Phentermine is a highly effective anti-obesity drug, which is structurally similar to amphetamine. Phentermine affects the transmission of signals between brain cells, and thus: 1. Inhibits cravings for high-calorie foods, 2. Helps reduce calories intake.


Today, Phentermine is used to treat:

  • Excessive weight (pre-obese).
  • Obesity of 1, 2, 3, and 4 degree.

Phentermine is an important part of a comprehensive weight loss program. If you want to keep steadily losing excessive fat, take Phentermine in combination with changes in dietary patterns and overall increased activity level.

Phentermine allows you to lose weight steadily from the start of treatment. This anorectic drug provides a rapid and sustained weight loss, only if you comply with the recommended dosing regimen.

Dosing Regimens Optimizing

Phentermine is one of the few anorectic drugs that can be taken at different times of the day. The availability of different dosing regimens provide flexibility to the anti-obesity treatment. For a maximum appetite suppression in the first part of the day, you can take one dose of Phentermine 37,5mg in the morning.

For an effective appetite control in the morning and in the afternoon, you can take one dose of Phentermine 18.75 mg in the morning, and the same dose in the afternoon. To maintain a stable anorectic effect throughout the day, you can take one dose of Phentermine 8 mg in the morning, afternoon and evening.

It should be noted today’s market offers Phentermine pills with immediate and sustained release of the active ingredient. The possibility to choose among different dosage forms of Phentermine improves the efficiency of the obesity treatment.

Phentermine Efficacy

Phentermine is the most frequently purchased and used anorexigenic drug. Phentermine efficacy and safety is confirmed by clinical trials and post-marketing observations, which last for more than 55 years now.

A recent study, which was completed in 2016, studied the effect of Phentermine over the weight loss rate.

This clinical trial was held for 12 weeks. The study involved 77 adults with different types of obesity. All study participants were taking Phentermine, combined with a low calorie diet.

Results of the study showed that Phentermine and healthy diet can help reduce weight by more than 12% of the original with in 12 weeks.

Besides the obvious advantages, Phentermine also has a few drawbacks:

  • Firstly, Phentermine is recommended to be used no more than 12 weeks and this time is not always enough to achieve a perfect shape.
  • Secondly, Phentermine is not intended for the treatment of obesity in pediatric patients aged 12 and less.

Phentermine increases blood pressure and is,therefore, contraindicated in patients with a number of cardiovascular diseases (e.g., heart valve abnormalities or arrhythmia). Phentermine should not be administered to patients with mental illness or with an addiction to alcohol or drugs.

Phentermine can cause side effects, including violation of urination, swelling of the face, rash, changes in libido, dry mouth, diarrhea, constipation, nausea, vomiting, nervousness, anxiety, tremor, dizziness, increased blood pressure and tachycardia.

To reduce the risk of side effects, use the minimum effective dose of Phentermine. One of the drugs, which contains a low dose of Phentermine is sold under the trade mark Qsymia. In addition to the anorectic agent Phentermine, Qsymia contains an additional active ingredient Topiramate.

Qsymia can cause the same side effects, like the drugs that contain only Phentermine. However, due to the low dose of the anorectic agent, the combined drug Qsymia (Phentermine / Topiramate) is much less likely to cause cardiometabolic side effects.