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Bactrim 400mg 80mg Tablets ( Generic Equivalent )

  • Manufacturer GSK
  • Generic Name Sulfamethoxazole Trimethoprim 400mg 80mg Tablets
  • Rx Requirement This product requires a PRESCRIPTION
Price Per Tablet Qty. Price (US $)
$0.90 30 $27.00 Add to Cart
$0.48 60 $54.00 $28.80 You Save $25.20 Add to Cart
$0.34 90 $81.00 $30.60 You Save $50.40 Add to Cart
$0.32 120 $108.00 $38.40 You Save $69.60 Add to Cart
$0.30 150 $135.00 $45.00 You Save $90.00 Add to Cart
$0.28 180 $162.00 $50.40 You Save $111.60 Add to Cart
$0.26 300 $270.00 $78.00 You Save $192.00 Add to Cart

What is Bactrim 400mg 80mg Tablets (Generic Equivalent)?

Bactrim is a FDA-approved prescription antibiotic medication. Bactrim, as the name itself suggests, is used to alleviate or trim a variety of bacterial infections such as bronchitis, infections of the urinary tract, middle ear, and abdomen. This medicine is also used to treat certain types of pneumonia. Bactrim prevents the growth of microorganisms to cure the infection.

Bactrim’s generic equivalent is commonly known as trimethoprim-sulfamethoxazole. It is a combination medicine that contains 400 mg sulfamethoxazole and 80 mg trimethoprim.

Bactrim Generic tablets are also available in double strength, each containing 800 mg sulfamethoxazole and 160 mg trimethoprim.


What is Bactrim 400-80 mg used For?

Bactrim 400-80 mg is used to treat bacterial infections such as UTIs, ear infections, intestinal infections, and bronchitis. It prevents the growth of microbes and stops the infection from spreading. However, it does not treat viral infections.


How Bactrim 400/80 mg Works?

This medicine combination being bactericidal stops the infection by preventing the formation of certain compounds and proteins essential to many bacteria.


Uses of Bactrim 400 80 mg pills:

  1. Treats bacterial infections.

  2. Stops microbial growth of bacteria.

  3. Treats Pneumonia Pneumocystis.  

  4. It does not treat infections caused by viruses, such as colds and flu.


Why Choose Complete Online Pharmacy to Buy Bactrim 400mg 80mg Tablets?

Complete Online Pharmacy is the largest and most reliable international online pharmacy store that provides high-quality FDA-approved drugs at a reasonable price. The quality of our products is of utmost importance to us, and we take utmost care in selling them with the help of our research and development team. Our experts are highly qualified and knowledgeable and they ensure that the products we offer are certified by GPhC (General Pharmaceutical Council), making them completely reliable for the end-users. All these factors make us a trusted online pharmacy brand.

The health and medical information provided here is for general purposes only and is not a substitute for the expertise and judgment of your physician, or other health care professional. It should not be understood to indicate that the use of this medicine is safe, appropriate or effective for you. Always consult your health care professional before using this, or any other, drug.

Precautions and Warnings of Bactrim 400-80 mg Tablets 

  1. Due to the risk of severe side effects, this medicine should not be used by pregnant or breastfeeding mothers or children less than two months of age.

  2. It’s not appropriate for people who have kidney or liver issues or folate deficiency.

  3. Do not use Bactrim if you have severe liver disease, kidney disease, anemia caused by folic acid deficiency, or if you have low platelets count.

Bactrim 400-80 mg Tablets Side Effects

Common side effects of Bactrim include:

  1. Loss of appetite

  2. Nausea

  3. Vomiting

  4. Swollen tongue

  5. Dizziness

  6. Spinning sensation

  7. Ringing in ears

  8. Sleep problem

Severe side effects of Bactrim include:

  1. Signs of an allergy such as hives, cough, chest pain, shortness of breath, swelling in your face or throat

  2. Skin reactions such as sore throat, burning eyes, or skin pain. 


How to Use Bactrim 400/80 mg Tablets?

Bactrim is taken orally with a full glass of water or food or as directed by the physician. It is advisable to consume plenty of fluids while taking this medicine to avoid the formation of kidney stones.

Even if symptoms go away after a few days, continue to take this medicine until the complete prescribed dosage is finished. Stopping it too soon may allow germs to continue to increase, leading to an illness relapse.


Dosage Instructions of Bactrim 400 mg + 80 mg Pills

Bactrim 400 mg + 80 mg Dosage is based on the patient's medical condition and response to treatment.

For the best effect, take this antibiotic at evenly spaced times. To help yourself remember, take this medication at the same time every day.

What happens if I miss a dose?

The medicine should be taken as soon as possible, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

What happens if I overdose?

Overdose of Bactrim 400 mg + 80 mg Pills can have serious symptoms that may include loss of appetite, vomiting, fever, blood in your urine, yellowing of your skin or eyes, confusion, or loss of consciousness. Seek emergency medical attention right away if you have any of these symptoms. Storage Keep the medicine in a cool and dry place, protected from direct sunlight, moisture, and heat. You must keep it away from children.



Keep the medicine in a cool and dry place, protected from direct sunlight, moisture, and heat. You must keep it away from children.

What are the Benefits of Bactrim 400 mg 80 mg Tablets?

Bacterial infections are caused due to the multiplication of harmful bacteria inside or on the body. Infectious or harmful bacteria can make you sick and reproduce quickly in your body. Available as a generic under the name sulfamethoxazole/trimethoprim.

Bactrim is a combination antibiotic medicine used to treat such infections, which may affect the brain, respiratory tract (Bronchitis), ear (Otitis Media), urinary tract, lungs (Pneumonia), gastrointestinal tract, and also toxoplasmosis (Swollen lymph glands, especially around the neck). 

Pros and Cons of Bactrim 400mg 80mg Tablets

Pros of Bactrim 400mg 80mg Tablets

  1. It is available as a cheap generic, which makes it even more accessible. 

  2. The medication can be given to a child as young as 2 months old. 

  3. Bactrim is available in three different forms, namely, oral liquid, pill, and injection. 

  4. It can treat many types of bacterial infections. 

Cons of Bactrim 400mg 80mg Tablets

  1. It makes the skin more sensitive to the sun. 

  2. The drug is unsafe to use during pregnancy. 

  3. It should not be used by patients with severe kidney and liver problems. 

  4. Bactrim can cause stomach upset and can even result in diarrhea.

Alternate Bactrim 400mg 80mg Tablets Medicine


Ciprofloxacin is used for treating a wide variety of bacterial infections. It belongs to the category of drugs commonly known as quinolone antibiotics. The medication functions by restricting the growth of bacteria in the body. However, it will not work for any viral infections such as flu, common cold, etc. 


Just like Ciprofloxacin, Cephalexin is also a close alternative to Bactrim. It belongs to the class of medicines known as cephalosporin antibiotics. It restricts the growth of bacteria and eventually cures the infection.

Interactions of Bactrim 400/80 mg Tablet 

Medicines that interact with Bactrim may either diminish its effect, shorten how long it lasts, increase side effects, or have less of an effect when taken with Bactrim. Speak to your doctor about how drug interactions should be managed.

Common medications that may interact with Bactrim include:

  1. Seizure medicines

  2. Antidepressants

  3. Blood thinners such as warfarin

  4. Blood pressure medicines such as enalapril

  5. Metformin

  6. Diuretics

  7. Vaccinations

Frequently Asked Questions

  • Who should not take Bactrim oral? 

    People with kidney or liver disease, a deficiency in folate, and elderly people may be at a greater risk of side effects from Bactrim. It should not be consumed by pregnant or nursing women or babies less than two months of age.

  • Does Bactrim oral interact with other medications? 

    Some medicines may interact with Bactrim and reduce its effectiveness or increase side effects, Common medications that may interact with Bactrim include: 1. Anticonvulsants 2. Antidepressants 3. Blood thinners 4. Blood pressure medications 5. Diuretics 6. Vaccinations

  • Should I avoid certain foods while taking Bactrim orally? 

    Avoid consuming processed foods and alcohol while taking this medicine. It may interfere with its effectiveness and cause serious side effects like nausea, vomiting, or diarrhea.

  • Is Bactrim a strong antibiotic?

    Bactrim is a strong combination of antibiotics trimethoprim and sulfamethoxazole used to treat unresponsive infections, but it may not be suitable for people who have kidney or liver disease, or who have insufficient folate. The risk of the side effects mentioned earlier can be higher in elderly patients. 

  • Why do you have to drink water with Bactrim?

    It is advisable to consume plenty of fluids while taking this medicine to avoid the formation of kidney stones.

  • How much does Bactrim 400-80 mg cost?

    It is available in the market at a very reasonable price.

  • Is Bactrim harmful to kidneys?

    Bactrim is an effective combination antibiotic; however, it may not be suitable for those suffering from severe kidney disease. It is frequently associated with an increase in creatinine shortly after starting it. Please consult your doctor before starting the medication.

  • Can I buy Bactrim 400 mg 80 mg online?

    You can purchase it from the Complete Online Pharmacy website.

  • Is Bactrim hard on your liver?

    In patients with liver disease, Bactrim Tablet should be used with caution. There might be a need for dosage adjustment. Please consult your doctor before starting the medication. 

  • Can Bactrim make you tired?

    While antibiotics are essential in the treatment of bacterial infections, some people may experience uncommon but serious side effects such as unusual tiredness or weakness.


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