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Bactrim Syrup

Written By Dr. Anuj Saini, MMST, MBBS
Reviewed By Dr. Rajeev Sharma, MBA, MBBS
Last updated on 14 Apr 2026 | 04:20 PM (IST)
Bactrim Syrup is a combination medicine that is used to treat various types of bacterial infections such as pneumonia, bronchitis, infections of the urinary tract, ear, and abdomen. It prevents the growth of microorganisms to cure the infection.
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50 ml Syrup
 
 
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General Information

Contains

Sulfamethoxazole (200mg)+ Trimethoprim (40mg)

Marketer

Abbott

Storage

Store below 30°C
The content is shown in English
Bactrim Syrup image
Bactrim Syrup image
Bactrim Syrup image
Bactrim Syrup image

Product introduction

Bactrim Syrup is a prescription medicine that is advised to be taken as suggested by the doctor. It can be taken with or without food and 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.


Bactrim 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 doctor 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 Bactrim Syrup

Benefits of Bactrim Syrup

Treatment of Bacterial infections
Infections caused by bacteria are known as bacterial infections. Bactrim Syrup is an antibiotic which is used to treat different types of bacterial infections. Bactrim Syrup works by stopping the growth of the bacteria. It is effective for bacterial infections of the lungs, throat, urinary tract, ear and stomach. It is advisable to continue taking it as long as it is prescribed even when you feel better, to make sure that all bacteria are killed. Stopping it early may make the infection come back and difficult to treat.

Side effects of Bactrim 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 Bactrim
  • Decreased appetite
  • Red spots or bumps
  • Nausea
  • Vomiting
  • Increased potassium level in blood
  • Candida overgrowth
  • Headache
  • Rash
  • Diarrhea

How to use Bactrim 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. Bactrim Syrup should be taken with or after food.

How Bactrim Syrup works

Bactrim Syrup is a combination of two antibiotics: Sulfamethoxazole and Trimethoprim. These antibiotics work by preventing the bacteria from producing folic acid, a nutrient required for bacterial multiplication. Together, they treat your infection effectively.

All substitutes for Bactrim Syrup

For information purposes only. Consult a doctor before taking any medicine.

Comax Syrup

by Agron Remedies Pvt Ltd
₹70.89/syrup
279% costlier
<h3 class=bodySemiBold>Comax Syrup</h3>

L Trim 200 mg/40 mg Syrup

by Leben Laboratories Pvt Ltd
₹12.8/syrup
32% cheaper
<h3 class=bodySemiBold>L Trim 200 mg/40 mg Syrup</h3>

Quick tips

  • You have been prescribed Bactrim Syrup for the treatment of many types of bacterial infections.
  • Finish the prescribed course of Bactrim Syrup, even if you start to feel better. Stopping it early may make the infection come back and harder to treat.
  • Diarrhea may occur as a side effect but should stop when your course is complete. Inform your doctor if it does not stop or if you find blood in your stools.
  • Stop taking Bactrim Syrup and inform your doctor if you develop skin rash/blisters or other unexplained skin reaction while taking Bactrim Syrup.
  • In case of long-term use, have regular monthly blood tests to monitor your blood cells as suggested by your doctor.

Safety advice

Alcohol

Alcohol

CONSULT YOUR DOCTOR
It is not known whether it is safe to consume alcohol with Bactrim Syrup. Please consult your doctor.
Pregnancy

Pregnancy

CONSULT YOUR DOCTOR
Bactrim Syrup 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

Breast feeding

SAFE IF PRESCRIBED
Available human data suggest that the drug does not pass into breast milk in clinically significant amounts and is unlikely to harm the infant.
There may be a possibility of skin rash in the baby.
Driving

Driving

CONSULT YOUR DOCTOR
It is not known whether Bactrim Syrup 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.
Kidney

Kidney

CAUTION
Bactrim Syrup should be used with caution in patients with kidney disease. Dose adjustment may be needed.
Use of Bactrim Syrup is not recommended in patients with severe kidney disease.
Liver

Liver

CAUTION
Bactrim Syrup should be used with caution in patients with liver disease. Dose adjustment may be needed.
Use of Bactrim Syrup is not recommended in patients with the severe liver disease.

Frequently asked questions

Bactrim Syrup is a combination of two medicines: Sulfamethoxazole+Trimethoprim. It is an antibiotic used to treat certain bacterial infections and works by stopping the growth of the bacteria causing the infection. It treats urinary tract infections, ear infections, enteritis (inflammation of the small intestine), pneumonia, traveler's diarrhea, and episodes of difficulty breathing in people with chronic (long-term) bronchitis.
Yes, Bactrim Syrup is safe to use in most patients. However, in some patients, it may cause some unwanted common side effects like Nausea, Vomiting, Skin rash, Allergic reaction. Inform your doctor as soon as possible if you experience any persistent problem while taking this medication.
Yes, the use of Bactrim Syrup can cause nausea and vomiting. In case, you experience nausea while taking this medicine, take it with milk, food or with antacids. Avoid taking fatty or fried foods. If you start to experience vomiting, drink plenty of water or other fluids. Try small frequent sips of the liquid. Talk to your doctor if you have persistent vomiting and signs of dehydration like dark colored and strong-smelling urine and a low frequency of urination. Do not take any other medicines without speaking to a doctor.
Bactrim Syrup is contraindicated in patients with known allergy to any of the component or excipients of this medicine and in patients with a history of drug-induced immune thrombocytopenia (low platelet count), megaloblastic anemia due to folate deficiency. The medicine is also contraindicated in pediatric patients less than 2 months of age and in patients with marked hepatic damage or with severe renal insufficiency when renal function status cannot be monitored.
It is advised to not skip the dose. Skipping doses or not completing the full course of the medicine can decrease its effectiveness and can lead to the growth of bacteria that are resistant to the effects of it.
Yes, Bactrim Syrup does expire. The expiry date is written on the pack of the medicine and it refers to the last day of the month mentioned. Do not use Bactrim Syrup after the expiry date.
Bactrim Syrup is a combination of two medicines: Sulfamethoxazole and Trimethoprim. It is an antibiotic which treats certain bacterial infections and works by stopping the growth of the bacteria causing the infection.
Yes, the use of Bactrim Syrup can cause nausea and vomiting. Taking it with milk, food or with antacids can prevent nausea. Avoid taking fatty or fried foods along with this medication. In case of vomiting, drink plenty of water or other fluids by taking small frequent sips. Talk to your doctor if vomiting persists and you notice signs of dehydration, like dark colored and strong-smelling urine and a low frequency of urination. Do not take any other medicine without speaking to a doctor.
Bactrim Syrup is considered to be harmful for patients with known allergy to any of the components or excipients of this medicine. It is also avoided in patients with a history of drug-induced immune thrombocytopenia (low platelet count), megaloblastic anemia caused due to folate deficiency. The medicine is also harmful for pediatric patients less than 2 months of age and for patients with marked hepatic damage or with severe renal insufficiency when renal function status cannot be monitored.
No, do not stop taking Bactrim Syrup and complete the full course of treatment, even if you feel better. Your symptoms may improve before the infection is completely cured.
Keep this medicine in the container or the pack it came in, tightly closed. Store it according to the instructions mentioned on the pack or label. Dispose of the unused medicine. Make sure it is not consumed by pets, children and other people.
No, do not stop taking Bactrim Syrup and complete the full course of treatment even if you feel better. Your symptoms may improve before the infection is completely cured.
Take Bactrim 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.
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.

Fact Box

Habit Forming

No

Therapeutic Class

ANTI INFECTIVES

Related lab tests

Complete Blood Count

Peripheral Smear Examination

References

  1. Sulfamethoxazole and trimethoprim. [Accessed 10 Apr. 2019] (online) Available from:
  2. Sulfamethoxazole and trimethoprim. Philadelphia, PA: AR Scientific, INC; 2013. [Accessed 10 Apr. 2019] (online) Available from:
  3. Sulfamethoxazole and trimethoprim. Greenville, SC: PAI Pharma; 2025. [Accessed 08 Nov. 2025] (online). Available from:
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User feedback

Once A Day
51%
Twice A Day
45%
Thrice A Day
2%
Thrice A week
2%
Bacterial infections
91%
Others
9%
Poor
56%
Excellent
33%
Average
11%
Vomiting
50%
No Side Effect
50%
With food
100%
Average
50%
Not Expensive
50%
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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: Abbott
Address: 16th Floor, Godrej BKC, Plot – C, “G” Block, Bandra-Kurla Complex, Bandra (East), Mumbai – 400 051, India

Vendor Details

Country of origin: India
A licensed vendor partner from your nearest location will deliver Bactrim Syrup. Once the pharmacy accepts your order, the details of the pharmacy will be shared with you. Acceptance of your order is based on the validity of your doctor's ℞ and the availability of this medicine.

In case of any issues, contact us

Email ID: [email protected]
Phone Number: 0124-4166666
Address: 5th Floor Tower - B of the Presidency Building, 46/4 Mehrauli Gurgaon Road, Sector 14, Gurugram, Haryana-122001, India

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