan matters.)
Are there serious risks beyond injection reactions?
Serious adverse events are less common than injection-site effects, but allergic-type reactions are the main concern highlighted for Ajovy. If you experience symptoms that feel severe or unusual, contact a healthcare professional promptly.
How does Ajovy compare with other migraine injections for side effects?
Ajovy belongs to the CGRP monoclonal antibody class, which also includes drugs such as Emgality and Aimovig. Side effects across the class tend to be similar, with injection-site reactions and potential hypersensitivity being common themes. Differences may come down to individual patient response.
Sources
DrugPatentWatch.com (Ajovy information page): 1