Regitine (Phentolamine Mesylate Ampoules) 5mg/ml

Regitine (Phentolamine Mesylate) 5mg/ml ampoules are used for managing hypertensive emergencies and reversing vasoconstriction. This alpha-blocker injection helps restore blood flow and reduce blood pressure quickly. Store between 2-8°C to maintain potency. Suitable for emergency care settings.

Strength

5mg/ml

Pack Size

Storage

2-8°

Manufacturer / TM Owner

Novartis

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Pack/s

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Indications & Clinical Uses

Phentolamine Mesylate, sold as Regitine, is primarily used to treat hypertensive emergencies caused by excess catecholamines. It is also effective in reversing vasoconstriction from vasopressors or accidental adrenaline injection. This medication helps restore normal blood flow and reduce dangerously high blood pressure. It may be used in diagnostic tests for pheochromocytoma.

Side Effects

Regitine works by blocking alpha-adrenergic receptors, which helps relax blood vessels and improve circulation. Users may notice a gradual reduction in blood pressure and improved blood flow to tissues. The onset of effects is typically rapid when administered intravenously. Some individuals may experience mild dizziness or flushing as blood pressure adjusts.

Precautions & Warnings

Regitine should be handled with care and administered by trained medical professionals. Store ampoules refrigerated between 2-8°C and protect from light. Inspect for particles or discoloration before use. Avoid freezing and discard any unused solution after opening. Patients with severe coronary artery disease should use with caution due to potential blood pressure fluctuations.

Avoid Interactions

Regitine may interact with other medications that affect blood pressure, including beta-blockers and vasodilators. Combining it with alcohol or certain anesthetics can enhance hypotensive effects. Caution is advised when used alongside other alpha-blockers or medications metabolized by CYP enzymes. Always inform healthcare providers about all current medications before administration.

References

Frequently Asked Questions

Regitine (Phentolamine Mesylate) is used to treat hypertensive emergencies and reverse vasoconstriction caused by excess catecholamines or vasopressors.

Regitine ampoules should be stored refrigerated between 2-8°C and protected from light. Avoid freezing and discard any unused solution after opening.

Regitine should only be administered by trained medical professionals in a clinical setting due to its potent effects on blood pressure.

Common effects may include dizziness, flushing, or a temporary drop in blood pressure as the body adjusts to the medication.

Patients with severe coronary artery disease should use Regitine with caution due to potential blood pressure fluctuations.

Published by GNH India Pharmaceuticals Limited

Last updated: 17 Jun 2026

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