Phentermine is an amphetamine-like stimulant that is commonly used as an appetite suppressant. According to Drugs.com, it is generally prescribed to help overweight individuals lose weight, especially in individuals who have other weight-related risk factors like high cholesterol or diabetes. Phentermine has been shown to help individuals lose weight, but the medication is not without side effects. Heart related effects of phentermine should especially be noted by patients.
Heartbeat Changes
Phentermine has a stimulant effect on the body, which can lead to changes in heart rates. Drugs.com notes that patients taking phentermine may experience pounding or racing heartbeats as well as a fluttering and irregular heartbeat patterns or heart palpitations. These changes in heartbeat patterns are considered to be serious side effects of the medication and warrant immediate medical attention. EmedTV notes that patients who already have irregular heartbeat issues prior to starting a course of phentermine will want to be sure their doctor approves their dosage and monitor their health carefully.
Chest Pains
Another effect of phentermine on the heart is chest pains. This is considered to be a serious side effect of the medication, and Drugs.com notes that chest pains may be accompanied by a sensation of blacking out or feeling like a black out is just about to happen. Patients who have a history of heart problems or who have previously had a heart attack will want to exercise caution when starting a phentermine course and be sure they have approval from their doctor.
High Blood Pressure
Drugs.com notes that in some cases, phentermine use has been linked to dangerously high blood pressure. Patients who are experiencing this effect of phentermine on the heart may experience symptoms such as severe headaches, blurred vision, buzzing in the ears and confusion. Phentermine's effects on blood pressure can also lead to seizures, and patients will want to immediately contact a medical professional if these symptoms are occurring. Patients who have a pre-existing diagnosis of high blood pressure will want to be sure that their doctor is aware of this as the phentermine dosage may need to be modified as a result.
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