Facid 20mg Injection

Reviewed By Dr. Rajeev Sharma, MBA, MBBS

Last updated on 07 Apr 2026 | 02:54 PM (IST)

Facid 20mg Injection is an antacid that reduces the amount of acid your stomach makes. It is used in hospitalized patients to treat certain conditions in which the stomach produces too much acid.

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General Information

Contains

Famotidine (20mg/ml)

Marketer

Intas Pharmaceuticals Ltd

Storage

Store below 30°C

The content is shown in English

Product introduction

It is also used to treat ulcers (sores in the lining of the stomach or intestine) that did not get cured with other medications. It must be administered as an injection by healthcare professionals. The course of the treatment should be completed as per the prescription. It is not recommended to take this medicine in severe stomach disease. You can help the medicine work better by eating smaller meals more often and avoiding spicy or oily foods.

Most people who take it do not have any side effects but the most common ones include headache, dizziness, drowsiness, diarrhea, and constipation. You may also experience mild and transient redness, pain, or swelling at the site of injection. If you do get a side effect, it is usually mild and will go away when you stop taking this medicine or as you adjust to it. Consult your doctor if any of these side effects bother you or do not go away.

Before taking it, you should tell your doctor if you have any kidney or liver diseases so that your doctor can prescribe a suitable dose for you. Also, tell your doctor if you are taking other medications. This medicine is usually considered safe to take during pregnancy and breastfeeding if a doctor has prescribed it. Avoid drinking alcohol as this can increase the amount of acid in your stomach, and make your symptoms worse.

Uses of Facid Injection

Treatment of Heartburn
Gastroesophageal reflux disease (Acid reflux)
Peptic ulcer disease

Benefits of Facid Injection

Treatment of Heartburn
Heartburn is a burning feeling in your chest caused by stomach acids traveling back up towards your throat and mouth (acid reflux). It happens because a muscle above your stomach relaxes too much and allows stomach contents and acid to come back up into your esophagus and mouth. This can be a symptom of indigestion (dyspepsia). Facid 20mg Injection belongs to a group of medicines called histamine 2 antagonists. It works by reducing the amount of acid your stomach makes and relieves the pain associated with heartburn and indigestion.

You should take it exactly as it is prescribed or as it says on the label for it to be effective. Some simple lifestyle changes can help stop or reduce heartburn. Think about what foods trigger heartburn and try to avoid them; eat smaller more frequent meals; try to lose weight if you are overweight and try to find ways to relax. Do not eat within 3–4 hours of going to bed.

Side effects of Facid Injection

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of Facid

Headache
Diarrhea
Drowsiness
Constipation

How to use Facid Injection

Your doctor or nurse will give you this medicine. Kindly do not self administer.

How Facid Injection works

Facid 20mg Injection is a histamine H2 receptor antagonist. It works by reducing the acid produced in the stomach. This helps to relieve acid-related indigestion and heartburn.

Quick tips

It is given as an injection into the veins under the supervision of the doctor.
Facid 20mg Injection is a well tolerated and safe medicine with a very low incidence of side effects.
If you are also taking other medications to treat acidity (e.g., antacid), take them 2 hours before or after taking Facid 20mg Injection.
Avoid taking soft drinks, citrus fruits like orange and lemon, which can irritate the stomach and increase acid secretion.
Inform your doctor if you do not feel better after taking Facid 20mg Injection for 2 weeks as you may be suffering from some other problems.
Inform your doctor if you have ever been diagnosed with kidney disease as dose of your medicine may need to be adjusted.
Do not stop taking the medication without talking to your doctor.
Facid 20mg Injection is a well tolerated and safe medicine with a very low incidence of side effects.
Take it with or without food.
Take Facid 20mg Injection before going to bed if you are taking this medicine once a day. It is very effective in controlling stomach acid that is released when you are asleep.
If you are also taking other medications to treat acidity (e.g., antacid), take them 2 hours before or after taking Facid 20mg Injection.
Avoid taking soft drinks, citrus fruits like orange and lemon, which can irritate the stomach and increase acid secretion.
Inform your doctor if you do not feel better after taking Facid 20mg Injection for 2 weeks as you may be suffering from some other problems.
Inform your doctor if you have ever been diagnosed with kidney disease as dose of your medicine may need to be adjusted.
Do not stop taking the medication without talking to your doctor.

Safety advice

Alcohol

UNSAFE

Do not drink alcohol while you are taking this medicine. Facid 20mg Injection may cause excessive drowsiness when taken with alcohol.

Pregnancy

CONSULT YOUR DOCTOR

Facid 20mg Injection is not recommended during pregnancy as there is positive evidence of fetal risk based on animal studies. However, it may still be prescribed by a doctor in situations where the benefits outweigh the risks.

Breast feeding

CONSULT YOUR DOCTOR

Facid 20mg Injection may be unsafe to use during breastfeeding. Limited human data suggests that the drug may pass into the breastmilk and harm the baby. It should be used only if the expected benefit outweighs the potential risk. Please consult your doctor.

Driving

UNSAFE

Facid 20mg Injection may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.

Kidney

CAUTION

Facid 20mg Injection should be used with caution in patients with kidney disease. Dose adjustment may be needed.

Liver

SAFE IF PRESCRIBED

Facid 20mg Injection is safe to use in patients with liver disease. No dose adjustment is recommended.

Interaction with drugs

Taking Facid with any of the following medicines can modify the effect of either of them and cause some undesirable side effects

Severe

Dasatinib (Oral Route)

Famotidine may reduce blood levels and efficacy of Dasatinib. Famotidine may reduce blood levels and efficacy of Dasatinib.

Severe

Pazopanib (Oral Route)

Famotidine may reduce blood levels of Pazopanib. Famotidine may reduce blood levels of Pazopanib.

Moderate

Cefpodoxime Proxetil (Oral Route)

To take Cefpodoxime Proxetil, ensure a gap of at least 2 hours before taking Famotidine. Famotidine may reduce blood levels of Cefpodoxime Proxetil.

Moderate

Ketoconazole (Oral Route)

If concurrent use is essential, your doctor may recommend you to take Ketoconazole with an acidic drink (like cola), monitor your treatment and adjust the doses as per the observations. Famotidine may reduce blood levels of Ketoconazole.

Moderate

Itraconazole (Oral Route)

Your doctor may monitor the effects of Itraconazole along with your overall treatment and adjust the doses as per the observations. Famotidine may reduce the efficacy of Itraconazole.

Frequently asked questions

How long does it take for Facid 20mg Injection to work?

Facid 20mg Injection starts working as fast as 15 minutes from when it is given. Its effect is seen to last all day or all night.

Can I take Facid 20mg Injection empty stomach?

Facid 20mg Injection may be taken with or without food. It can be taken once daily before bedtime or twice daily in the morning and before bedtime, as recommended.

How long does it take for Facid 20mg Injection to start working?

Facid 20mg Injection starts working as fast as within 15 minutes from when it is given. Its effect is seen to last all day or all night.

What is the difference between Facid 20mg Injection and Omeprazole?

Facid 20mg Injection and Omeprazole belong to different groups of medicines. While Facid 20mg Injection belongs to histamine H2 antagonists group, Omeprazole belongs to proton pump inhibitors group. Both these medicines work by reducing the amount of acid made by the stomach, to relieve the symptoms and allow healing.

What are the serious side effects of Facid 20mg Injection?

Facid 20mg Injection may have some serious side effects, but these are rare. These side effects may include hives, skin rash, itching, hoarseness and difficulty in breathing or swallowing. Another serious symptom may be swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs. Inform your doctor in case you notice any of the mentioned symptoms.

What are the dos and don’ts while taking Facid 20mg Injection?

Avoid taking aspirin and other painkillers used to treat arthritis, period pain or headache. These medicines may irritate the stomach and make your condition worse. Contact your doctor who may suggest other medicines. Avoid coffee, tea, cocoa and cola drinks because these contain ingredients that may irritate your stomach. Eat smaller, more frequent meals. Eat slowly and chew your food carefully. Try not to rush at meal times. You should stop or cut down on smoking.

Is Facid 20mg Injection safe for long-term use?

There is limited data available on whether Facid 20mg Injection can be used for a long term or not, but it is a relatively safe medicine. You should take it for the duration advised by your doctor. Do not take over-the-counter Facid 20mg Injection for longer than 2 weeks unless advised by your doctor.

Fact Box

Chemical Class

2,4- disubstituted thiazoles

Habit Forming

Therapeutic Class

GASTRO INTESTINAL

Action Class

Histamine Type-2 Receptor Antagonists (H2 Blockers)

References

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Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Intas Pharmaceuticals Ltd
Address: Chinubhai Centre, Off. Nehru Bridge, Ashram Road, Ahmedabad - 380009. Gujarat. India.

Vendor Details

Country of origin: India

Lab tests offered by us

Why we need a prescription?

Facid 20mg Injection

Save more with additional offers

General Information

Contains

Marketer

Storage

Product introduction

Uses of Facid Injection

Benefits of Facid Injection

Side effects of Facid Injection

How to use Facid Injection

How Facid Injection works

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Interaction with drugs

Dasatinib (Oral Route)

Pazopanib (Oral Route)

Cefpodoxime Proxetil (Oral Route)

Ketoconazole (Oral Route)

Itraconazole (Oral Route)

Frequently asked questions

How long does it take for Facid 20mg Injection to work?

Can I take Facid 20mg Injection empty stomach?

How long does it take for Facid 20mg Injection to start working?

What is the difference between Facid 20mg Injection and Omeprazole?

What are the serious side effects of Facid 20mg Injection?

What are the dos and don’ts while taking Facid 20mg Injection?

Is Facid 20mg Injection safe for long-term use?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

References

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

Lab tests offered by us

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