Drug interactions with phentermine

Phentermine is a medication used for weight loss. It works by suppressing the appetite and increasing metabolism. It is a sympathomimetic amine that belongs to the anorectic class of drugs. However, like any other medication, it has potential interactions with other drugs, and it is essential to be aware of them before taking phentermine.

Interactions with MAO inhibitors

MAO (monoamine oxidase) inhibitors are a type of medication used to treat depression. It is recommended not to take phentermine and MAO inhibitors together because it can lead to a dangerous increase in blood pressure, which can cause a stroke or heart attack. If you are using an MAO inhibitor or have stopped using it within the last 14 days, talk to your doctor before taking phentermine.

Interactions with serotonin-norepinephrine reuptake inhibitors (SNRIs)

SNRIs are a class of medications used to treat depression and anxiety. Taking phentermine and SNRIs together can lead to serotonin syndrome. Symptoms of serotonin syndrome include agitation, confusion, rapid heartbeat, changes in blood pressure, increased body temperature, muscle stiffness, and tremors. If you experience any of these symptoms, seek medical attention immediately.

Interactions with selective serotonin reuptake inhibitors (SSRIs)

SSRIs are also used to treat depression and anxiety. Taking phentermine and SSRIs together can lead to serotonin syndrome. If you are taking an SSRI or have stopped using it within the last 14 days, talk to your doctor before taking phentermine.

Interactions with other weight loss medications

Taking phentermine with other weight loss medications can increase the risk of side effects such as hypertension, palpitations, and insomnia. It is not recommended to combine phentermine with other weight loss medications without consulting your doctor.

Interactions with blood pressure medications

Phentermine can increase blood pressure, so it is essential to monitor your blood pressure while taking this medication. If you are taking blood pressure medications, such as beta-blockers or diuretics, make sure to inform your doctor before taking phentermine. Your doctor may need to adjust your dosage or monitor your blood pressure more closely.

Interactions with diabetes medications

Phentermine can affect blood sugar levels, so people with diabetes should be cautious before taking this medication. If you are taking diabetes medications such as insulin or oral hypoglycemic agents, talk to your doctor before taking phentermine. Your doctor may need to adjust your dosage or monitor your blood sugar more closely.

Interactions with alcohol

Drinking alcohol while taking phentermine can increase the risk of side effects such as dizziness, lightheadedness, and impaired thinking. It is recommended to avoid alcohol while taking phentermine.