PrescriptionGiant is a FREE prescription savings program that can save you up to 75% on your prescriptions with or without insurance!

Fluxid (Generic Famotidine)

Actual product appearance may differ slightly.

Click the CARD below to print or take a screenshot on your mobile phone or tablet. There is no need to download another app!


If you would like to personalize your card enter your full name in the member name field below the card at this link and click the Update button.

Why is this medication prescribed?

Famotidine is prescribed to treat conditions where the stomach produces too much acid, such as Zollinger-Ellison syndrome (tumors in the pancreas or small intestine that result in increased production of stomach acid) and ulcers (sores on the lining of the stomach or small intestine); gastroesophageal reflux disease (GERD), a condition in which backward flow of acid from the stomach causes heartburn and injury to the esophagus (tube that connect Over-the-counter Famotidine is used to treat and prevent heartburn brought on by acid indigestion and sour stomach brought on by consuming particular foods and beverages. Famotidine belongs to a group of drugs known as H2 blockers. It functions by reducing the production of stomach acid.

How should this medicine be used?

Tablets and liquid suspensions of famotidine are available by prescription for oral consumption. It is typically given twice to four times a day, or once daily at bedtime. Famotidine is available without a prescription in the forms of tablets, chewable tablets, and oral capsules. Typically, it is taken once or twice a day. It is taken 15 to 60 minutes before consuming foods or beverages that may cause heartburn in order to reduce symptoms. Ask your doctor or pharmacist to clarify any instructions on your prescription or package label that you do not understand, and carefully follow them. Famotidine should only be taken as prescribed. Do not alter the dosage, frequency, or duration of use from what has been recommended by your doctor.

Before each usage, shake the beverage thoroughly for 5 to 10 seconds to equally distribute the medication.

Along with a full glass of water, swallow the pills and capsules.

Before consuming the chewable tablets, give them a good chew. Chew the tablet and drink a full glass of water before swallowing.

Take no more than two over-the-counter famotidine tablets, capsules, or chewable tablets in a 24-hour period, and don’t take it for more than two weeks unless your doctor instructs you to. Call your doctor and stop taking famotidine over-the-counter if heartburn, acid indigestion, or sour stomach symptoms persist for more than two weeks.

Other uses for this medicine

Ask your doctor or pharmacist for more details if you believe this drug should be used for something else.

What special precautions should I follow?

Before taking famotidine,

  • If you have an allergy to famotidine, cimetidine (Tagamet), nizatidine (Axid), ranitidine (Zantac), or any other drug, let your doctor and pharmacist know right once.
  • Inform your physician and pharmacist about all prescription and over-the-counter drugs, vitamins, dietary supplements, and herbal products you are taking. Mention any additional heartburn medications if you have any. If a doctor hasn’t instructed you to, avoid using over-the-counter famotidine with any other prescription or over-the-counter drugs for heartburn.
  • Inform your doctor if you have renal problems, trouble swallowing, or phenylketonuria (PKU), a genetic disorder that requires a particular diet to prevent brain damage that could result in severe intellectual incapacity.
  • Inform your doctor if you are expecting, intend to get pregnant, or are nursing a baby. Call your doctor if you become pregnant while taking famotidine.

What special dietary instructions should I follow?

Keep eating normally unless your doctor instructs you otherwise.

What should I do if I forget a dose?

Take the missed dose of prescription famotidine as soon as you remember it if you forget to take it. If the next dose is soon due, skip the missed one and carry on with your regular dosing plan. To make up for a missing dose, do not take a second one.

Famotidine purchased over the counter is often taken as needed. Take the missed dose of over-the-counter famotidine as soon as you remember it if your doctor has prescribed it to you on a regular basis. If the next dose is soon due, skip the missed one and carry on with your regular dosing plan. To make up for a missing dose, do not take a second one.

What side effects can this medication cause?

Famotidine could have negative effects. If any of these symptoms are severe or do not go away, let your doctor know right once:

  • Headache
  • Dizziness
  • Constipation
  • Diarrhea
  • Fussiness (In infants taking famotidine)

Some adverse effects can be very harmful. Although the following signs are not common, if you notice any of them, consult your doctor right away:

  • Hives
  • Skin rash
  • Itching
  • Edema of the hands, feet, ankles, lower legs, cheeks, neck, tongue, lips, and eyes
  • Hoarseness
  • Breathing or swallowing challenges

Other negative effects of famotidine are possible. If you experience any strange issues while taking this medicine, contact your doctor right away.

You or your doctor can submit a report to the Food and Drug Administration’s (FDA) MedWatch Adverse Event Reporting program online at or by phone at 1-800-332-1088 if you have a serious side event.

What should I know about storage and disposal of this medication?

Keep this medication tightly closed in the original container and out of the reach of children. Keep it at room temperature and out of the bathroom and other places with excessive heat and moisture. Keep the liquid from freezing. After 30 days, discard any unused famotidine liquid.

To make sure that pets, kids, and other people cannot take leftover pharmaceuticals, they should be disposed of in a specific manner. You shouldn’t flush this medication down the toilet, though. The best option to get rid of your medication is instead through a medication take-back program. To find out about take-back initiatives in your neighborhood, speak with your pharmacist or get in touch with your city’s waste/recycling department. If you do not have access to a take-back program, you can find more information at the FDA’s Safe Disposal of Medicines website (

As many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and are simple for young children to open, it is crucial to keep all medications out of sight and out of reach of children. Always lock safety caps and promptly stash medication up and away from young children where it is out of their sight and reach to prevent poisoning.

In case of emergency/overdose

Call the poison control hotline at 1-800-222-1222 in the event of an overdose. Additionally, information can be found online at Call 911 right once if the person has collapsed, experienced a seizure, is having difficulty breathing, or cannot be roused.

What other information should I know?

Keep all of your doctor’s appointments.

No one else should take your medication. Any queries you may have regarding medication refills should be directed to your pharmacist.

You should keep a written record of every medication you take, including any over-the-counter (OTC) items, prescription drugs, and dietary supplements like vitamins and minerals. This list should be brought with you whenever you see a doctor or are admitted to the hospital. You should always have this information with you in case of emergencies.

Brand names

  • Fluxid®
  • Pepcid®
  • Pepcid® AC
  • Pepcid® RPD
Copyright © 2023