Erenumab is a medicine used to prevent chronic migraines, often prescribed in the field of Neuro-Ophthalmology.
| Drug class | CGRP Antibody |
|---|---|
| Type | Single |
| Forms | SC Injection |
| Common strength | 70 / 140 mg |
| Common Indian brands | Aimovig |
| Prescription status | Prescription |
What Erenumab is used for
Erenumab is a specialized medicine primarily used for:
- Chronic migraine prevention: This medicine helps reduce the frequency and severity of chronic migraines, which are severe headaches that occur frequently over a long period. While migraines can sometimes cause visual disturbances, Erenumab’s main role is in preventing the migraine itself.
At Pristine Eye Hospitals, our ophthalmologists may recommend Erenumab as part of a comprehensive treatment plan for patients experiencing chronic migraines, especially those that impact their daily life and vision-related activities. It is important to understand that this medicine is for prevention, not for treating a migraine attack once it has started.
How it works
Erenumab works by targeting a specific pathway in your body that is involved in migraine attacks. Migraines are complex, but one key player is a substance called Calcitonin Gene-Related Peptide (CGRP). When CGRP is released, it can contribute to the pain and inflammation associated with a migraine.
Erenumab is a type of medicine known as a CGRP antibody. This means it is designed to block the CGRP receptor. By blocking this receptor, Erenumab helps to prevent CGRP from binding and activating the pathway that leads to a migraine. In simpler terms, it acts like a shield, preventing the ‘migraine signal’ from getting through, thereby helping to reduce the number of migraine days you experience each month.
This targeted approach helps to prevent migraines before they even begin, offering a new way to manage chronic migraine for many patients.
How it’s used
Erenumab is administered as a subcutaneous (SC) injection, which means it is given just under the skin. It comes in two strengths: 70 mg and 140 mg. Your ophthalmologist will decide the appropriate strength for you based on your specific condition and response to treatment.
The typical dosing for Erenumab is once a month. This regular schedule is important for maintaining its preventive effect against chronic migraines.
Your doctor or a trained healthcare professional at Pristine Eye Hospitals will show you how to administer the injection correctly, or you may receive it at our hospital. It is crucial to follow their instructions precisely regarding the injection technique, site rotation, and disposal of used syringes or pens. Do not change your dosing schedule or stop using the medicine without consulting your doctor.
Always remember that this is a prescription medicine, and its use should be strictly as directed by your qualified ophthalmologist.
Always follow your ophthalmologist’s exact instructions.
Brands available in India
- Aimovig
Brand availability and pricing vary; confirm with your pharmacist.
Good to know
Prescription eye medicine — use only as directed by a qualified ophthalmologist. This page is for general education and is not a substitute for professional medical advice, diagnosis or a prescription. Do not self-medicate or reuse an old prescription.
Precautions & side effects
While Erenumab is generally well-tolerated, it’s important to be aware of potential precautions and side effects. The most commonly noted precaution is:
- Constipation: Some patients may experience constipation while using Erenumab. If you notice this, please discuss it with your doctor. They may suggest dietary changes or other remedies to help manage this side effect.
It is crucial to inform your ophthalmologist about all your existing medical conditions and any other medicines you are taking, including over-the-counter drugs, supplements, and herbal remedies. This helps your doctor ensure Erenumab is safe and appropriate for you.
If you experience any unusual or severe side effects, or if your condition worsens, contact your doctor immediately. Always remember: Prescription eye medicine — use only as directed by a qualified ophthalmologist. This page is for general education and is not a substitute for professional medical advice, diagnosis or a prescription. Do not self-medicate or reuse an old prescription.
Welcome to Pristine Eye Hospitals, your trusted partner in eye care in India. We understand that managing chronic conditions like migraines can be challenging, and we are here to provide you with clear, helpful information about your treatment options, including medicines like Erenumab.
Chronic migraines are more than just a bad headache; they are a neurological condition characterized by frequent, severe headaches that can significantly impact your daily life, including your ability to see clearly, focus, and perform routine tasks. These migraines often come with other symptoms like throbbing pain, sensitivity to light and sound, and nausea. When migraines occur on 15 or more days a month for at least three months, with at least eight of those days having migraine features, it is classified as chronic migraine. Our neuro-ophthalmology specialists at Pristine Eye Hospitals are experts in diagnosing and managing such complex conditions, ensuring you receive the most appropriate and effective care.
Understanding your condition and how your medicine works is a vital part of your treatment journey. Erenumab is a preventive medicine, meaning its goal is to reduce the number of migraine days you experience each month, rather than to stop a migraine once it has started. Consistent use as prescribed by your doctor is key to achieving the best results and improving your quality of life.
General Advice for Managing Your Eye Medicine
Even though Erenumab is an injection, general principles of medicine management are important. Always store your medicine as directed by your doctor or pharmacist, usually in a cool, dry place away from direct sunlight and out of reach of children. If the medicine requires refrigeration, ensure it is stored correctly. Before each use, always check the expiry date on the packaging. Never use expired medicine. If you are administering the injection yourself, ensure your hands are clean and follow the exact technique demonstrated by your healthcare provider. Proper hygiene helps prevent infections and ensures the medicine works as intended.
It is also crucial to maintain a complete record of all your medicines. Inform your doctor about any other medications you are taking, including over-the-counter drugs, herbal supplements, and vitamins. This helps prevent potential interactions and ensures your treatment plan is safe and effective. If you have any allergies, make sure your doctor is aware of them.
When to Seek Help
Your health and well-being are our top priority at Pristine Eye Hospitals. While Erenumab is prescribed to help you, it’s important to know when to contact your doctor. If you experience any severe or unexpected side effects, such as a serious allergic reaction (e.g., difficulty breathing, swelling of the face or throat, severe rash), contact emergency services immediately. For less severe but persistent side effects, like bothersome constipation, or if you feel the medicine is not working as expected, please schedule an appointment with your ophthalmologist. Do not wait for your next scheduled visit if you have significant concerns.
Regular follow-up appointments with your ophthalmologist are essential to monitor your progress, assess the effectiveness of Erenumab, and make any necessary adjustments to your treatment plan. These visits also provide an opportunity to discuss any new symptoms or concerns you may have. Remember, this page is for general education and is not a substitute for professional medical advice, diagnosis, or a prescription. Always consult with a qualified ophthalmologist for personalized care and treatment.
Frequently asked questions
What is Erenumab used for?
Erenumab is used for the prevention of chronic migraines. It helps to reduce the frequency and severity of migraine attacks.
How does Erenumab work?
Erenumab works by blocking the CGRP (Calcitonin Gene-Related Peptide) receptor. CGRP is a substance involved in triggering migraine attacks, and by blocking its receptor, Erenumab helps to prevent migraines from occurring.
What are the common Indian brands for Erenumab?
In India, Erenumab is available under the brand name Aimovig.
How is Erenumab administered?
Erenumab is given as a subcutaneous (under the skin) injection, typically once a month. Your doctor or a healthcare professional will guide you on the correct administration technique.
Do I need a prescription for Erenumab?
Yes, Erenumab is a prescription medicine. It should only be used as directed by a qualified ophthalmologist or neurologist.
What are the key precautions or side effects to be aware of with Erenumab?
A common precaution with Erenumab is the possibility of constipation. It's important to discuss any side effects with your doctor. Always inform your doctor about all your medical conditions and other medicines you are taking.
References
- Erenumab-aooe Injection: MedlinePlus Drug Information
- The role of erenumab in the treatment of migraine – PMC
- Eye health information – American Academy of Ophthalmology
- Learn about eye health – National Eye Institute (NIH)
- Blindness and vision impairment – World Health Organization
Medically reviewed by Dr. C Jagadesh Reddy, Chief Surgeon: Cornea, Cataract and Refractive Surgery — last reviewed 2026-07-28.
This page is for general education only and is not a substitute for professional medical advice, diagnosis or treatment. Never self-medicate or reuse an old prescription. Always consult a qualified ophthalmologist before starting, changing or stopping any eye medicine.