← Medside — search another medicine

Omeprazole side effects

Aggregated from 3 medical sources. Not medical advice. Always consult a healthcare professional.

73 side effects

Side effectFrequencyWebMDMedlinePlusRxList
Abdominal paincommonStomach painstomach painAbdominal pain
Acid regurgitationcommonAcid regurgitation
AstheniauncommonAsthenia
Back painuncommonBack pain
Black stoolsrareBlood in stoolblack stools
Bloody stoolsrareBlood in stoolbloody stools
Blurred visionblurred vision
Bone loss and fracturesrareBone loss and fracturesfracture of wrists, hips, or spine
Breathing problems or wheezingrareBreathing problems or wheezingshortness of breath
Chest painchest pain
Confusionconfusion
ConstipationcommonconstipationConstipation
CoughuncommonCough
Dark colored urinerareDark colored urineblood in urine
Difficulty breathing or swallowingrareTrouble swallowing or throat tightnessdifficulty breathing or swallowing
Difficulty swallowingrareTrouble swallowing or throat tightnessdifficulty swallowing
DizzinesscommonDizzinessdizzinessDizziness
Drowsinessdrowsiness
Dry mouthdry mouth
Excessive tirednessexcessive tiredness
FatiguerareWeaknessfatigue
FevercommonFeverfever
Flat red rash or blistersrareFlat red rash or blistersrash
FlatulencecommonFlatulence
Flu-syndromeuncommonFlu-syndrome
Fracture of wrists, hips, or spinerareBone loss and fracturesfracture of wrists, hips, or spine
Fundic gland polypsfundic gland polyps
HeadachecommonHeadacheheadacheHeadache
Hiveshives
Hoarsenesshoarseness
HypomagnesemiarareHypomagnesemia
Infection in the nose or throatcommonInfection in the nose or throatupper respiratory infectionUpper respiratory infection
Irregular, fast, or pounding heartbeatrareChanges in heart rate or rhythmirregular, fast, or pounding heartbeat
ItchingrareItching, skin rash, or pale red bumpsitching
JaundicerareJaundice
Joint painrareJoint painnew or worsening joint pain
Kidney problemsrareKidney problems
Loss of appetiteloss of appetite
LupusrareLupus
Lymph nodes swellingrareSwollen lymph nodes
Muscle spasmsrareMuscle spasmsmuscle spasms
NauseacommonNauseanauseaNausea
New or worsening joint painrareJoint painnew or worsening joint pain
Painful red or purple skinrarePainful red or purple skin
PharyngitisuncommonPharyngitis
Racing heartrareRacing heart
RashcommonSkin rash or pale red bumpsrashRash
Red, painful, watery eyesrareRed, painful, watery eyes
RhinitisuncommonRhinitis
SeizuresrareSeizuresseizures
Severe allergic reactionsrareSevere Allergic Reactions
Severe diarrhea with watery stools, stomach pain, or feverSevere diarrhea with watery stools, stomach pain, or feversevere diarrhea with watery stools, stomach pain, or fever
Severe skin reactionsrareSevere Skin Reactions
Severe stomach crampsrareSevere stomach cramps
Shortness of breathrareShortness of breathshortness of breath
Shoulder painshoulder pain
Skin rash or pale red bumpsrareSkin rash or pale red bumpsrash
Sore tonguerareSore tongue
Stomach crampsrareStomach cramps
Stomach paincommonStomach painstomach painAbdominal pain
Swelling in feet, ankles, or legsrareSwelling in feet, ankles, or legs
Swelling of the face, lips, mouth, tongue, or throatrareSwelling of the face, lips, mouth, tongue, or throatswelling of the eyes, face, lips, mouth, throat, or tongue
Taste perversioncommonTaste perversion
Tingling or numbness in hands or feetrareTingling or numbness in hands or feet
Tongue discolorationuncommonTongue discoloration
Trouble swallowing or throat tightnessrareTrouble swallowing or throat tightnessdifficulty swallowing
Uncontrollable shaking of a part of the bodyuncontrollable shaking of a part of the body
Unexplained weight lossunexplained weight loss
Upper respiratory infectioncommonInfection in the nose or throatupper respiratory infectionUpper respiratory infection
Vitamin B-12 deficiencyrareVitamin B-12 deficiency
VomitingcommonVomitingvomitingVomiting
Watery diarrhearareWatery diarrhea
WeaknessrareWeaknessweakness

2 additional sourcesdidn't return structured side-effect data: Mayo Clinic, NHS.

Demographic risk groups

GroupRiskSources
childrenhigher risk of infection in the nose or throatWebMD, MedlinePlus
older adultshigher risk of bone loss and fracturesWebMD
people taking omeprazole for a long timehigher risk of vitamin B-12 deficiencyWebMD
pregnantunknownWebMD
breastfeedingharmWebMD
liver problemsinteractionWebMD
adults and childrenhigher riskMedlinePlus
Asian descenthigher riskMedlinePlus
hypoparathyroidism patientshigher riskMedlinePlus
low vitamin B12 patientshigher riskMedlinePlus
osteoporosis patientshigher riskMedlinePlus
autoimmune disease patientshigher riskMedlinePlus
liver disease patientshigher riskMedlinePlus
people who take high doses of proton pump inhibitorshigher risk of fractureMedlinePlus
people who take proton pump inhibitors for one year or longerhigher risk of fractureMedlinePlus
Pediatric patientsRespiratory system adverse reactionsRxList
Patients greater than 65 years of ageSimilar adverse reaction profileRxList

Medside aggregates publicly available side-effect information for reference only. It is not medical advice. Always consult a healthcare professional before making decisions about medication.

Search another medicine →