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# Isoxsuprine hydrochloride
## Overview
Isoxsuprine hydrochloride is a peripheral vasodilator. It is believed to act by relaxing vascular smooth muscle, leading to vasodilation.
## Primary Indications
* Treatment of peripheral vascular diseases such as arteriosclerosis obliterans, Raynaud's disease, and intermittent claudication. Its efficacy in these conditions is not well-established by robust clinical trials.
## Adult Dosing
* Oral: 10-20 mg three to four times daily.
* Maximum dose: Not clearly established, but typically not exceeding 80 mg daily.
## Pediatric Dosing
* No established pediatric dosing. Use is generally not recommended.
## Dose Adjustments
* No specific dose adjustments are recommended for renal or hepatic impairment, but caution is advised due to potential for reduced clearance.
## Contraindications
* Hypersensitivity to isoxsuprine hydrochloride.
* Do not administer in patients with congenital heart defects or arrhythmias.
## Adverse Effects
* Common: Nausea, vomiting, stomach upset, dizziness, weakness, flushing, rash.
* Less Common/Serious: Hypotension, tachycardia, palpitations, drowsiness, nervousness, gastrointestinal bleeding.
## Key Drug Interactions
* Antihypertensives: Isoxsuprine may potentiate the hypotensive effects of antihypertensive medications.
* Other vasodilators: Additive hypotensive effects may occur.
## Monitoring
* Blood pressure: Monitor for hypotension, especially upon initiation or dose increase.
* Heart rate: Monitor for tachycardia.
* Signs and symptoms of peripheral vascular disease.
## Clinical Pearls
* The clinical benefit of isoxsuprine hydrochloride in peripheral vascular disease is controversial and not supported by strong evidence.
* Administer with food to minimize gastrointestinal upset.
* Discontinue if adverse effects occur.
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**Disclaimer:** This information is intended for healthcare professionals. Always consult the most current prescribing information and relevant literature before making clinical decisions. Local institutional guidelines and protocols may also apply.
