Phentermine 15mg is a prescription medication that belongs to the class of appetite suppressants. It is used as an adjunct to exercise, behavioral modification, and calorie restriction in the treatment of obesity. Phentermine works by stimulating the release of norepinephrine, which helps to reduce hunger and increase metabolism.

The recommended initial dose for adults is 15mg taken orally once daily before breakfast or, if divided into two doses, half an hour before breakfast and lunch. However, dosage may be adjusted based on individual response and tolerance.

Potential side effects may include dry mouth, constipation, insomnia, and increased heart rate/blood pressure. Since Phentermine can be habit-forming and has the potential for abuse/dependence, it should not be taken for long periods or in higher doses than prescribed. Pregnant women should avoid using this drug as it may cause harm to the fetus.