Nafronyl
Nafronyl is a peripheral vasodilator classified under ATC code C04, primarily used to improve blood flow in the extremities. It was historically prescribed for circulatory disorders such as intermittent claudication (leg pain during walking caused by poor blood flow) and other conditions affecting peripheral blood vessels. The medication has been discontinued or withdrawn in several countries due to safety and efficacy concerns, and its use has significantly declined worldwide.
A peripheral vasodilator once used for circulation disorders in the extremities, now largely discontinued in many markets.
Key facts at a glance
- ATC
- C04AX21
- RxNorm
- 7236
- Generic
- Nafronyl
- Class
- atc-c04
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- oral
- Forms
- capsule
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Nafronyl was used to treat peripheral circulation disorders, including intermittent claudication (painful cramping in legs during physical activity due to reduced blood flow), Raynaud's phenomenon, and other conditions involving impaired peripheral blood supply. Note: This medication has been withdrawn from many markets and may not be available in most countries.
As a peripheral vasodilator, nafronyl worked by relaxing and widening blood vessels in the extremities, thereby improving blood flow and oxygen delivery to tissues. The exact mechanism of action was not fully established and may have involved multiple pathways including serotonin receptor antagonism.
Nafronyl has been discontinued or withdrawn in numerous countries due to concerns about efficacy and safety. It is not currently approved by major regulatory agencies such as the FDA. Patients currently taking this medication should consult their healthcare provider about alternative treatment options. Always use medications only as prescribed by a qualified healthcare professional.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy