Phentermine HCL Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Severe expression

  • High Blood Pressure

If experienced, these tend to have a Less Severe expression

  • Difficulty Sleeping
  • Dry Mouth
  • Nervousness
  • Taste Impairment

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • Abnormal Heart Rhythm
  • Hives
  • Inflammation Of The Skin Due To An Allergy

If experienced, these tend to have a Less Severe expression

  • A Skin Rash
  • Agitation
  • Altered Interest In Having Sexual Intercourse
  • An Extreme Sense Of Wellbeing Called Euphoria
  • Blurred Vision
  • Constipation
  • Diarrhea
  • Difficult Or Painful Urination
  • Dizziness
  • Fast Heartbeat
  • Head Pain
  • Heart Throbbing Or Pounding
  • Intense Abdominal Pain
  • Muscle Tremors
  • Temporary Redness Of Face And Neck

RARE side effects


If experienced, these tend to have a Severe expression

  • A Low Supply Of Oxygen Rich Blood To The Heart
  • Heart Valve Disease
  • Mental Problems From Taking The Drug
  • Pulmonary Hypertension

If experienced, these tend to have a Less Severe expression

  • An Increased Need To Urinate Often
  • Excessive Sweating
  • Feelings Of Dissatisfaction, Sadness, And Unease
  • Nausea
  • The Inability To Have An Erection

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CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.