Omeprazole Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Less Severe expression

  • Diarrhea
  • Head Pain
  • Stomach Cramps

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • Acute Infection Of The Nose, Throat Or Sinus

If experienced, these tend to have a Less Severe expression

  • Backache
  • Chest Pain
  • Constipation
  • Cough
  • Dizzy
  • Feel Like Throwing Up
  • Feeling Weak
  • Fever
  • Gas
  • Itching
  • Throwing Up

RARE side effects


If experienced, these tend to have a Severe expression

  • Abnormal Heart Rhythm
  • Abnormal Liver Function Tests
  • Acquired Decrease Of All Cells In The Blood
  • Anemia
  • Atrophic Gastritis
  • Bloody Urine
  • Broken Bone
  • Bronchospasm
  • Clostridium Difficile Infection
  • Decreased Blood Platelets
  • Decreased Neutrophils A Type Of White Blood Cell
  • Decreased White Blood Cells
  • Deficiency Of Granulocytes A Type Of White Blood Cell
  • Elevation Of Proteins In The Urine
  • Erythema Multiforme
  • Eye Disease Caused By Blood Flow Problems
  • Fungal Infection Of The Esophagus
  • Giant Hives
  • Hepatitis
  • Hives
  • Increase Of White Blood Cells
  • Interstitial Nephritis
  • Life Threatening Allergic Reaction
  • Liver Failure
  • Low Amount Of Sodium In The Blood
  • Low Blood Sugar
  • Pancreatitis
  • Stevens-Johnson Syndrome
  • Subacute Cutaneous Lupus Erythematosus
  • Sudden Blindness And Pain Upon Moving The Eye
  • Systemic Lupus Erythematosus
  • Toxic Epidermal Necrolysis
  • Urinary Tract Infection

If experienced, these tend to have a Less Severe expression

  • Abnormal Stool Color
  • Benign Polyps In Stomach
  • Blurred Vision
  • Cramps
  • Dry Eye
  • Dry Mouth
  • Dry Skin
  • Enlarged Breasts
  • Excessive Sweating
  • Fluid Retention In The Legs, Feet, Arms Or Hands
  • Hair Loss
  • High Blood Pressure
  • Inadequate Vitamin B12
  • Irritable Colon
  • Joint Pain
  • Large Purple Or Brown Skin Blotches
  • Loss Of Appetite
  • Low Amount Of Magnesium In The Blood
  • Low Energy
  • Muscle Pain
  • Not Feeling Well
  • Numbness And Tingling
  • Pain
  • Painful, Red Or Swollen Mouth
  • Rash
  • Ringing In The Ears
  • Sensation Of Spinning Or Whirling
  • Skin Inflammation
  • Small Reddish-Purplish Pin-Point Sized Spots On The Skin
  • Sun-Sensitive Skin
  • Swelling Of The Abdomen
  • Taste Problems