Famotidine
“This page provides important general information for pet owners whose animals have been prescribed Famotidine during a consultation by Dr Noor.”
Key Information
- This medicine is used to treat too much stomach acid or to lower stomach acid.
- It tends to work best if it is given about 30 minutes before your pet eats.
- Most animals handle it well. Possible unwanted effects can include throwing up, eating less, loose stools, or trouble passing stools.
Note: This handout is meant to answer common questions. It does not include every detail that exists about this medicine. It also does not replace medical guidance from your veterinary care team.
Description
- This is an acid-reducing medicine. It works by blocking one of the body’s signals that tells the stomach to make acid (a “histamine-2 blocker,” meaning it blocks a histamine signal linked to acid production).
- It comes as tablets, capsules, and a liquid you give by mouth.
Other common names
- Pepcid
Uses
This medicine is not specifically approved for animals, but it is approved for people. Your veterinarian may still choose to use it in animals (this is called “extra-label” use). It may be used in dogs, cats, and other species to lower stomach acid to help with problems such as sores in the stomach or intestines, or acid coming up from the stomach (acid reflux).
Before this medication is given
No medicine is completely safe for every patient. Talk with your veterinarian about:
- Any other medicines or supplements your animal is currently receiving
- Any health problems your animal has now, or has had before
- Any bad reactions or unwanted effects your animal has had from medicines in the past
- The possible risks of using this medicine if your animal is pregnant or nursing
Warnings for animals
Do not use:
- In animals that have an allergy to this medicine
Use with caution:
- In animals that have kidney disease
Some animal sports or competitions do not allow certain medicines. If your animal competes, check the rules while your animal is taking any medicine.
Warnings for humans
- Clean your hands after you handle any medicine.
How do I give this Famotidine medication?
Give this medicine exactly the way your veterinarian ordered it. Follow the directions on the prescription label every time.
- Give it when the stomach is empty, about 30 minutes before meals. If your animal throws up after getting it on an empty stomach, give it with a treat or a small amount of food.
- If you are using a liquid form, shake it well each time before you measure a dose.
- For liquids, use an oral dosing syringe, a medicine cup, or a dosing spoon. Do not use kitchen spoons or other household measuring tools.
Side effects
Famotidine is usually handled well. Unwanted effects that may happen include:
- Vomiting
- Constipation or diarrhea
- Decreased appetite
Call your veterinarian if any of these problems are serious, keep happening, or get worse.
How will I know it's working?
This medicine is used to treat or reduce stomach acid.
- Many animals begin to feel better within 1 to 2 days. Contact your veterinary clinic if your animal’s problems get worse or do not get better.
How long will the medication effects last?
After the final dose, the medicine will no longer work within 24 hours.
It may stay active longer if your animal’s kidneys do not work as well.
How long do I give it for?
Your veterinarian may prescribe this medicine for different time periods. Keep giving it for the full length of time your veterinarian instructs. You may need to get more refills.
Overdose
If you see an overdose happen, or you think one may have happened, contact your veterinarian right away.
If you can, have the medicine container or label with you.
Missed dose
In most situations, if you forget a dose:
- Give it as soon as you remember, and then go back to the usual schedule.
If it is almost time for the next dose:
- Do not give the missed dose.
- Give the next dose at the regular time.
- Keep following the normal schedule.
If you are not sure what to do, call your veterinary clinic. Do not give two doses at once or give extra doses.
Storage
- Keep it in the original container at room temperature.
- Keep it away from light.
- Store it where children and animals cannot reach it.
Disposal
Liquid forms must be discarded 30 days after they are mixed with water.
Do not put this medicine into the toilet or pour it into a sink. Ways to get rid of unused or expired medicine include:
- Drug take-back sites: This is the best option when available. To locate one, contact your local police department or your local waste management office.
- Home disposal: Mix the medicine with used coffee grounds or kitty litter, place it in a sealed plastic bag, and throw it in the trash.
Do not keep leftover medicine for later use and do not give it to anyone else.
Questions?
Speak with your veterinarian.
“Disclaimer: The information on this page is provided as general educational material only. Every animal’s health situation is unique, and treatment decisions must be based on a full veterinary assessment. Always follow the specific instructions given during your consultation, and contact the prescribing veterinarian if you have any concerns.”