Bactrim : Uses, Side Effects, Dosage, Interactions, Pregnancy, and Overdose

Bactrim treats numerous kinds of bacterial infections. This drug can trigger you to sunburn a lot more conveniently. Consume alcohol plenty of fluids with this medication.

Bactrim is a prescription medication made use of to deal with bacterial infections of the urinary system, lungs, intestinal tracts, and also ears. It additionally deals with infections that trigger tourist’s diarrhea. This medicine is a solitary formulation consisting of 2 drugs, sulfamethoxazole as well as trimethoprim. These medicines both come from a team of medications called anti-biotics. These work by stopping microbial development.

Bactrim comes in tablet kind and is taken up to 4 times a day, with or without food.
Usual negative effects of Bactrim include diarrhea, vomiting, anorexia, and skin responses like hives or itching.

Bactrim Uses

This drug is a combination of two prescription antibiotics: sulfamethoxazole as well as trimethoprim. It is utilized to deal with a wide array of bacterial infections (such as middle ear, urine, respiratory system, and also intestinal infections). It is also used to stop and treat a particular type of pneumonia (pneumocystis-type).

This medicine ought to not be made use of in youngsters much less compared to 2 months of age as a result of the threat of severe adverse effects.

This medication deals with just specific kinds of infections. It will certainly not work for viral infections (such as influenza). Unnecessary usage or misuse of any antibiotic could cause its reduced efficiency.

How to Use

Take this medication by mouth, as routed by your doctor, with a complete glass of water (8 ounces/ 240 milliliters). If stomach upset occurs, take with food or milk. Consume lots of liquids while taking this medication to lower the unlikely threat of kidney rocks forming, unless your medical professional advises you otherwise. Dose is based on your clinical condition and reaction to treatment.

For the very best effect, take this antibiotic at evenly spaced times. In order to help you remember, take this drug at the exact same time( s) daily.

Remain to take this drug until the complete prescribed quantity is completed, also if signs and symptoms go away after a couple of days. Quiting it too early could permit germs to continue to grow, which could result in a regression of the infection.

Inform your physician if your problem continues or aggravates.

Bactrim Dosage

Generic Name: sulfamethoxazole 800mg, Trimethoprim 160mg
Dosage form: tablet

BACTRIM is contraindicated in pediatric people much less than 2 months old.
Urinary System Infections and Shigellosis in Grownups as well as Pediatric Clients, as well as Severe Otitis Media in Children:

Adults: The usual grown-up dosage in the therapy of urinary tract infections is 1 BACTRIM DS (double stamina) tablet or 2 BACTRIM tablets every 12 hrs for 10 to 2 Week. A the same day-to-day dosage is made use of for 5 days in the therapy of shigellosis.

Children: The advised dose for youngsters with urinary system infections or intense otitis media is 40 mg/kg sulfamethoxazole as well as 8 mg/kg trimethoprim per 1 Day, given up 2 divided dosages every 12 hours for 10 days. A the same daily dosage is utilized for 5 days in the therapy of shigellosis. The adhering to table is a guideline for the attainment of this dosage:

Kids 2 months of age or older:

Weight Dose–every 12 hours

88402 or 1 DS tablet

For People with Damaged Renal Feature: When renal feature is impaired, a minimized dosage must be employed utilizing the adhering to table:


Clearance (mL/min) = Recommended

Dosage Regimen

Above 30 = Usual standard regimen

15–30    ½ the usual regimen

Below 15 = Use not recommended

Intense Exacerbations of Persistent Respiratory Disease in Adults:

The typical grown-up dose in the therapy of intense exacerbations of persistent bronchitis is 1 BACTRIM DS (dual stamina) tablet computer or 2 BACTRIM tablets every 12 hours for 2 Week.

Pneumocystis Jiroveci Pneumonia:

Therapy: Grownups and Children

The recommended dosage for therapy of individuals with recorded Pneumocystis jiroveci pneumonia is 75 to 100 mg/kg sulfamethoxazole and also 15 to 20 mg/kg trimethoprim per 24-HOUR given up similarly split doses every 6 hours for 14 to 21 days.11 The adhering to table is a guideline for the upper limit of this dose:

70322 or 1 DS tablets
106483 or 1½ DS tablets
141644 or 2 DS tablets
176805 or 2½ DS tablets

For the lower restriction dosage (75 mg/kg sulfamethoxazole as well as 15 mg/kg trimethoprim each 1 Day) administer 75% of the dosage in the above table.



The recommended dosage for prophylaxis in adults is 1 BACTRIM DS (double strength) tablet day-to-day.12.


For youngsters, the suggested dosage is 750 mg/m2/day sulfamethoxazole with 150 mg/m2/day trimethoprim offered orally in just as divided doses twice a day, on 3 successive days each week. The overall day-to-day dosage should not surpass 1600 mg sulfamethoxazole and 320 mg trimethoprim.13 The adhering to table is a guideline for the achievement of this dose in children:.

Body Surface AreaDose–every 12 hours

Tourist’s Diarrhea of the bowels in Adults:

For the treatment of vacationer’s diarrhea, the typical grown-up dose is 1 BACTRIM DS (double toughness) tablet or 2 BACTRIM tablet computers every 12 hours for 5 days.

Bactrim Side Effects

For the Customer
Applies to sulfamethoxazole/ trimethoprim: dental suspension, oral tablet

Other dosage types:

intravenous remedy
In addition to its needed effects, sulfamethoxazole/ trimethoprim might trigger some undesirable effects. Although not all of these adverse effects could happen, if they do occur they could require medical attention.

Consult your medical professional immediately if any one of the complying with adverse effects happen while taking sulfamethoxazole/ trimethoprim:

  • Rare
  • Abdominal or belly pain
  • black, tarry stools
  • blistering, peeling, or loosening of the skin
  • modifications in skin shade
  • breast pain
  • cools
  • cough or hoarseness
  • dark pee
  • looseness of the bowels
  • dizziness
  • fever with or without chills
  • basic feeling of fatigue or weak point
  • frustration
  • itching
  • joint or muscular tissue discomfort
  • light feces
  • loss of appetite
  • lower back or side pain
  • nausea
  • discomfort, inflammation, or swelling of the foot or leg
  • painful or difficult peeing
  • pale skin
  • breakout
  • red skin lesions, frequently with a purple facility
  • red, aggravated eyes
  • shortness of breath
  • aching throat
  • sores, abscess, or white places in the mouth or on the lips
  • swollen or agonizing glands
  • tightness in the upper body
  • unpleasant breath smell
  • unusual blood loss or bruising
  • vomiting of blood
  • wheezing
  • yellow eyes or skin
  • Incidence not known
  • Abdominal or tummy inflammation
  • back, leg, or belly pains
  • hemorrhaging gums
  • loss of sight or vision adjustments
  • sores, hives, or itchiness
  • bloating
  • blood in the urine or feces
  • bluish-colored lips, fingernails, or palms
  • burning, creeping, itching, tingling, unpleasant, prickling, “pins as well as needles”, or tingling sensations
  • burning of the face or mouth
  • chest pain
  • cloudy urine
  • confusion
  • irregular bowel movements
  • continuing buzzing or humming or various other inexplicable noise in the ears
  • convulsions
  • fractures in the skin
  • lowered regularity or amount of pee
  • looseness of the bowels, watery and serious, which could also be bloody
  • difficulty with breathing
  • difficulty with ingesting
  • collapsing spells
  • basic body swelling
  • basic feeling of pain or disease
  • hair loss
  • hearing loss
  • hives
  • enhanced thirst
  • acid indigestion
  • uneven heart beat
  • large, flat, blue, or purplish spots in the skin
  • large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex body organs
  • loss of warm from the body
  • muscle mass or joint discomfort
  • nosebleeds
  • not able to pass pee
  • feeling numb or prickling in the hands, feet, or lips
  • discomfort or burning while urinating
  • determine red spots on the skin
  • puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  • increased red swellings on the skin, the butts, legs, or ankle joints
  • redness of the white part of the eyes
  • inflammation, swelling, or discomfort of the tongue
  • sores, ulcers, or white places on the lips or in the mouth
  • pain of the muscle mass
  • stiff neck or back
  • swelling of the face, hands, legs, and also feet
  • unsteadiness, trembling, or other problems with muscle control or coordination
  • unusual weight loss
  • weak point in the hands or feet
  • weak point or heaviness of the legs
  • weight gain

Some negative effects of sulfamethoxazole/ trimethoprim could take place that normally do not require medical attention. These adverse effects could go away during treatment as your body adapts to the medication. Additionally, your healthcare expert might be able to inform you regarding ways to prevent or minimize a few of these adverse effects. Get in touch with your healthcare professional if any one of the adhering to negative effects continue or are troublesome or if you have any type of inquiries concerning them:

  • Extra typical
  • Passing away of gas
  • Occurrence unknowned
  • Discouragement
  • feeling of continuous activity of self or environments
  • really feeling unfortunate or empty
  • enhanced level of sensitivity of the skin to sunlight
  • irritation
  • lack of sensation or feeling
  • loss of interest or enjoyment
  • nervousness
  • soreness or other discoloration of the skin
  • seeing, hearing, or feeling points that are not there
  • feeling of spinning
  • extreme sunburn
  • difficulty focusing
  • problem sleeping
  • uncaring
  • weight management

For Medical care Professionals
Put on sulfamethoxazole/ trimethoprim: intravenous remedy, dental suspension, dental tablet computer


Rare (0.01% to 0.1%): Thrombophlebitis
Extremely rare (less than 0.01%): Polyarteritis nodosa, syncope
Postmarketing records: QT prolongation leading to ventricular tachycardia and also torsade de pointes


Typical (1% to 10%): Skin breakout, urticaria
Extremely uncommon (much less compared to 0.01%): Photosensitivity, exfoliative dermatitis, taken care of drug eruption, erythema multiforme, erythema nodosum, Stevens-Johnson Disorder (SJS), harmful skin necrolysis, bullous dermatitis, purpura, angioedema

Regularity not reported: Pruritus

Typical (1% to 10%): Diarrhea, nausea, vomiting, anorexia
Really rare (much less than 0.01%): Bowel irregularity, glossitis, stomatitis, pseudomembranous colitis, pancreatitis, stomach pain

Frequency not reported: Sore mouth, moniliasis


Very uncommon (less than 0.01%): Leucopenia, neutropenia, thrombocytopenia, pancytopenia, bone marrow anxiety, agranulocytosis, aplastic anemia, hemolytic anemia, eosinophilia, purpura, hemolysis
Frequency not reported: Megaloblastic anemia, methemoglobinemia, hypoprothrombinemia, granulocytopenia


Unusual (0.01% to 0.1%): Jaundice
Very uncommon (less compared to 0.01%): Hepatitis (including cholestatic jaundice and hepatic death), disruption in liver enzymes, raised serum transaminases, raised bilirubin


Very rare (much less than 0.01%): Hypersensitivity, anaphylaxis, anaphylactoid reaction medicine fever, chills, sensitive vasculitis looking like Henoch-Schonlein purpura

Frequency not reported: Stevens-Johnson disorder (SJS), hazardous epidermal necrolysis (TEN), anaphylaxis, sensitive myocarditis, erythema multiforme, exfoliative dermatitis, angioedema, lotion sickness-like syndrome, generalized allergic reactions, generalized skin eruptions, conjunctival and also scleral injection, photosensitivity, pruritus, urticaria, rash, periarteritis nodosa, systemic lupus erythematosus (SLE)


Usual (1% to 10%): Monilial overgrowth


Uncommon (less than 0.1%): Neighborhood reaction, pain, slight irritation


Very common (10% or more): Hyperkalemia (specifically in the senior as well as in HIV individuals).
Extremely uncommon (less compared to 0.01%): Hypoglycemia, hyponatremia, metabolic acidosis [Ref] Bone and joint.

Uncommon (much less than 0.1%): Rhabdomyolysis (mainly in HELP individuals).
Frequency not reported: Arthralgia, myalgia
Nerve system.

Typical (10% or even more): Migraine.
Very uncommon (much less than 0.01%): Aseptic meningitis (swiftly relatively easy to fix on withdrawal of treatment yet could persist on rechallenge), convulsions, peripheral neuritis, ataxia, vertigo, wooziness, tremor, lethargy, paresthesia, convulsions, peripheral neuritis, ringing in the ears

Really unusual (much less compared to 0.01%): Uveitis


Very unusual (less compared to 0.01%): Depression, hallucination, confusional state, frustration, anxiousness, uncommon behavior, sleep problems, headaches
Extremely rare (much less than 0.01%): Renal tubular acidosis, Damaged kidney function (sometimes reported as kidney failure), hematuria.

Regularity not reported: Lotion creatinine enhanced, blood urea nitrogen enhanced.
Postmarketing reports:.

Frequency not reported: Kidney failing, interstitial nephritis, elevated BUN as well as product creatinine, toxic nephrosis with oliguria as well as anuria, tubular death, crystalluria, worry of kidney disease, azotemia, hyperkalemic kidney tubular acidosis, overestimations of normal creatinine worths

Extremely uncommon (less compared to 0.01%): Cough, dyspnea, lung infiltration, shortness of breath, wheezing, epistaxis


1. Cerner Multum, Inc. “Australian Item Details.” O 0.

2. Cerner Multum, Inc. “UK Recap of Product Characteristics.” O 0.

3. “Product Details. Sulfamethoxazole-Trimethoprim (sulfamethoxazole-trimethoprim).” SICOR Pharmaceuticals Inc, Irvine, CA.

Some side effects of Bactrim may not be reported. Constantly consult your physician or medical care specialist for clinical guidance. You may likewise report negative effects to the FDA.

Bactrim Interactions

Inform your physician about all the medicines you take consisting of prescription as well as non-prescription medications, vitamins, and natural supplements. Specifically tell your physician if you take:

  • warfarin (Coumadin, Jantoven).
  • phenytoin (Dilantin).
  • methotrexate (Trexall, Rheumatrex).
  • cyclosporine (Gengraf, Neoral, Sandimmune).
  • digoxin (Lanoxin).
  • pyrimethamine (Daraprim).
  • indomethacin (Indocin).
  • leucovorin (Wellcovorin).
  • thiazide diuretics such as hydrochlorothiazide (Esidrix, HydroDiuril, Hydro-Par, Oretic) as well as chlororthalidone (Thalitone, Hygroton).
  • medicines that use the enzyme CYP2C8 such as pioglitazone (Actos), repaglinide (Prandin), as well as rosiglitazone (Avandia).
  • medicines that make use of the enzyme CYP2C9 such as glipizide (Glucotrol) and also glyburide (Micronase, DiaBeta).
    metformin (Glucophage).

This is not a complete listing of Bactrim drug communications. Ask your doctor or pharmacist for additional information.

Bactrim Precautions

Major negative effects have actually been reported with Bactrim consisting of the following:.

Hypersensitivity (serious allergic reaction). Signs of a hypersensitivity response, that include the following:.
breast pain.

  • swelling of the face, eyes, lips, tongue, arms, or legs.
  • trouble breathing or swallowing.
  • fainting.
  • rash.

Raised danger of blood loss. This may result from thrombocytopenia, or when your platelet count degree decreases. Tell your healthcare provider right away if you have some or all of the adhering to symptoms of blood loss:

  • red or purple places seen on skin.
  • hemorrhaging that does not settle within a couple of minutes.
  • uncommon or easy bruising.

Diarrhea. Diarrhea of the bowels is a common issue caused by antibiotics, as well as it normally finishes when the anti-bacterial is discontinued. Sometimes after beginning treatment with anti-biotics, clients can develop watery as well as bloody feces (with or without stomach aches and high temperature) even as late as 2 or more months after having taken their last dose of the anti-bacterial. If looseness of the bowels is extreme or lasts greater than 2 or 3 days, contact your doctor, as this may signify an infection of the bowels.

Hyperkalemia (high potassium levels in body). Hyperkalemia could cause an arrhythmia, or a rapid heart price or rhythm. Tell your healthcare provider immediately if you have some or every one of the following signs of hyperkalemia:

  • shortness of breath.
  • fast or reduce heart beat.
  • lightheadedness or lightheadedness.
  • breast pain.
  • sweating.
  • avoiding heart beats.

Kidney rocks. To prevent kidney rocks, it is recommended to consume alcohol lots of liquids. Tell your doctor right away if have some or all of the following symptoms of kidney stones:

  • severe discomfort in your back or side that will certainly not go away.
  • blood in your urine.
  • high temperature as well as chills.
  • vomiting.
  • urine that scents poor or looks over cast.
  • a burning sensation when you pee.

Do not take Bactrim if you:.

  • have a recognized allergic reaction to trimethoprim or sulfamethoxazole or to any of this medicine’s components.
    are less compared to 2 months of age.
  • have a specific sort of microbial infection (group A beta-hemolytic streptococcal microorganisms).
    have a background of drug-induced immune thrombocytopenia (reduced platelet count) with use trimethoprim and/or sulfa-containing drugs.
  • have a background of anemia (reduced red cell matter) because of a folate shortage.
    have extreme liver or kidney damage.
    are expectant or are breastfeeding.

Bactrim Food Interactions

Medicines can interact with specific foods. Sometimes, this might be harmful and your medical professional could advise you to stay clear of specific foods. When it comes to Bactrim, there are no specific foods that you must leave out from your diet regimen when getting Bactrim.

Bactrim and Pregnancy

Inform your medical professional if you are expectant or plan to become pregnant.

The FDA classifies medicines based on security for use during pregnancy. 5 classifications – A, B, C, D, and X, are made use of to identify the possible threats to a coming baby when a drug is taken during pregnancy.

Bactrim falls under classification D. It is highly not advised (” contraindicated”) for usage in expecting people due to the fact that sulfonamides cross the placental obstacle, which might create mental retardation to the expected kid. Additionally, sulfamethoxazole and trimethoprim may disrupt folic acid activity in the body. This could better negatively influence the expected youngster.

In recap, Bactrim must be made use of while pregnant just if the prospective advantage warrants the potential danger to the fetus.

Bactrim and Lactation

Tell your medical professional if you are breastfeeding or strategy to breastfeed.

You ought to not take Bactrim if you are nursing. Septra has the ability to pass into breast milk, which could cause mental retardation to your baby.

Bactrim Overdose

If you take too much Bactrim, call your doctor or regional Poisonous substance Nerve center, or seek emergency situation medical interest right away.




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