Guanfacine HCL ER Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Less Severe expression

  • Drowsiness
  • Dry Mouth
  • Inducing Of A Relaxed Easy State
  • Low Energy
  • Weight Gain

INFREQUENT side effects


If experienced, these tend to have a Less Severe expression

  • Abnormally Low Blood Pressure
  • Altered Interest In Having Sexual Intercourse
  • Chronic Trouble Sleeping
  • Confused
  • Constipation
  • Dizzy
  • Easily Angered Or Annoyed
  • Feel Like Throwing Up
  • Feeling Weak
  • Frequent Urination
  • Head Pain
  • Heart Throbbing Or Pounding
  • Inability To Have An Erection
  • Indigestion
  • Loss Of Appetite
  • Nightmares
  • Problems With Bladder Control
  • Sluggishness
  • Throwing Up

RARE side effects


If experienced, these tend to have a Severe expression

  • Abnormal Functioning Of The Sinus Node Of The Heart
  • Atrioventricular Heart Block
  • Chest Pain
  • Disorder Of The Brain
  • Fast Heartbeat
  • Having Thoughts Of Suicide
  • Hypersensitivity Drug Reaction
  • Seizures
  • Skin Rash With Sloughing

If experienced, these tend to have a Less Severe expression

  • Blurred Vision
  • Depression
  • Feeling Anxious
  • Feeling Faint
  • Hair Loss
  • Hallucination
  • Intense Abdominal Pain
  • Involuntary Quivering
  • Itching
  • Joint Pain
  • Leg Cramps
  • Loss Of Skin Color
  • Muscle Pain
  • Not Feeling Well
  • Numbness And Tingling
  • Occasional Numbness, Prickling, Or Tingling Of Fingers And Toes
  • Pink Eye
  • Rash
  • Sensation Of Spinning Or Whirling
  • Skin Inflammation
  • Slow Heartbeat
  • Suicidal
  • Taste Problems
  • Trouble Breathing
  • Visible Water Retention