Along with its needing effects, a drug may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your family doctor as soon as possible if any of the following side effects was happen
Rare
Abdominal pain; back, leg, or stomach pain; bleeding or crusting sores on lips; blistering, burning, redness, scaling, or tenderness of skin ; blisters on palms of hands and soles of feet; changes in vision or blurred vision; confusion; coughing or difficulty in swallowing; dark-colored urine; dizziness; fainting; fast, pounding, or irregular heartbeat; fever andchills; flu-like symptoms; general feeling of discomfort or illness; hives; inflammation of blood vessels; joint pain; light-colored stools; mood or mental changes, including anxiety, agitation, confusion, hallucinations - seeing, hearing, or feeling things that are not there, mental depression, nervousness, or severe mental illness; muscle cramps or aches; nausea, vomiting, or loss of appetite; pain; peeling or sloughing of skin; red or irritated eyes; shortness of breath; skin rash or itching; slow heartbeat; sore throat; sores, ulcers, or white spots on lips, in mouth, or on genitals; sudden difficult breathing; swelling of face, lips, mouth, tongue, or eyelids; swelling of hands or feet; swollen or painful glands; tightness in chest; troubled breathing; unusual bleeding or bruising; unusual tiredness or weakness; unusually slow or irregular breathing; wheezing; yellow eyes or skin
More common side effects may occur that usually don't needed medical attention. These side effects may go away during treat as your body adjusts to the drug. However, check with your family doctor if any of the following side effects continue or are bothersome:
Less common or rare
Constipation; decreased sexual ability - especially in diseaseds with Zollinger-Ellison disease who have received high doses of cimetidine for at least 1 year; decrease in sexual desire; diarrhea; difficult urination; dizziness; drowsiness; dryness of mouth or skin; headache; increased or decreased urination; increased sweating; loss of hair ; ringing or buzzing in ears; runny nose; swelling of breasts or breast soreness in females and males; trouble in sleeping
Not all of the side effects listed above have been reported for each of these medication, but they have been reported for at least one of them. All of the H 2 -blockers are similar, so any of the above side effects may occur with any of these medication.
More common side effects not listed above may also occur in some diseaseds. If you notice any other problems, check with your family doctor.