People who want to shed a few of those excess pounds may experience weight loss while using a medication called phentermine. Phentermine, when used in conjunction with a healthy diet and regular exercise, aids in weight loss by suppressing a person's normal hunger response. As of 2010, this medication is not available in the United States. Before beginning treatment with this appetite suppressant, patients should be aware of the side effects of phentermine.
Unpleasant Taste or Dry Mouth
This orally-administered medication may leave an unpleasant taste within the mouth following treatment, MedlinePlus warns. Additionally, certain people may experience dry mouth side effects, such as increased thirst, sticky or thick saliva, throat irritation or difficulty swallowing. These side effects may contribute to upset stomach symptoms in affected people.
Upset Stomach
After taking a dose of phentermine, people may experience upset stomach side effects such as nausea or vomiting. Certain people may also develop bowel movement problems, including diarrhea or constipation, Drugs.com reports. These gastrointestinal complications may occur in conjunction with abdominal cramping, gas or bloating. If these side effects persist or become severe, affected people should contact a doctor.
Restlessness or Insomnia
Treatment with this weight loss medication may induce unusual feelings of restlessness or nervousness in people. Increased excitability may lead to sleeping problems, such as insomnia, which can impact a person's ability to fall asleep or stay asleep during the night, RxList explains. People who experience sleeping difficulties may feel more fatigued during the day and may have difficulty remaining attentive, alert or focused during normal activities.
Sexual Changes
Sexual changes may arise in people following treatment with phentermine. Both men and women may experience changes in their sex drive, such as diminished libido. Men taking phentermine may have difficulty becoming aroused during sexual stimulation, a side effect referred to as impotence, Drugs.com warns. If these side effects are bothersome, people should consult a medical professional for additional guidance and care.
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