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For medical information on OPSUMIT® (macitentan) please contact Medical Information at Johnson & Johnson Innovative Medicine

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Thank you for your interest in contacting Johnson & Johnson. Please note that we can only provide information about products marketed within the United States, and must refer international inquiries to our affiliates.

For additional information, please contact Medical Information at Johnson & Johnson Innovative Medicine by using one of the following methods:

Phone: 1-800-526-7736
Email: Submit questions via janssenscience.com/email

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You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/safety/medwatch or call 1-800-FDA-1088.

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To report suspected adverse reactions, contact Johnson & Johnson at 1-800-526-7736, or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

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