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# Isoxsuprine Hydrochloride
## Overview
Isoxsuprine hydrochloride is a peripheral vasodilator. Its exact mechanism of action in improving intermittent claudication is not fully understood but is thought to involve direct relaxation of vascular smooth muscle.
## Primary Indications
* Treatment of peripheral vascular disease, including intermittent claudication.
## Adult Dosing
* **Oral:** The usual dose is 10-20 mg, 3 to 4 times daily.
## Pediatric Dosing
* No established pediatric dosing.
## Dose Adjustments
* No specific dose adjustments are recommended for hepatic or renal impairment in standard literature.
## Contraindications
* Hypersensitivity to isoxsuprine.
* Concomitant administration with arterenol (norepinephrine) due to potential for severe hypotension.
* Not recommended for use in patients with recent myocardial infarction or in those with significant cardiac arrhythmias.
## Adverse Effects
* **Common:** Nausea, vomiting, dizziness, weakness, flushing, stomach upset.
* **Less Common:** Hypotension, tachycardia, rash, gastrointestinal bleeding.
## Key Drug Interactions
* **Arterenol (norepinephrine):** Concurrent use may cause severe hypotension.
* **Antihypertensives:** Isoxsuprine may cause hypotension, potentially potentiating the effects of antihypertensive agents.
## Monitoring
* Monitor blood pressure for hypotension.
* Assess for improvement in claudication symptoms.
* Observe for adverse effects.
## Clinical Pearls
* Efficacy in intermittent claudication is controversial and not universally accepted.
* Oral administration is typical.
* Avoid use in patients with recent MI or significant arrhythmias.
**Disclaimer:** This information is intended for clinical use and does not replace professional medical judgment. Always verify current prescribing information and institutional protocols before administration.
