Adipex-P® is the leading Brand of Phentermine manufactured by Gate Pharmaceuticals. Adipex-P is chemically related to amphetamines. It works by suppressing the appetite, and it may also increase the metabolism. Although the official name of this product is "Adipex-P" (the P stands for phentermine), many people refer to this drug as simply "Adipex."
This medication is best taken on an empty stomach one hour before meals. Because this medication may cause sleeplessness, avoid taking a dose late in the day. Take this medication as prescribed. Do not take it more often or longer than directed. It is usually taken for 8 to 12 weeks. Use in combination with other appetite suppressant medicine is generally not recommended. Consult your doctor before such use.

Blurred vision, dizziness, dry mouth, sleeplessness, irritability, stomach upset or constipation may occur the first few days as your body adjusts to the medication. If these effects persist or become bothersome, inform your doctor. Notify your doctor if you experience: chest pain, nervousness, pounding heart, difficulty urinating, mood changes, breathing difficulties, swelling. If you notice other effects not listed above, contact your doctor or pharmacist.
Overdose symptoms may include confusion, diarrhea, nausea, rapid breathing, restlessness, stomach cramps, tremor, vomiting. If overdose is suspected, contact your local poison control center or emergency room immediately. Read more