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# Isoxsuprine hydrochloride
## Overview
Isoxsuprine hydrochloride is a peripheral vasodilator.
## Primary Indications
* Treatment of peripheral vascular disease (e.g., arteriosclerosis obliterans, Raynaud's disease, intermittent claudication) to improve blood flow.
* Historically used for premature labor, but this is not an FDA-approved indication and is generally not recommended due to safety concerns.
## Adult Dosing
* **Peripheral Vascular Disease:** 10-20 mg orally every 3-4 times daily. Doses may be increased gradually based on response and tolerance, but do not exceed 40 mg every 3-4 times daily.
## Pediatric Dosing
* No established pediatric dosing. Safety and efficacy have not been determined.
## Dose Adjustments
* **Renal Impairment:** Use with caution. No specific dose adjustments are established; monitor for adverse effects.
* **Hepatic Impairment:** Use with caution. No specific dose adjustments are established; monitor for adverse effects.
## Contraindications
* Hypersensitivity to isoxsuprine.
* Use in patients with congenital heart defects.
* Use in patients who have had a recent myocardial infarction.
## Adverse Effects
* **Cardiovascular:** Hypotension, tachycardia, flushing, dizziness, weakness.
* **Gastrointestinal:** Nausea, vomiting, abdominal distress, anorexia.
* **Other:** Rash, blurred vision, nervousness, drowsiness.
## Key Drug Interactions
* **Antihypertensives:** Isoxsuprine may potentiate the hypotensive effects. Monitor blood pressure closely.
* **Vasodilators:** Additive hypotensive effects may occur.
## Monitoring
* Blood pressure and heart rate.
* Signs and symptoms of peripheral vascular disease improvement.
* Adverse effects.
## Clinical Pearls
* Effectiveness in peripheral vascular disease is controversial and not well-established by rigorous studies.
* Patients should be advised to avoid activities requiring mental alertness (e.g., operating machinery, driving) until they know how the drug affects them due to potential dizziness or drowsiness.
* Oral administration may be given with or without food.
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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 for definitive guidance. Dosing and recommendations may vary based on patient-specific factors and local protocols.*
