Skip to main content
HomeDrug Comparisons
Drug bottle and Pill

Compare Aimovig vs. Ajovy

Head-to-head comparisons of medication uses, side effects, warnings, and more.

Key takeaways

Aimovig (erenumab) and Ajovy (fremanezumab) are both used to prevent migraines in adults, but they have some differences. Aimovig is a calcitonin gene-related peptide (CGRP) receptor antagonist, while Ajovy is a CGRP receptor blocker. Both work to block the proteins involved with migraine pain. Aimovig is injected once a month, whereas Ajovy offers two dosing options: once a month or once every three months. Both medications are available only as brand-name options and come in prefilled syringes or autoinjectors. Aimovig can cause constipation and high blood pressure, while Ajovy's main side effect is injection-site reactions. Additionally, Aimovig has a specific warning for those with latex allergies, which isn't mentioned for Ajovy. Neither medication is approved for use in children under 18 years old.

drug combination

See more from our pharmacists

  • Aimovig (erenumab)
    Ajovy (fremanezumab)
  • Aimovig (erenumab)
    Ajovy (fremanezumab)

  • Summary of Aimovig vs. Ajovy

    Summary for CGRP antagonist
    Prescription only

    Aimovig (erenumab or erenumab-aooe) is a migraine medication called a CGRP antagonist. It helps prevent migraines in adults. Aimovig (erenumab) comes as an autoinjector and prefilled syringe. You inject each dose under the skin in the thigh or stomach once a month. Side effects can include pain, swelling, or redness where you injected the medication.

    Summary for CGRP antagonist
    Prescription only

    Ajovy (fremanezumab or fremanezumab-vfrm) is a type of migraine medication called a calcitonin gene-related peptide (CGRP) antagonist. It's an injection given under the skin to help prevent migraines in adults. It can also help prevent episodic migraines in children ages 6 years and older who weigh at least 99 lbs. This medication is injected once a month or once every 3 months. It's injected using either the prefilled autoinjectors or syringes. Side effects include injection-site reactions like pain, swelling, and redness.

  • Indications of Aimovig vs. Ajovy

    Indications for
    •Prevention of migraines in adults
    Indications for
    •Prevention of chronic migraines in adults
    •Prevention of episodic migraines in children 6 to 17 years old who weigh at least 99 lbs

  • Pros and Cons of Aimovig vs. Ajovy

    Pros and Const for CGRP antagonist
    Pros
    •Taken only once a month to help prevent migraines
    •Available as a prefilled syringe and a prefilled autoinjector
    Cons
    •Must give as an injection under the skin
    •Not approved for children
    Pros and Const for CGRP antagonist
    Pros
    •Can help reduce the number of migraine days per month in adults and in children after a few months of treatment
    •Taken once a month (or even once every 3 months for adults)
    •Available as a prefilled syringe and a prefilled autoinjector
    Cons
    •Must inject it under the skin
    •Not used for relieving and treating an active migraine
    •Might be hard for some people to use properly

  • Common Side Effects of Aimovig vs. Ajovy

    Common Side Effects for
    •Pain, swelling, or redness at the injection site (up to 6%)
    •Constipation (up to 3%)
    Common Side Effects for
    •Pain, swelling, redness, or other reaction at the injection site (43-45%)

  • Warnings of Aimovig vs. Ajovy

    Common Side Effects for
    •Allergic reactions
    •Constipation with serious complications
    •High blood pressure
    •Raynaud's phenomenon
    Common Side Effects for
    •Allergic reactions
    •High blood pressure
    •Raynaud's phenomenon

  • Prices with our coupons for Aimovig vs. Ajovy

    Learn more about Aimovig
    Learn more about Ajovy

Compare other Migraine drugs

Aimovig vs AjovyAimovig vs BotoxAimovig vs EmgalityNurtec vs AimovigQulipta vs AimovigUbrelvy vs AimovigAjovy vs EmgalityDaxxify vs BotoxDysport vs BotoxEmgality vs FioricetEmgality vs FrovaEmgality vs MaxaltEmgality vs NurtecEmgality vs Trokendi XrEmgality vs UbrelvyEmgality vs ZomigJeuveau vs BotoxNurtec vs RizatriptanNurtec vs SumatriptanQbrexza vs BotoxQulipta vs NurtecQulipta vs UbrelvyReyvow vs AjovyReyvow vs UbrelvyTretinoin vs BotoxUbrelvy vs AjovyUbrelvy vs NurtecUbrelvy vs RelpaxUbrelvy vs RizatriptanUbrelvy vs Zolmitriptan
View More

Browse medications

View All

Research prescriptions and over-the-counter medications from A to Z, compare drug prices, and start saving.