Among the various weight loss treatments available in the market, Phentermine diet pills are the most powerful. It causes weight reduction by curbing the appetite of the patient. But due to its addictive nature and various side effects it is prescribed for not more than 6 weeks by the doctors. If taken without anything else, phentermine can cause psychological and physical dependence because of its habit forming nature. You should not take phentermine pills for a long time period as its effect gradually decreases after few weeks. If you feel these pills are not working efficiently after some days of weight reduction program, then do not increase its dosage on your own. Instead it’s advisable to consult your doctor. Your doctor may accordingly increase or reduce your dose or may stop the use o the drug for sometime.

Using phentermine for a longer time than that prescribed by the doctor in order to continue reducing weight can lead to unwanted outcomes like elevated blood pressure, insomnia, hypertension, irritability, anxiety, dry mouth, decreased libido, confusion, dizziness, diarrhea, headache, nausea, skin rash, stomach pain and fatigue. Instead it should be taken with proper balanced diet and a good exercise regime to get the best results.