


A Nil Tablet
Metronidazole (200mg)+ Diloxanide (250mg)
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A Nil Tablet is a combination of two antibiotics which is used to treat diarrhea and dysentery. It prevents the growth of the infection-causing microorganisms.
Written By Dr. Anuj Saini, MMST, MBBS,
Reviewed By Dr. Sachin Gupta, MD Pharmacology, MBBS,
Last updated on 08 Aug 2026 | 01:09 AM (IST)
Written By Dr. Anuj Saini, MMST, MBBS,
Reviewed By Dr. Sachin Gupta, MD Pharmacology, MBBS,
Last updated on 08 Aug 2026 | 01:09 AM (IST)
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General Information
Contains
Metronidazole (200mg)+ Diloxanide (250mg)
Marketer
Pan Pharmaceuticals Ltd
Storage
Store below 30°C
The content is shown in English



Product introduction
A Nil Tablet is a prescription medicine. It is advised to take it as the prescription. 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 this 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.
A Nil Tablet may lead to some side effects such as nausea, headaches, dryness of mouth, 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 are taking any medicines for any health condition. Pregnant or breastfeeding women should also consult with their doctor before taking it. Avoid drinking alcohol as it can cause excessive drowsiness 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.
A Nil Tablet may lead to some side effects such as nausea, headaches, dryness of mouth, 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 are taking any medicines for any health condition. Pregnant or breastfeeding women should also consult with their doctor before taking it. Avoid drinking alcohol as it can cause excessive drowsiness 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.
Benefits of A Nil Tablet
Diarrhea
Diarrhea is an increase in the frequency of bowel movements or loose watery bowel movements. It can most commonly occur due to an infection of the digestive tract. A Nil Tablet helps to treat diarrhea that is caused due to bacteria or parasitic worm infections. This medicine can relieve frequent loose motions and also help you to stay well by preventing them from coming back. You need to take this medicine regularly to get the most out of it and you should drink plenty of fluids while taking it to make sure you stay hydrated.
Diarrhea is an increase in the frequency of bowel movements or loose watery bowel movements. It can most commonly occur due to an infection of the digestive tract. A Nil Tablet helps to treat diarrhea that is caused due to bacteria or parasitic worm infections. This medicine can relieve frequent loose motions and also help you to stay well by preventing them from coming back. You need to take this medicine regularly to get the most out of it and you should drink plenty of fluids while taking it to make sure you stay hydrated.
Dysentery
Dysentery or amoebic dysentery is a parasitic infection of the intestines that occurs mostly due to intake of contaminated food or water. The symptoms include loose stools (diarrhea), stomach cramps and stomach pain. A Nil Tablet helps to treat this infection by killing the infection causing parasites. It relieves these symptoms and also helps you to stay well by preventing them from coming back. You need to take this medicine regularly to get the most out of it and you should drink plenty of fluids while taking it to make sure you stay hydrated.
Dysentery or amoebic dysentery is a parasitic infection of the intestines that occurs mostly due to intake of contaminated food or water. The symptoms include loose stools (diarrhea), stomach cramps and stomach pain. A Nil Tablet helps to treat this infection by killing the infection causing parasites. It relieves these symptoms and also helps you to stay well by preventing them from coming back. You need to take this medicine regularly to get the most out of it and you should drink plenty of fluids while taking it to make sure you stay hydrated.
Side effects of A Nil Tablet
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 A Nil
- Nausea
- Headache
- Dryness in mouth
- Metallic taste
- Flatulence
How to use A Nil Tablet
Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. A Nil Tablet should be taken with or after food.
How A Nil Tablet works
A Nil Tablet is a combination of two medicines: Metronidazole and Diloxanide. Metronidazole is an antibiotic. It kills the bacteria and other microorganisms that cause infections by damaging the DNA. Diloxanide is an amoebicide. It works inside the large intestine to kill the infection causing amoeba (parasites). Together, they treat your infection effectively.
Quick tips
- A Nil Tablet should be taken with food but at the same time every day.
- Do not skip any doses and finish the full course of treatment even if you feel better.
- It may cause dizziness. Don't drive or do anything that requires mental focus until you know how medicine affects you.
- It is advisable to stay hydrated and drink plenty of water to overcome medicine side effects.
- Discontinue A Nil Tablet and inform your doctor immediately if you get a rash, itchy skin, swelling of face and mouth, or have difficulty in breathing.
Safety advice

Alcohol
CONSULT YOUR DOCTOR
It is not known whether it is safe to consume alcohol with A Nil Tablet. Please consult your doctor.

Pregnancy
CONSULT YOUR DOCTOR
The safety of A Nil Tablet 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
CONSULT YOUR DOCTOR
A Nil Tablet 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
CONSULT YOUR DOCTOR
It is not known whether A Nil Tablet alters the ability to drive. Do not drive if you experience any symptoms that affect your ability to concentrate and react. Please consult your doctor.
A Nil Tablet 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.
A Nil Tablet 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
CONSULT YOUR DOCTOR
There is limited data available on the use of A Nil Tablet in patients with kidney disease. Please consult your doctor.

Liver
CAUTION
A Nil Tablet should be used with caution in patients with liver disease. Dose adjustment may be needed.

Frequently asked questions
Take A Nil Tablet 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.
No, do not stop taking A Nil Tablet and complete the full course of treatment even if you feel better. Your symptoms may improve before the infection is completely cured.
Fact Box
Habit Forming
No
Therapeutic Class
ANTI INFECTIVES
Related lab tests
References
- Qureshi H, Ali A, Baqai R, et al. Efficacy of a Combined Diloxanide Furoate—Metronidazole Preparation in the Treatment of Amoebiasis and Giardiasis. J Int Med Res. 1997;25(3):167-70. [Accessed 08 Apr. 2019] (online) Available from:
- Metronidazole. New York, New York: Pfizer; 2013. [Accessed 08 Apr. 2019] (online) Available from:
- ScienceDirect. Diloxanide. [Accessed 08 Apr. 2019] (online) Available from:
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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: Pan Pharmaceuticals Ltd
Address: c-181, midc waluj aurangabad mh 431136 in
Address: c-181, midc waluj aurangabad mh 431136 in
Vendor Details
Country of origin: India
Lab tests offered by us
- CBC (Complete Blood Count)
- FBS (Fasting Blood Sugar)
- Thyroid Profile Total (T3, T4 & TSH)
- HbA1c (Glycosylated Hemoglobin)
- PPBS (Postprandial Blood Sugar)
- Lipid Profile
- Vitamin D (25-Hydroxy)
- Urine R/M (Urine Routine & Microscopy)
- Coronavirus Covid -19 test- RT PCR
- LFT (Liver Function Test)
- KFT (Kidney Function Test)
- TSH (Thyroid Stimulating Hormone) Ultrasensitive
- ESR (Erythrocyte Sedimentation Rate)
- Uric Acid, Serum
- Vitamin B12
- CRP (C-Reactive Protein), Quantitative
- Urine C/S (Urine Culture and Sensitivity)
- Serum Electrolytes
- Serum Calcium
- Serum Creatinine
- Diabetes Screening (HbA1C & Fasting Sugar)
- KFT with Electrolytes (Kidney Function Test with Electrolytes)
- Cholesterol - Total
- Hb (Hemoglobin)
- Complete Hemogram (CBC & ESR)
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