Lac Syrup

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Lac Syrup is a prescription medicine used in the treatment of diarrhea. This medicine is a probiotic and it works by restoring the balance of good bacteria in the intestine that may get upset after antibiotic use or due to intestinal infections.

Written By Dr. Syeda Aafia, MBA, BDS,
Reviewed By Dr. Rajeev Sharma, MBA, MBBS,
Last updated on 25 Nov 2025 | 12:37 AM (IST)

MRP ₹22.5

Gurgaon

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General Information

Contains

Lactobacillus (40Million spores)

Marketer

Raphael Pharmaceuticals Pvt Ltd

Storage

Store below 30°C

The content is shown in English

Product introduction

Lac Syrup is taken with or without food in a dose and duration as advised by the doctor. You may take this medicine along with oral rehydration solution (ORS) as it will help to provide adequate fluid and electrolyte replacement. The dose you are given will depend on your condition and how you respond to the medicine. You should take this medicine until your doctor tells you to stop. Consult a doctor while taking any other medicine especially steroids or antibiotics along with this medicine.

The most common side effects are bloating and flatulence. Most of these are temporary and usually resolve with time. Contact your doctor straight away if you are at all concerned about any of these side effects.

Before taking this medicine, you should let your doctor know if you have liver or kidney problems. Pregnant or breastfeeding women should also consult their doctor.

Uses of Lac Syrup

Treatment of Diarrhea

Benefits of Lac Syrup

Treatment of 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 and it causes loss of the useful bacteria that are present naturally in our body. Lac Syrup helps restore the useful bacteria, improves digestion and enhances overall health. It relieves frequent loose motions and also helps you to stay well by preventing them from coming back. You should take this medicine as prescribed to get the most out of it. Drink plenty of fluids while taking it to make sure you stay hydrated.

Side effects of Lac 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 Lac

Flatulence
Bloating

How to use Lac 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. Lac Syrup may be taken with or without food.

How Lac Syrup works

Lac Syrup is a probiotic. It works by restoring the balance of good bacteria in the intestine that may get upset after antibiotic use or due to intestinal infections.

Quick tips

Avoid taking Lac Syrup along with steroids (medications that weaken the immune system) as they might increase the chances of getting sick.
Notify your doctor if you are pregnant.
Notify your doctor if you are breast-feeding.
Take Lac Syrup at least 2 hours before or after antibiotics. This is because taking Lac Syrup along with the antibiotics can reduce their effectiveness.

Safety advice

Alcohol

CONSULT YOUR DOCTOR

It is not known whether it is safe to consume alcohol with Lac Syrup. Please consult your doctor.

Pregnancy

CONSULT YOUR DOCTOR

The safety of Lac 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

CONSULT YOUR DOCTOR

Information regarding the use of Lac Syrup during breastfeeding is not available. Please consult your doctor.

Driving

SAFE

Lac Syrup does not usually affect your ability to drive.

Kidney

CONSULT YOUR DOCTOR

There is limited data available on the use of Lac Syrup in patients with kidney disease. Please consult your doctor.

Liver

CONSULT YOUR DOCTOR

There is limited data available on the use of Lac Syrup in patients with liver disease.

Frequently asked questions

What is Lac Syrup used for?

Lac Syrup is used to help with diarrhea, antibiotic-associated diarrhea, and traveler’s diarrhea. It restores healthy bacteria in your gut and helps prevent harmful bacteria from growing.

Who should not take Lac Syrup?

People should not take Lac Syrup if they are allergic to any of its ingredients. If you develop itching, rash, or swelling after taking it, stop immediately and contact your doctor.

Can I take Lac Syrup with antibiotics?

Yes, but Lac Syrup should be taken in between antibiotic doses, not at the same time, so the probiotic is not destroyed by the antibiotic.

Is Lac Syrup safe for children?

Yes, Lac Syrup is considered safe and effective for children, especially for preventing or treating diarrhea caused by antibiotics or infections.

Is Lac Syrup safe for elderly patients?

The safety of Lac Syrup in elderly patients has not been fully established, so it should be used with caution and under medical advice.

Fact Box

Chemical Class

Biological extracts

Habit Forming

Therapeutic Class

GASTRO INTESTINAL

Action Class

Probiotics

Related lab tests

Stool Examination R/M

References

Central Drugs Standard Control Organisation (CDSCO). [Accessed 28 Mar. 2019] (online) Available from:

User feedback

What are you using Lac Syrup for?

Others

50%

Diarrhea

50%

How much was the improvement?

Poor

100%

What were the side-effects while using Lac Syrup?

Flatulence

100%

How do you take Lac Syrup?

Empty stomach

100%

Please rate Lac Syrup on price

Not Expensive

67%

Average

33%

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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: Raphael Pharmaceuticals Pvt Ltd
Address: 558 GALI NO 1JANAKPURI LUDHIANA PUNJAB PB 000000 IN

Vendor Details

Country of origin: India

Lac Syrup

Save more with additional offers

General Information

Contains

Marketer

Storage

Product introduction

Uses of Lac Syrup

Benefits of Lac Syrup

Side effects of Lac Syrup

How to use Lac Syrup

How Lac Syrup works

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Frequently asked questions

What is Lac Syrup used for?

Who should not take Lac Syrup?

Can I take Lac Syrup with antibiotics?

Is Lac Syrup safe for children?

Is Lac Syrup safe for elderly patients?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

Related lab tests

Stool Examination R/M

References

User feedback

What are you using Lac Syrup for?

How much was the improvement?

What were the side-effects while using Lac Syrup?

How do you take Lac Syrup?

Please rate Lac Syrup on price

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

Lab tests offered by us

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