centri 800mg/160mg tablet - Sulfamethoxazole (800mg) + Trimethoprim (160mg) medicine

centri 800mg/160mg tablet - Uses, Price, Side Effects & Substitutes

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๐Ÿญ Centurion Remedies Pvt Ltd ๐Ÿ“ฆ Varies by brand ๐Ÿ’Š Allopathy ๐Ÿ“… Updated: Jun 26, 2026
๐Ÿ“‹ Prescription Required ๐Ÿ’Š Generic Available
Medically Reviewed
Dr. SaathiMed Expert Panel | Jun 26, 2026

What is centri 800mg/160mg tablet used for?

Antrima DS (Sulfamethoxazole + Trimethoprim) is used to treat ANTI INFECTIVES. It contains Sulfamethoxazole (800mg) + Trimethoprim (160mg), which Sequential inhibition of folate synthesis: Sulfamethoxazole inhibits dihydropter. Always consult your doctor before use. Take as prescribed.

  • Generic Name: Sulfamethoxazole + Trimethoprim
  • Manufacturer: Centurion Remedies Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: D
  • Prescription Required: Yes
๐Ÿ’ก Did You Know? The Indian pharmaceutical market is expected to reach $130 billion by 2030.

๐Ÿ’Š centri 800mg/160mg tablet Uses & Benefits

Urinary tract infections, Acute otitis media, Pneumocystis jirovecii pneumonia, Traveler's diarrhea, Shigellosis, Bronchitis

Off-label uses: Toxoplasmosis, Nocardiosis, Whipple's disease

๐Ÿ“‹ Drug Information

Generic Name(s)Sulfamethoxazole + Trimethoprim
Brand NameAntrima DS
ManufacturerCenturion Remedies Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassANTI INFECTIVES
Action ClassSulfonamide + Folate antagonist
Route of AdministrationOral
StorageStore at 20-25ยฐC (68-77ยฐF); protect from light and moisture
Shelf LifeAs per manufacturer

๐Ÿ”ฌ Pharmacology (PK/PD)

Pharmacokinetics

AbsorptionWell absorbed from GI tract
DistributionWidely distributed; crosses placenta and enters breast milk
Protein BindingSulfamethoxazole: ~70%; Trimethoprim: ~44%
MetabolismSulfamethoxazole: hepatic acetylation and glucuronidation; Trimethoprim: hepatic oxidation
Half-LifeSulfamethoxazole: 9-11 h; Trimethoprim: 8-11 h
ExcretionRenal (both)
Bioavailability~90-100% oral
Onset of Action1-2 hours
Peak Plasma Time1-4 hours
Duration of Action12 hours

How It Works

Sequential inhibition of folate synthesis: Sulfamethoxazole inhibits dihydropteroate synthase; Trimethoprim inhibits dihydrofolate reductase

Mechanism Steps

1Sulfamethoxazole inhibits dihydropteroate synthase, blocking PABA incorporation into dihydrofolic acid
2Trimethoprim inhibits dihydrofolate reductase, preventing reduction of dihydrofolic acid to tetrahydrofolic acid
3Sequential blockade depletes tetrahydrofolate, essential for thymidine and purine synthesis

๐Ÿ’ก How to Take centri 800mg/160mg tablet

Follow your doctor's prescription exactly.

โš ๏ธ Side Effects of centri 800mg/160mg tablet

โœ… Common Side Effects

  • Nausea
  • Vomiting
  • Diarrhea
  • Rash
  • Photosensitivity

๐Ÿšจ Serious Side Effects

  • Stevens-Johnson syndrome
  • Toxic epidermal necrolysis
  • Aplastic anemia
  • Agranulocytosis
  • Hepatitis
  • Interstitial nephritis

โš ๏ธ Rare Side Effects

  • Pseudomembranous colitis
  • Pancreatitis
  • Serum sickness
  • Lupus-like syndrome

Consult your doctor if you experience any unusual symptoms.

๐Ÿ”ฌ Drug Interactions

โš ๏ธ DrugSeverityEffect
Warfarin Major Increased bleeding risk
Methotrexate Major Increased methotrexate toxicity
Phenytoin Major Increased phenytoin levels
Sulfonylureas Major Increased hypoglycemic effect
Cyclosporine Major Increased nephrotoxicity
ACE inhibitors Moderate Increased risk of hyperkalemia
Diuretics Moderate Increased risk of thrombocytopenia
Procainamide Moderate Increased procainamide levels
Amantadine Moderate Increased amantadine toxicity
Oral contraceptives Minor Reduced contraceptive efficacy
Rifampin Minor Reduced sulfamethoxazole levels

๐Ÿšจ Major Interactions

  • Warfarin
  • Methotrexate
  • Phenytoin
  • Sulfonylureas
  • Cyclosporine

โšก Moderate Interactions

  • ACE inhibitors
  • Diuretics
  • Procainamide
  • Amantadine

โ„น๏ธ Minor Interactions

  • Oral contraceptives
  • Rifampin

๐Ÿฝ๏ธ Food Interactions

Folate-rich foods may reduce efficacy

๐Ÿท Alcohol Interaction

Avoid alcohol; may cause disulfiram-like reaction

๐Ÿ›ก๏ธ Safety & Warnings

๐Ÿšซ Contraindications

Hypersensitivity to sulfonamides or trimethoprim, Severe hepatic or renal impairment, Megaloblastic anemia due to folate deficiency, Pregnancy (especially 1st and 3rd trimester), Infants <2 months

๐Ÿ“Š Monitoring Parameters

Renal function, Hepatic function, CBC with differential, Serum potassium, Signs of hypersensitivity

๐Ÿคฑ Lactation Safety

Caution; excreted in breast milk; avoid in nursing infants <2 months

๐Ÿ’Š Overdose Management

Gastric lavage, activated charcoal, supportive care; folate supplementation for trimethoprim toxicity

โฐ Missed Dose

Take as soon as remembered; if near next dose, skip missed dose; do not double dose

๐Ÿ‘จโ€โš•๏ธ Reviewed by Expert

Dr. SaathiMed Expert Panel

MD, PhD - Pharmacology

Reviewed: Jun 26, 2026

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