Safety of Oral Minoxidil with Phentermine

Cardiovascular Concerns with Combined Use

• Phentermine, a sympathomimetic amine anorectic, can cause elevated heart rate, increased blood pressure, dry mouth, insomnia, dizziness, and irritability, according to the American Diabetes Association 1, 2

Contraindications and Safety Considerations for Phentermine

• Phentermine is contraindicated for use with monoamine oxidase inhibitors, as recommended by the American Diabetes Association 1, 2, 3
• Phentermine should be avoided in patients with a history of cardiovascular disease, as stated by the American Gastroenterological Association 4
• Phentermine should also be avoided in patients with untreated hyperthyroidism, according to the American Gastroenterological Association 4, 5
• Phentermine can cause adrenergic hemodynamic effects, including changes in heart rate and blood pressure, as reported by the American Gastroenterological Association 4

Risk Factors for Adverse Events

• Patients with existing cardiovascular conditions are at increased risk for complications with either medication, as noted by the American Gastroenterological Association 4

Alternative Considerations

• For weight management, consider other FDA-approved medications with different mechanisms of action if phentermine is contraindicated, as recommended by the American Diabetes Association 1, 2