Because these reactions are voluntarily reported from a population of uncertain size, it is not always possible to reliably estimate their actual frequency or establish a causal relationship to drug exposure.
Omeprazole
Cardiovascular: angina, tachycardia, bradycardia, palpitations, elevated blood pressure, peripheral edema
Endocrine: gynecomastia
Gastrointestinal: pancreatitis including fatal pancreatitis, anorexia, irritable colon, fecal discoloration, mucosal atrophy of the tongue, stomatitis, abdominal swelling, dry mouth, microscopic colitis, fundic gland polyps, gastroduodenal carcinoids in patients with Zollinger-Ellison syndrome on long-term treatment as a manifestation of the underlying condition associated with such tumors
Hepatic: fatal hepatic failure or necrosis, hepatic encephalopathy, hepatocellular disease, cholestatic disease, mixed hepatitis, jaundice
Metabolism and Nutritional disorders: hypoglycemia, hypomagnesemia, with or without hypocalcemia and/or hypokalemia, hyponatremia, weight gain
Musculoskeletal: muscle weakness, myalgia, muscle cramps, joint pain, leg pain, bone fracture.
Nervous System/Psychiatric: depression, agitation, aggression, hallucinations, confusion, insomnia, nervousness, apathy, somnolence, anxiety, dream abnormalities, tremors, paresthesia, vertigo
Respiratory: epistaxis
Skin and subcutaneous tissue disorders: SCAR such as SJS, TEN, DRESS, AGEP, photosensitivity, urticaria, pruritus, petechiae, purpura, alopecia, dry skin, hyperhidrosis
Special Senses: tinnitus, taste perversion
Ocular: optic atrophy, optic neuritis, dry eye syndrome, ocular irritation, blurred vision, double vision
Urogenital: hematuria, proteinuria, elevated serum creatinine, microscopic pyuria, urinary tract infection, glycosuria, urinary frequency, testicular pain, erectile dysfunction
Hematologic: Agranulocytosis, hemolytic anemia, pancytopenia, neutropenia, anemia, thrombocytopenia, leukopenia, leukocytosis
Amoxicillin
Gastrointestinal: Drug-induced enterocolitis syndrome (DIES), black hairy tongue
Liver: hepatic dysfunction, cholestatic jaundice, cholestasis, acute cytolytic hepatitis
Renal: crystalluria [see Overdosage (10)]
Hemic and Lymphatic Systems: anemia, hemolytic anemia, thrombocytopenia, thrombocytopenic purpura, eosinophilia, leukopenia, and agranulocytosis
Central Nervous System: hyperactivity, agitation, anxiety, insomnia, confusion, convulsions, aseptic meningitis, behavioral changes, and/or dizziness
Skin and subcutaneous tissue disorders: SCAR, such as SJS, TEN, DRESS, and AGEP, and linear IgA bullous dermatosis.
Rifabutin
Blood and lymphatic system disorders: agranulocytosis, lymphopenia
Skin and subcutaneous tissue disorders: SCAR, such as SJS, TEN, DRESS, and AGEP.