Famotidine (Oral Route)

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Side Effects

Along with its needed effects, a medicine 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 doctor immediately if any of the following side effects occur:

• Bleeding gums
• Blistering, peeling, or loosening of the skin
• Blood in the urine or stools
• Bloody, black, or tarry stools
• Chest pain
• Chills
• Cough or hoarseness
• Diarrhea
• Fever
• Fever with or without chills
• General feeling of tiredness or weakness
• High fever
• Itching
• Joint or muscle pain
• Lower back or side pain
• Painful or difficult urination
• Pale skin
• Pinpoint red spots on the skin
• Red, irritated eyes
• Red skin lesions, often with a purple center
• Shortness of breath
• Sore throat
• Sores, ulcers, or white spots on the lips or in the mouth
• Swollen glands
• Unusual bleeding or bruising
• Unusual tiredness or weakness

• Abdominal or stomach pain
• Anxiety
• Burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
• Clay-colored stools
• Dark urine
• Depression
• Difficulty with breathing
• Difficulty with swallowing
• Dizziness
• Dry mouth
• Fainting
• False sense of well-being
• Fast, irregular, pounding, or racing heartbeat or pulse
• Headache
• Hives
• Hyperventilation
• Irritability
• Large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
• Loss of appetite
• Loss of bladder control
• Loss of consciousness
• Mood swings
• Nausea
• Nervousness
• Noisy breathing
• Personality changes
• Puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
• Rash
• Restlessness
• Seizures
• Shaking
• Skin rash
• Swelling around the eyes
• Tightness in the chest
• Total body jerking
• Trouble with sleeping
• Troubled with breathing
• Unpleasant breath odor
• Vision changes
• Vomiting of blood
• Wheezing
• Yellow eyes or skin

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

• Difficulty having a bowel movement (stool)

• Swelling of the breasts or breast soreness in both females and males

• Abdominal or stomach discomfort
• Blemishes on the skin
• Change in taste or bad, unusual or unpleasant (after) taste
• Continuing ringing or buzzing or other unexplained noise in the ears
• Decreased interest in sexual intercourse
• Difficulty with moving
• Dry skin
• Fear
• Hair loss or thinning of the hair
• Hearing loss
• Hives or welts
• Inability to have or keep an erection
• Loss in sexual ability, desire, drive, or performance
• Mood or mental changes
• Muscle cramps
• Muscle stiffness
• Pimples
• Redness of the skin
• Redness of the white part of the eyes
• Seeing, hearing, or feeling things that are not there
• Sleeplessness
• Unable to sleep
• Weight loss

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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