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Get Bactrim DS (Trimethoprim-Sulfamethoxazole) prescription online

The combination of sulfamethoxazole and trimethoprim ( Bactrim DS ) treats bacterial infections such as urinary tract infections, ear infections, bronchitis, shigellosis, traveler’s diarrhea, and pneumonia.

Getting a Bactrim DS prescription from us is straightforward and effortless; you can connect with a qualified doctor anytime through “Your Doctors Online” to discuss your presenting symptoms. However, a Bactrim DS prescription will only be provided after consultation with our qualified doctor and if the treatment is entirely safe for your unique needs.

What is Bactrim DS?

Bactrim DS is a medication that belongs to the sulfonamide antibiotic class. It is a combination of two active ingredients, sulfamethoxazole and trimethoprim. Healthcare providers widely prescribe this medication for upper respiratory infections, bronchitis, and diarrhea.

Uses of Bactrim DS

Bactrim DS is used and recommended to treat various bacterial infections. Bactrim DS is a brand name for the combination of Trimethoprim and Sulfamethoxazole. Septra is another brand name for the same combination.

How does it works?

Sulfamethoxazole and trimethoprim combine to inhibit the growth and multiplication of bacteria, making Bactrim DS an effective treatment for various bacterial infections, including ear infections, Respiratory tract infections, lung infections, urinary tract infections, and traveler’s diarrhea.

What are the different dosage forms and strengths of Bactrim DS?

Bactrim DS comes in different dosage forms and strengths, including injected solution (16mg/80mg)/mL, oral suspension (40mg/200mg)/5mL, and tablet (80mg/400mg, 160mg/800mg).

How to take it?

Bactrim DS should only be taken as prescribed. Oral dosage forms should be taken via mouth with water while the suspension should be made as directed on the leaflet given with the medication. Injections should only be administered by healthcare professionals.

Side effects of Bactrim DS

Common side effects like:

  • Nausea
  • Diarrhea
  • Skin rash.

Serious side effects include: 

  • allergic reactions
  • blood disorders
  • liver problems
  • kidney issues
  • severe skin reactions.

Request Bactrim DS prescription online

Get online prescription for Bactrim DS in three easy steps.


Describe your issue

Download our app, register and tell us about your medical issue to get started.

  • UTI
  • Anemia
  • STD
  • UTI
  • Skin
  • Covid


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Hi I’m Dr. Nicole. How may I help you?

Hi Dr. Nicole, I have pain and burning while urinating. Do I have a UTI? Can I get antibiotics for that, please?


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Our online doctors can help you with your medical issues and give you prescriptions.


  • Trimethoprim-sulfamethoxazole, 160mg/800mg.

  • Take one tablet twice daily for 5 days, swallow it whole with water.

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Precautions and contraindications

  • Share your medication or allergic history with your healthcare provider to avoid allergic or hypersensitive responses. 
  • If you have or have had problems like liver or bone issues and any medical condition related to bone marrow, discuss it with your doctor or pharmacist to get the correct dose and dosage regimen. 
  • This medication might inhibit or interact with vaccines you are already taking. Discuss it with your healthcare provider or pharmacist for the correct dosing regimen.

FAQs about Bactrim DS prescription online

Can you buy Trimethoprim over the counter?

You can’t get trimethoprim otc or without a prescription. It is a prescription-only medication; hence, you will require a prescription from a licensed physician. You can get a prescription for Bactrim DS(trimethoprim-sulfamethoxazole) online by consulting with an online doctor at Your Doctors Online.

How to take Bactrim DS (Sulfamethoxazole / Trimethoprim)?

The medicine can be taken with or without food but should be swallowed with a whole glass of water. Bactrim DS for skin infection and Bactrim DS for UTI have different duration of treatment. Bactrim DS dose for adults depends on the severity and type of infection. Always follow instructions, take the prescribed dosage, and complete the entire course of medication. Always shake the bottle thoroughly if you are taking SMZ-TMP DS in liquid form.

What are the Intercation of BactrimD DS (Sulfamethoxazole / Trimethoprim?

Bactrim DS can interact with other forms of medication, including thiazides, medications for diabetes, warfarin, methotrexate, digoxin, phenytoin, leucovorin etc.

Does Bactrim treat ear infections?

Yes, it is prescribed to treat Otitis Media(middle ear infections).

Why drink water with Bactrim DS?

It is essential to stay hydrated while taking these pills as that will help prevent the crystallization of urine that may cause the formation of kidney stones as a side effect.

What should I avoid while taking Bactrim?

Sulfamethoxazole and Trimethoprim make you photosensitive. It is best to avoid sunlight exposure and to wear protective clothing. Also, make sure that you use sunscreen.

Can I drink alcohol with Trimethoprim?

Yes, it is safe to drink alcohol with Trimethoprim. Although, consumption in moderation is recommended.

What happens if you take Bactrim on an empty stomach?

You may experience nausea or vomiting if you take the pills on an empty stomach. However, taking Bactrim DS with food may help combat this problem.

Who should not take Bactrim DS?

It is best to avoid Bactrim DS if you are suffering from the following: Allergic reactions to Sulfamethoxazole or Trimethoprim, Kidney disease, Severe liver disease, Certain blood disorders: such as anemia, Bone marrow suppression.

What happens if I miss a dose of Bactrim DS?

You should take the missed dose as soon as you remember. However, if it is time to take your next dose, skip the missed dose and take the scheduled dose/pill.

What happens if I take too much Bactrim DS?

Taking too much Bactrim DS can lead to symptoms like nausea, vomiting, and serious complications, including allergic reactions or organ damage.

What is the normal prescription for Bactrim?

For adults, a common Bactrim prescription includes one DS tablet of 800 mg or two regular tablets of 400mg (taken every 12 hours) for 10 to 14 days.

How quickly does Bactrim work?

Bactrim is a fast-acting combination antibiotic, usually taking effect within 1 to 4 hours of ingestion, with its bactericidal action lasting for 12 hours. It often leads to noticeable improvement in urinary tract infection (UTI) symptoms within 3 days.

Which is better, Bactrim or Amoxicillin?

Bactrim covers a broader range of bacteria, while Amoxicillin is effective against a different spectrum. The choice between Bactrim (sulfamethoxazole/trimethoprim) and amoxicillin depends on the specific bacterial infection being treated and individual factors like allergies and antibiotic resistance patterns in your region. Both are effective antibiotics, but they have different spectra of activity.

Can Bactrim cure a UTI in 3 days?

Bactrim (sulfamethoxazole/trimethoprim) is often prescribed for the treatment of urinary tract infections (UTIs), and some individuals may experience improvement in their UTI symptoms within 3 days of starting the medication. However, the duration of treatment can vary based on factors such as the severity of the infection and individual response to the antibiotics.

Is Bactrim DS an FDA-approved medication?

Bactrim DS is an FDA-approved medication for treating various infections, including chronic bronchitis, urinary tract, and acute ear infections. 

Your Doctors Online uses high-quality and trustworthy sources to ensure content accuracy and reliability. We rely on peer-reviewed studies, academic research institutions and medical associations to provide up-to-date and evidence-based information to the users.

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