Sulfamethoxazole / Trimethoprim

Buy Sulfamethoxazole/Trimethoprim Online from Licensed Canadian Pharmacies

Sulfamethoxazole/Trimethoprim, or SMX-TMP, is an oral antibiotic medication. It’s a combination of two active ingredients in a single medicine. Sulfamethoxazole is a sulfonamide (a “sulfa” antibiotic), and trimethoprim is a dihydrofolate reductase inhibitor. Together, they treat several common bacterial infections.

These infections may include urinary tract infections, certain types of bronchitis, shigellosis, traveler’s diarrhea, and skin infections. It is also used at higher doses to treat Pneumocystis jirovecii pneumonia (PCP) and for PCP prophylaxis in at-risk patients.

SMX-TMP tablets are available in two different strengths: 400 mg/80 mg (single strength) and 800 mg/160 mg (double strength). If you plan to buy Sulfamethoxazole/Trimethoprim online from Canada, ask your doctor for a prescription. Follow your prescriber’s directions and store the medication properly.

Note: It does not work for viral illnesses like colds, flu, or COVID-19.

Drug Summary

What Is Sulfamethoxazole/Trimethoprim Used For?

Sulfamethoxazole/Trimethoprim is used to treat a variety of bacterial infections:

• Lower respiratory tract infection (LRTI) affects the lungs and airways
• Urinary tract infection (UTI)
• Ear infections
• Traveler’s diarrhea
• Diarrhea caused by Shigella (shigellosis)

What Are the Benefits of Sulfamethoxazole/Trimethoprim?

• Doctors commonly prescribe it for skin and soft-tissue infections, including some caused by methicillin-resistant Staphylococcus aureus (MRSA).
• First-line therapy for Pneumocystis jirovecii pneumonia (PCP) at higher doses.
• Available in both single-strength and double-strength tablets, with flexible dosing.

What Is the Recommended Dosage of Sulfamethoxazole/Trimethoprim?

Dosage of Sulfamethoxazole/Trimethoprim for Lower Respiratory Tract Infection

For Bronchitis-Related Infections in Adults

• Typical dose: 800 mg/ 160 mg. Take it every 12 hours for 14 days.

For Pneumocystis Pneumonia (PCP)

• Treatment
• For adults & children (2 months and older): The dosage is based on weight.
• Typical dose: 75 to 100 mg/kg Sulfamethoxazole & 15 to 20 mg/ kg Trimethoprim per day.
• Your total dose is divided every 6 hours.
• Duration: treatment lasts for 2 to 3 weeks.
• Prevention
• For adults: 800 mg/160 mg once per day.
• For children (2 months and older): Dose is based on weight and height.
• Common preventive dose: 200 mg/40 mg Or 400 mg/ 80 mg every 12 hours.

Dosage of Sulfamethoxazole/Trimethoprim for Urinary Tract Infections (UTI) & Shigellosis

For adults

• Typical dose: 800 mg/160 mg by mouth every 12 hours.
• Duration: 10 to 14 days for UTI, 5 days for shigellosis.

For children (2 months and older): Weight-based dosing.

• Typical dose: 20 mg/kg Sulfamethoxazole and 4 mg/kg Trimethoprim every 12 hours.
• Duration: 10 days for UTI and 5 days for shigellosis.

Dosage of Sulfamethoxazole/Trimethoprim for Ear Infections (Otitis Media)

• For children (2 months and older): The dosage is based on the child’s weight.
• The usual dose is 20 mg/kg Sulfamethoxazole and 4 mg/kg Trimethoprim every 12 hours for 10 days.

Dosage of Sulfamethoxazole/Trimethoprim for Traveler’s Diarrhea in Adults

• Typical dose: 800 mg/160 mg every 12 hours for 5 days.

Note: If you have kidney issues, your prescriber will adjust the dose or change dosing intervals depending on your level of kidney function.

How Do You Take Sulfamethoxazole/Trimethoprim?

Take SMX-TMP exactly as prescribed and follow these instructions to use it correctly:

• You may take your dose with a full glass of water.
• Drink enough water to reduce the risk of crystalluria.
• Try to take your doses at evenly spaced times. For example, once in the morning and then every 12 hours (for two times daily regimens).
• Be sure to finish the full course, even if symptoms start to improve early. Don’t stop it until your doctor tells you to.

How Does Sulfamethoxazole/Trimethoprim Work?

Sulfamethoxazole and trimethoprim stop bacteria from making folic acid, which they (bacteria) need to build DNA and proteins. Sulfamethoxazole blocks one step in this process, while trimethoprim blocks the next.

As they work one after the other on the same pathway, the pair is stronger together than either drug alone, making it harder for bacteria to become resistant. This double action kills many common bacteria effectively.

What Are the Side Effects of Sulfamethoxazole/Trimethoprim?

Common Sulfamethoxazole/Trimethoprim side effects may include:

• Nausea
• Vomiting
• Loss of appetite
• Rash, or other mild skin reactions
• Diarrhea
• Increased sensitivity to the sun (with a higher risk of sunburn)

Serious side effects (rare):

• Severe allergic reactions (like anaphylaxis)
• Serious skin reactions
• Hyperkalemia (high potassium): This can cause heart rhythm problems
• Severe damage to the kidneys, or Crystalluria (tiny crystals showing up in the urine): This is rare but can happen if you’re not drinking enough fluids (like water) or already have kidney issues.

Note: Call your provider if you experience any serious symptoms or unusual changes.

What Are the Warnings for Sulfamethoxazole/Trimethoprim?

Consider these warnings if you are using SMX-TMP:

• Do not use during late pregnancy (after 32 weeks due to bilirubin displacement risk) or in newborns, as sulfonamides can raise bilirubin levels and cause kernicterus (a serious kind of brain damage in newborns).
• Blood disorders (like low white cells or anemia) can occur with longer use of this medicine. Your provider will monitor your health condition.
• Stop immediately if you develop a severe skin reaction like Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN).
• Sulfamethoxazole/Trimethoprim tablets are not for use in infants under 2 months of age.

What Precautions Should You Take While Using Sulfamethoxazole/Trimethoprim?

When you order Sulfamethoxazole/Trimethoprim online, take these precautions before or while using it:

• If you are allergic to sulfa drugs, do not take SMX-TMP and inform your health care providers.
• Use SMX-TMP tablets carefully if you have any serious kidney or liver disease.
• For long treatment courses, your doctor may check blood counts, kidney function, and electrolytes like potassium.

What Should You Do If You Miss A Dose of Sulfamethoxazole/Trimethoprim?

If you have missed a scheduled dose, take it as soon as you recall. If the time is almost for your next routine dose, then skip the one you missed and resume with your regular dosing regimen.

What Happens When You Take Too Much of Sulfamethoxazole/Trimethoprim?

An overdose of Sulfamethoxazole/Trimethoprim may cause severe nausea, vomiting, dizziness, confusion, visual disturbances, seizures, bone marrow suppression, and other metabolic disturbances like high potassium.

If you notice that you or someone else has taken too much of this medicine, call 911 right away or the Poison Control Center at their toll-free number 1-800-222-1222.

Don’t try to treat a Sulfamethoxazole/Trimethoprim overdose at home

How Do You Store Sulfamethoxazole/Trimethoprim?

When you order Sulfamethoxazole/Trimethoprim from Canada, store it carefully using these guidelines:

• Keep the tablets at room temperature, typically up to 77°F (25°C).
• Dispose of any tablets that are unused or expired responsibly as per your local disposal guidelines.
• Keep the medication away from pets and children to prevent any accidental ingestion.

What Medication Interacts with Sulfamethoxazole/Trimethoprim?

What Are the Alternatives to Sulfamethoxazole/Trimethoprim?

Why Buy Sulfamethoxazole/Trimethoprim from Polar Bear Meds?

At Polar Bear Meds, we’re committed to making prescription medications like Sulfamethoxazole/Trimethoprim for bacterial infection treatment more accessible & affordable for patients in the U.S. Our prices are significantly lower than typical U.S. pharmacy retail rates without compromising on safety or quality. Every order is sourced exclusively from licensed and trusted pharmacies and undergoes complete prescription verification to ensure compliance and authenticity. We offer discreet, trackable shipping to all U.S. states, along with refill support for ongoing treatment. Our friendly customer service team is here to help you.

Sulfamethoxazole/Trimethoprim Cost & Coupons

Get your medicines delivered straight from Canada to your doorstep in the U.S. You can also save more by using the Sulfamethoxazole/Trimethoprim coupon code “WELCOMEPB10” for 10% off on your first order. There are no hidden handling or processing fees, as we believe in complete transparency. Looking to save even more? Join our referral program & earn a $20 credit every time you refer a friend or a family member. Your referral will also receive a $20 credit, so everyone wins. Additionally, after every 10 verified customers' referrals, you'll receive a $100 credit in your account as a thank-you for spreading the word.

At Polar Bear Meds, your safety is our priority. Every order is dispensed from a fully licensed Canadian pharmacy following strict standards for quality, security, and patient care. To conveniently buy Sulfamethoxazole / Trimethoprim from Canada at a competitive cost, call us at 1-888-779-2193 toll-free.