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# Isoxsuprine Hydrochloride
## Overview
Isoxsuprine hydrochloride is a vasodilator that acts directly on vascular smooth muscle to produce relaxation, leading to peripheral vasodilation.
## Primary Indications
* Management of peripheral vascular disease, such as intermittent claudication, pallor, and cyanosis.
* Raynaud's disease.
* Ankle-brachial index (ABI) improvement in some patients with peripheral artery disease.
## Adult Dosing
* **Usual dose:** 10-20 mg orally three to four times daily.
* **Maximum dose:** Not clearly established, but doses above 20 mg per administration may not offer additional benefit and can increase adverse effects.
## Pediatric Dosing
There is no established pediatric dosing for isoxsuprine hydrochloride.
## Dose Adjustments
No specific dose adjustments are recommended for renal or hepatic impairment, but caution is advised.
## Contraindications
* Hypersensitivity to isoxsuprine hydrochloride.
* Congenital heart disease.
* Use immediately postpartum or in patients with significant hypotension.
## Adverse Effects
* **Common:** Flushing, hypotension, dizziness, weakness, nausea, vomiting, rash, gastrointestinal upset.
* **Serious:** Hypotension, paradoxical increase in angina in patients with coronary artery disease.
## Key Drug Interactions
* **Antihypertensives:** May potentiate hypotensive effects.
* **Epinephrine:** May antagonize the vasodilating effects of isoxsuprine.
## Monitoring
* Blood pressure.
* Symptoms of peripheral vascular disease (e.g., claudication distance, skin temperature, color).
* Signs of adverse effects.
## Clinical Pearls
* Effectiveness in peripheral vascular disease is controversial, and clinical benefit should be regularly assessed.
* Administer with food if gastrointestinal upset occurs.
* Avoid use in patients with severe atherosclerosis or arteriosclerosis.
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**Disclaimer:** This information is intended for healthcare professionals. It is essential to consult the most current prescribing information and relevant clinical guidelines before making any treatment decisions. Dosing and recommendations may vary based on individual patient factors and local protocols.
