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# Isoxsuprine hydrochloride
## Overview
Isoxsuprine hydrochloride is a vasodilator that primarily acts on smooth muscle, causing relaxation.
## Primary Indications
* Peripheral arterial insufficiency (e.g., claudication).
* Cerebrovascular insufficiency.
* Raynaud's disease.
Note: The efficacy of isoxsuprine for these indications is not definitively established in all regions.
## Adult Dosing
* **Peripheral Arterial Insufficiency/Cerebrovascular Insufficiency:** 10-20 mg orally 3-4 times daily.
* **Raynaud's Disease:** 10-20 mg orally 3-4 times daily.
The total daily dose should not exceed 80 mg.
## Pediatric Dosing
Dosing in pediatric patients is not established. Use is not recommended.
## Dose Adjustments
No specific dose adjustments are recommended for renal or hepatic impairment. However, caution is advised due to potential accumulation.
## Contraindications
* Hypersensitivity to isoxsuprine hydrochloride.
* Use immediately postpartum.
* Use in patients with congenital heart defects.
## Adverse Effects
* **Common:** Flushing, GI upset (nausea, vomiting, abdominal distress), weakness, dizziness, headache, hypotension, rash.
* **Less Common:** Tachycardia, palpitations, drowsiness.
## Key Drug Interactions
* **Antihypertensives:** Isoxsuprine may potentiate the hypotensive effects. Monitor blood pressure closely.
* **Other Vasodilators:** Additive hypotensive effects may occur.
## Monitoring
* Blood pressure.
* Heart rate.
* Signs and symptoms of peripheral vascular disease.
* Adverse drug reactions.
## Clinical Pearls
* Isoxsuprine is generally not recommended for acute treatment of vascular emergencies.
* It is important to counsel patients regarding potential side effects like dizziness and hypotension, especially when standing.
* Patient selection is crucial; it is most effective in patients with vasospastic disorders.
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*Disclaimer: This information is intended for healthcare professionals and is not a substitute for professional medical advice. Always consult the most current prescribing information and your institution's protocols before making clinical decisions.*
