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# Isoxsuprine Hydrochloride
## Overview
Isoxsuprine hydrochloride is a vasodilator agent historically used for peripheral vascular diseases. Its efficacy and widespread use have declined due to limited evidence of benefit in many conditions.
## Primary Indications
* **Peripheral vascular disease:** Such as intermittent claudication and Raynaud's disease. *Note: Evidence supporting its efficacy is limited, and it is not a first-line therapy.*
## Adult Dosing
* **Peripheral vascular disease:** 10-20 mg orally 3-4 times daily.
## Pediatric Dosing
* No established pediatric dosing. Use is generally not recommended.
## Dose Adjustments
* No specific dose adjustments are established for renal or hepatic impairment.
## Contraindications
* Use in patients with congenital heart disease.
* Hypersensitivity to isoxsuprine hydrochloride.
## Adverse Effects
* **Common:** Flushing, dizziness, headache, nausea, vomiting, abdominal distress, weakness, hypotension.
* **Less Common:** Tachycardia, skin rash, drowsiness, nervousness.
## Key Drug Interactions
* **Antihypertensives:** Isoxsuprine may cause hypotension, potentially potentiating the effects of antihypertensive agents.
* **Other vasodilators:** May lead to additive hypotensive effects.
## Monitoring
* Blood pressure.
* Signs and symptoms of peripheral vascular disease.
* Adverse effects.
## Clinical Pearls
* Efficacy in treating peripheral vascular disease is not well-established by rigorous clinical trials.
* Onset of action is typically within 30-60 minutes, with peak effects at 1-2 hours.
* Not recommended for use in patients with congenital heart disease due to potential for paradoxical embolism.
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**Disclaimer:** This information is intended for healthcare professionals and is not a substitute for professional medical advice. Always consult the current prescribing information and a qualified healthcare provider for any medical condition or treatment.
