Phentermine is a drug typically used as an appetite suppressant. It was approved for this purpose by the Food and Drug Administration (FDA) in 1959 and has been manufactured under a variety of trade names. The most common trade names for phentermine in the United States currently include Adipex-P and Ionamin. Phentermine can be an effective diet aid but you must use it with caution since it's similar to amphetamine and is a controlled substance.
Step 1
Determine your Body Mass Index (BMI). You can calculate your BMI by dividing your weight in kilograms by the square of your height in meters. You will generally only obtain a prescription for phentermine if you have a BMI of at least 30 and are otherwise healthy or a BMI of at least 27 and are at an increased risk for heart disease.
Step 2
Combine phentermine with diet and exercise for a short period to achieve effective weight loss. You will typically receive a prescription for phentermine for only three to six weeks, although this depends on its specific effect on you.
Step 3
Use phentermine according to the directions. This will typically be a single dose in the morning two hours after breakfast. Another common schedule is three times per day 30 minutes before a meal. It's essential that you not exceed the dosage or frequency instructions, since phentermine can be habit-forming.
Step 4
Examine the contraindications for phentermine. You may not be able to take phentermine if you're taking other medications for depression or weight loss, or have a history of drug abuse. Medical conditions that may contraindicate the use of phentermine include diabetes, glaucoma, heart disease and pregnancy.
Step 5
Watch out for side effects of phentermine. You should inform your doctor of any side effects such as diarrhea, vomiting and constipation if they don't resolve within a few days. Call your doctor immediately if you experience any serious side effects such as an increase in blood pressure, heart palpitations, shortness of breath and chest pains.
Things You'll Need
- Phentermine
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