Pepcid
Over-the-counterWhat is Pepcid?
Pepcid is an over-the-counter medication that treats heartburn and reduces stomach acid. The active ingredient is famotidine, which belongs to a class of drugs called H2 blockers. Pepcid works by blocking histamine receptors in your stomach that trigger acid production.
You can use Pepcid to prevent heartburn before eating or to relieve symptoms after they start. It begins working within 15 to 30 minutes and lasts up to 12 hours. Many people choose Pepcid because it offers longer relief than antacids like Tums or Rolaids.
Pepcid is available in regular strength and maximum strength tablets. You can also find it in chewable tablets and oral suspension forms. The medication is safe for adults and children over 12 years old when used as directed.
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Common uses
- Relieving heartburn caused by acid reflux
- Preventing heartburn before eating trigger foods
- Treating acid indigestion and sour stomach
- Managing symptoms of gastroesophageal reflux disease, or GERD
- Reducing stomach acid production throughout the day
How it works
Pepcid blocks special receptors in your stomach called H2 receptors. These receptors normally tell your stomach cells to make acid when histamine attaches to them. By blocking these receptors, Pepcid stops the signal that creates stomach acid. This reduces the amount of acid your stomach produces.
Less stomach acid means less irritation to your esophagus, the tube connecting your mouth to your stomach. When acid backs up into your esophagus, you feel heartburn and discomfort. Pepcid helps prevent this backup by reducing acid at the source. The effect lasts for several hours, giving you extended relief from symptoms.
Taking Pepcid? Monitor your levels.
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Dosage information
For adults and children 12 years and older, the typical dose is 10 mg to 20 mg taken once or twice daily. To prevent heartburn, take one tablet 15 to 60 minutes before eating or drinking foods that cause symptoms. To relieve heartburn, take one tablet with water when symptoms occur. Do not take more than 40 mg in 24 hours unless directed by your doctor. Do not use for more than 14 days in a row without talking to a healthcare provider.
Side effects
- Headache
- Dizziness
- Constipation
- Diarrhea
- Stomach cramps or discomfort
Serious side effects are rare but can include confusion, hallucinations, fast or irregular heartbeat, and severe stomach pain. Stop taking Pepcid and seek medical help if you experience difficulty swallowing, bloody stools, vomiting blood, or chest pain that spreads to your jaw or shoulder. Long-term use of acid reducers may lower vitamin B12 absorption, which can lead to deficiency over time.
Drug interactions
- Other heartburn medications, especially proton pump inhibitors like omeprazole
- Antacids containing aluminum or magnesium, which may reduce Pepcid absorption
- Blood thinners like warfarin, as Pepcid may affect blood clotting
- Medications that need stomach acid for absorption, such as certain antifungal drugs
- Alcohol, which can increase stomach acid and reduce Pepcid effectiveness
Blood test monitoring
Long-term use of Pepcid and other acid reducers can affect vitamin B12 absorption in your digestive system. Your stomach acid normally helps release B12 from food so your body can absorb it. When you reduce stomach acid for extended periods, you may absorb less B12. Low B12 levels can cause fatigue, weakness, nerve problems, and anemia. If you take Pepcid regularly for more than a few weeks, consider getting your B12 levels checked. Rite Aid offers blood testing services that measure B12 along with 200 other biomarkers. Testing twice a year helps you catch deficiencies early before symptoms develop.
Taking Pepcid? Monitor your levels.
- Track how your body responds
- Catch side effects early with blood work
- Share results with your doctor
Frequently asked questions
Pepcid typically starts working within 15 to 30 minutes after you take it. You should feel relief from heartburn and acid symptoms during this time. The effects last up to 12 hours, providing extended protection. For prevention, take Pepcid 15 to 60 minutes before eating trigger foods.
You can take Pepcid daily for up to 14 days in a row without seeing a doctor. If you need relief for longer than 14 days, talk to a healthcare provider. Daily use beyond 2 weeks may indicate a more serious condition that needs medical attention. Long-term use can also affect nutrient absorption, especially vitamin B12.
Antacids like Tums neutralize acid that is already in your stomach and work within minutes. Pepcid prevents your stomach from making acid in the first place. Pepcid takes longer to start working but provides relief for up to 12 hours. Antacids typically last only 1 to 2 hours.
Yes, if you take Pepcid regularly for several weeks or months, you should check your B12 levels. Acid reducers can lower B12 absorption because stomach acid helps release this vitamin from food. Low B12 causes fatigue, weakness, and nerve problems. Testing your levels twice a year helps you catch deficiencies early.
Pepcid is generally safe to take with most medications, but some interactions exist. Avoid taking it with other acid reducers unless your doctor approves. Space antacids at least 1 hour apart from Pepcid for best absorption. Tell your doctor about all medications you take, including vitamins and supplements.
Pepcid is generally considered safe during pregnancy, but you should talk to your doctor first. Heartburn is common during pregnancy due to hormone changes and pressure on your stomach. Your healthcare provider can help you decide if Pepcid is right for your situation. They may recommend starting with lifestyle changes before trying medication.
If Pepcid no longer relieves your symptoms, see a healthcare provider. This may mean you have a more serious condition that needs different treatment. Your doctor might prescribe a stronger medication or order tests to check for ulcers or other problems. Do not increase your Pepcid dose beyond the package directions without medical advice.
Alcohol can trigger heartburn and increase stomach acid production, which works against Pepcid. Drinking alcohol while taking Pepcid may make your symptoms worse or reduce the medication's effectiveness. If you choose to drink, do so in moderation and avoid known trigger beverages like wine or beer.
You can buy Pepcid at most pharmacies and drugstores without a prescription. Rite Aid will carry Pepcid when our pharmacy services return soon. You can find it in the digestive health or heartburn relief section. Both name-brand Pepcid and generic famotidine versions are available.
Regular strength Pepcid contains 10 mg of famotidine per tablet. Maximum strength contains 20 mg per tablet, which is twice the dose. Maximum strength provides longer-lasting relief for more severe heartburn. Start with regular strength to see if it works for you before trying maximum strength.