Bactyl Syrup

Reviewed By Dr. Rajeev Sharma, MBA, MBBS

Last updated on 25 Nov 2025 | 03:07 PM (IST)

Bactyl Syrup is a combination medicine that is used to treat diarrhea and dysentery. It prevents the growth of microorganisms to treat the infection.

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General Information

Contains

Nalidixic Acid (300mg)+ Metronidazole (200mg)

Marketer

J.K. Pharma

Storage

Store below 30°C

The content is shown in English

Product introduction

Bactyl Syrup is a prescription medicine that is advised to be taken as suggested by the doctor. It should be taken with food, but it must be taken at a fixed time to ensure better efficacy. Do not consume more than the recommended dose, as an overdose of it may have harmful effects on your body. If you miss a dose, take it as soon as you remember. The treatment must be completed even if you feel better to ensure a complete recovery.

Bactyl Syrup may lead to some side effects such as nausea, vomiting, stomach pain, loss of appetite, headache, etc. To overcome any such side effects, it is advised to eat a healthy balanced diet and drink plenty of fluid. If any of the side effects get aggravated, contact your doctor immediately. If you experience any allergic reaction (rashes, itching, swelling, shortness of breath, etc.), you must consult your doctor immediately.

Before taking this medicine, you should tell your doctor if you have any problems with your liver or kidneys. Also, tell your doctor if you are on any medication for any health condition. Pregnant or breastfeeding women should also consult with the doctors before taking it. Avoid drinking alcohol as it can cause excessive dizziness with this medicine. It usually does not impair your ability to drive, but you should not drive if it makes you feel sleepy or dizzy. If you are a known allergic to the medicine, you must refrain from using this medicine and consult your doctor. It is advised to take proper rest during the course of treatment for the medicine to work effectively.

Uses of Bactyl Syrup

Benefits of Bactyl Syrup

Diarrhea
Diarrhea is a condition marked by frequent, loose, or watery stools that can lead to weakness and dehydration. Bactyl Syrup helps fight the infection-causing germs in the gut, reducing the frequency of bowel movements and controlling associated symptoms like stomach cramps. This helps restore normal digestion and provides relief so that the body can recover faster.

Dysentery
Dysentery is a severe intestinal infection that causes bloody or mucus-filled stools, abdominal pain, and fever. Bactyl Syrup works by targeting and removing the harmful bacteria and parasites responsible for the infection. It helps reduce inflammation, control symptoms, and prevent complications, leading to improved gut health and faster recovery.

Side effects of Bactyl Syrup

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 Bactyl

Nausea
Dryness in mouth
Metallic taste
Headache

How to use Bactyl Syrup

Take this medicine in the dose and duration as advised by your doctor. Check the label for directions before use. Measure it with a measuring cup and take it by mouth. Shake well before use. Bactyl Syrup should be taken with or after food.

How Bactyl Syrup works

Bactyl Syrup is a combination of two antibiotics: Nalidixic Acid and Metronidazole. Nalidixic Acid works by preventing the bacterial cells from dividing and repairing, thereby killing the bacteria. Metronidazole kills parasites and anaerobic bacteria that cause infections by damaging their DNA. Together, they treat your infection effectively.

Quick tips

Your doctor has prescribed this combination medicine for the treatment of diarrhea and dysentery.
Diarrhea can cause dehydration. Drink plenty of fluids to help rehydrate you.
Consult your doctor if your diarrhea lasts for more than 48 hours.
Do not use Bactyl Syrup if you have blood in your stool or if you are severely constipated.
It may cause dizziness and sleepiness. Do not drive or do anything that requires mental focus until you know how it affects you.
Avoid consuming alcohol when taking Bactyl Syrup as it may irritate your stomach and also cause excessive drowsiness.
Notify your doctor if you feel pain in your tendons, numbness, or tingling sensations.
Inform your doctor if you are pregnant or planning to conceive or breastfeeding.
Your doctor has prescribed this combination medicine for the treatment of diarrhea and dysentery.
Diarrhea can cause dehydration. Drink plenty of fluids to help rehydrate you.
Consult your doctor if your diarrhea lasts for more than 48 hours.
Do not use Bactyl Syrup if you have blood in your stool or if you are severely constipated.
It may cause dizziness and sleepiness. Do not drive or do anything that requires mental focus until you know how it affects you.
Avoid consuming alcohol when taking Bactyl Syrup as it may irritate your stomach and also cause excessive drowsiness.
Notify your doctor if you feel pain in your tendons, numbness, or tingling sensations.
Inform your doctor if you are pregnant or planning to conceive or breastfeeding.

Safety advice

Alcohol

UNSAFE

Consumption of alcohol with Bactyl Syrup may cause a disulfiram-like reaction, leading to symptoms such as flushing, increased heart rate, low blood pressure, nausea, lightheadedness, and severe headache.

Pregnancy

CONSULT YOUR DOCTOR

The safety of Bactyl Syrup during pregnancy has not been established. There are no adequate and well-controlled studies in pregnant women, and animal data on reproductive toxicity are insufficient. Your doctor will weigh the benefits and any potential risks before prescribing.

Breast feeding

CAUTION

Bactyl Syrup should be used with caution during breastfeeding. Breastfeeding should be held until the treatment of the mother is completed and the drug is eliminated from the body.
If a single dose of Bactyl Syrup is used, it is recommended to hold breastfeeding for 12-24 hours to allow the removal of the drug.

Driving

UNSAFE

Bactyl Syrup may cause side effects that could affect your ability to drive.
Bactyl Syrup may make you feel sleepy, dizzy, confused. You may have hallucinations, fits (convulsions) or temporary eyesight problems (such as blurred or double vision) affecting your ability to drive.

Kidney

CAUTION

Bactyl Syrup should be used with caution in patients with kidney disease. Dose adjustment may be needed.
Regular monitoring of kidney function tests is advised if this medicine is to be taken for a long time.

Liver

CAUTION

Bactyl Syrup should be used with caution in patients with liver disease. Dose adjustment may be needed.

Frequently asked questions

What if I don't get better after using Bactyl Syrup?

Inform your doctor if you don't feel better after finishing the full course of treatment. Also, inform him if your symptoms are getting worse while using this medicine.

Can I stop taking Bactyl Syrup when I feel better?

No, do not stop taking Bactyl Syrup and complete the full course of treatment even if you are feeling better. Your symptoms may improve before the infection is completely cured.

What if I miss my dose?

Take Bactyl Syrup as soon as you remember it. However, do not take it if it's almost time for your next dose. Also, do not take an extra dose to make up for your missed dose.

Fact Box

Habit Forming

Therapeutic Class

GASTRO INTESTINAL

Related lab tests

Stool Examination R/M

References

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Disclaimer

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: J.K. Pharma
Address: F-13/14, Shreeji Complex, Near Lalji Mulji Transport Sarkhej Sanand Chokdi, Opposite Sukh Sagar Hotel, Sarkhej, Ahmedabad-360007, Gujarat, India

Vendor Details

Country of origin: India

Lab tests offered by us

Why we need a prescription?

Bactyl Syrup

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General Information

Contains

Marketer

Storage

Product introduction

Uses of Bactyl Syrup

Benefits of Bactyl Syrup

Side effects of Bactyl Syrup

How to use Bactyl Syrup

How Bactyl Syrup works

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Frequently asked questions

What if I don't get better after using Bactyl Syrup?

Can I stop taking Bactyl Syrup when I feel better?

What if I miss my dose?

Fact Box

Habit Forming

Therapeutic Class

Related lab tests

Stool Examination R/M

References

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

Lab tests offered by us

Related/Popular tests