coxwin zh 450 mg/300 mg tablet - Rifampicin (450mg) + Isoniazid (300mg) medicine

coxwin zh 450 mg/300 mg tablet - Uses, Price, Side Effects & Substitutes

No reviews yet
๐Ÿญ Marc Laboratories Pvt Ltd ๐Ÿ“ฆ Varies by brand ๐Ÿ’Š Allopathy ๐Ÿ“… Updated: Jun 30, 2026
โš ๏ธ Hepatotoxicity Risk ๐Ÿ“‹ Prescription Required ๐Ÿ’Š Generic Available
Medically Reviewed
SaathiMed Expert Panel | Jun 30, 2026

What is coxwin zh 450 mg/300 mg tablet used for?

Akt 2 Tablet (Rifampicin + Isoniazid) is used to treat ANTI INFECTIVES. It contains Rifampicin (450mg) + Isoniazid (300mg), which Rifampicin inhibits DNA-dependent RNA polymerase; Isoniazid inhibits mycolic aci. Always consult your doctor before use. Take as prescribed.

  • Generic Name: Rifampicin + Isoniazid
  • Manufacturer: Marc Laboratories Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: C
  • Prescription Required: Yes
๐Ÿ’ก Did You Know? The first generic medicine was introduced in India in 1970 after the Patents Act was amended.

๐Ÿ’Š coxwin zh 450 mg/300 mg tablet Uses & Benefits

Tuberculosis (first-line treatment)

Off-label uses: Leprosy (rifampicin), atypical mycobacterial infections

๐Ÿ“‹ Drug Information

Generic Name(s)Rifampicin + Isoniazid
Brand NameAkt 2 Tablet
ManufacturerMarc Laboratories Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassANTI INFECTIVES
Action ClassAntimycobacterials
Route of AdministrationOral
StorageStore at 20-25ยฐC, protect from light and moisture
Shelf LifeAs per manufacturer

๐Ÿ”ฌ Pharmacology (PK/PD)

Pharmacokinetics

AbsorptionRifampicin: Well absorbed orally; Isoniazid: Rapidly and completely absorbed orally
DistributionRifampicin: Widely distributed, crosses blood-brain barrier; Isoniazid: Distributed throughout body, including CSF
Protein BindingRifampicin: 80-90%; Isoniazid: 0-10%
MetabolismRifampicin: Hepatic, deacetylated to active metabolite; Isoniazid: Hepatic, acetylation (N-acetyltransferase 2)
Half-LifeRifampicin: 3-4 hours; Isoniazid: 1-4 hours (fast acetylators), 2-5 hours (slow acetylators)
ExcretionRifampicin: Biliary (60-65%), renal (30%); Isoniazid: Renal (75-95%)
BioavailabilityRifampicin: 90-95%; Isoniazid: 80-90%
Onset of ActionRifampicin: 1-2 hours; Isoniazid: 1-2 hours
Peak Plasma TimeRifampicin: 2-4 hours; Isoniazid: 1-2 hours
Duration of ActionRifampicin: 24 hours; Isoniazid: 24 hours

How It Works

Rifampicin inhibits DNA-dependent RNA polymerase; Isoniazid inhibits mycolic acid synthesis

Mechanism Steps

1Rifampicin binds to DNA-dependent RNA polymerase, inhibiting RNA synthesis
2Isoniazid is activated by catalase-peroxidase, inhibits InhA, disrupting mycolic acid synthesis
3Both drugs exert bactericidal effects on replicating and dormant mycobacteria

๐Ÿ’ก How to Take coxwin zh 450 mg/300 mg tablet

Follow your doctor's prescription exactly.

โš ๏ธ Side Effects of coxwin zh 450 mg/300 mg tablet

โœ… Common Side Effects

  • Nausea
  • Vomiting
  • Anorexia
  • Abdominal pain
  • Headache
  • Dizziness
  • Rash
  • Reddish-orange discoloration of urine/tears/sweat (rifampicin)

๐Ÿšจ Serious Side Effects

  • Hepatotoxicity
  • Thrombocytopenia
  • Hemolytic anemia
  • Acute renal failure
  • Peripheral neuropathy (isoniazid)
  • Stevens-Johnson syndrome

โš ๏ธ Rare Side Effects

  • Agranulocytosis
  • Lupus-like syndrome
  • Gynecomastia
  • Psychosis

Consult your doctor if you experience any unusual symptoms.

๐Ÿ”ฌ Drug Interactions

โš ๏ธ DrugSeverityEffect
Warfarin Major Reduced anticoagulant effect
Oral contraceptives Major Reduced contraceptive efficacy
Phenytoin Major Reduced phenytoin levels
Theophylline Major Reduced theophylline levels
Ketoconazole Major Reduced ketoconazole levels
Antiretroviral protease inhibitors Major Reduced antiretroviral levels
Corticosteroids Moderate Reduced corticosteroid effect
Cyclosporine Moderate Reduced cyclosporine levels
Diltiazem Moderate Reduced diltiazem levels
Verapamil Moderate Reduced verapamil levels
Digoxin Moderate Reduced digoxin levels
Sulfonylureas Moderate Reduced hypoglycemic effect
Antacids Minor Reduced absorption of isoniazid
Alcohol Minor Increased hepatotoxicity risk
Food (high-fat) Minor Delayed absorption

๐Ÿšจ Major Interactions

  • Warfarin
  • Oral contraceptives
  • Phenytoin
  • Theophylline
  • Ketoconazole
  • Antiretroviral protease inhibitors

โšก Moderate Interactions

  • Corticosteroids
  • Cyclosporine
  • Diltiazem
  • Verapamil
  • Digoxin
  • Sulfonylureas

โ„น๏ธ Minor Interactions

  • Antacids
  • Alcohol
  • Food (high-fat meals)

๐Ÿฝ๏ธ Food Interactions

High-fat meals may delay absorption; avoid tyramine-rich foods with isoniazid

๐Ÿท Alcohol Interaction

Avoid alcohol; increases hepatotoxicity risk

๐Ÿ›ก๏ธ Safety & Warnings

๐Ÿšซ Contraindications

Hypersensitivity, acute liver disease, history of drug-induced hepatitis

๐Ÿ“Š Monitoring Parameters

Liver function tests, sputum culture, chest X-ray, signs of hepatitis

๐Ÿคฑ Lactation Safety

Both drugs excreted in breast milk; use with caution

๐Ÿ’Š Overdose Management

Gastric lavage, activated charcoal, supportive care; monitor liver function

โฐ Missed Dose

Take as soon as remembered unless near next dose; do not double dose

๐Ÿ‘จโ€โš•๏ธ Reviewed by Expert

SaathiMed Expert Panel

MD, PhD - Pharmacology

Reviewed: Jun 30, 2026

๐Ÿ”— View Profile

๐Ÿ˜Š Was this information helpful?

Browse Medicines A-Z

Search our extensive medical database alphabetically.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Back to Medicines Directory
SaathiMed App
SaathiMed App Consult doctors & order medicines faster
Install