Undernutrition is the leading driver of TB mortality in India. The RATIONS trial demonstrated that severe undernutrition (BMI < 16) increases mortality fivefold. Providing specific macro-nutritional targets alongside ATT is a critical standard of care.
Please complete the anthropometric data in the Clinical Pathway tab and synthesise the pathway to generate personalized nutritional targets.
Clinical Teachable MomentsThe "RIPE" Mnemonic for First-Line Toxicity
R - Rifampicin:Red/Orange secretions, Rapid CYP450 induction.
I - Isoniazid (INH):Injures Nerves (Neuropathy - give B6), Injures Hepatocytes (Hepatitis).
P - Pyrazinamide:Polyarthralgia (hyperuricemia), most Potent hepatotoxin.
E - Ethambutol:Eye issues (Retrobulbar optic neuritis, red-green color blindness).
⚠ Malpractice Warning: FDC Quality in India
Bioavailability Trap: Substandard generic Fixed-Dose Combinations (FDCs) in the private sector frequently fail to deliver adequate Rifampicin due to poor pharmaceutical formulation. If a patient is failing therapy on private sector FDCs, strongly consider switching to NTEP-supplied FDCs or prescribing individual loose drugs to guarantee absorption.
DR-TB Classification Definitions (NTEP 2025)
DS-TB: Pan-susceptible to First-Line drugs.
H-Mono/Poly DR-TB: Resistant to Isoniazid (H), but definitively Susceptible to Rifampicin (R).
MDR/RR-TB: Resistant to Rifampicin (with or without H resistance), but Susceptible to Fluoroquinolones (FQ).
Pre-XDR TB: MDR/RR-TB with additional resistance to any Fluoroquinolone.
XDR TB: Pre-XDR TB with additional resistance to Bedaquiline (Bdq) and/or Linezolid (Lzd).
NTEP strictly prioritises shorter all-oral regimens. However, BPaLM/BPaL are strictly contraindicated in patients < 14 years or those with severe EPTB. The engine forcefully reroutes these phenotypes to the 18-20 Month Longer Oral Regimen.
Dietary Bioavailability Traps
Drug absorption is highly variable based on gastric contents. Rifampicin Cmax is severely blunted by food, risking acquired resistance. Conversely, Bedaquiline absorption increases nearly two-fold when administered with a high-fat meal. This module dictates specific food timing to prevent therapeutic failure.
Abbreviations: NTEP (National Tuberculosis Elimination Programme) · DST (Drug Susceptibility Testing) · LPA (Line Probe Assay) · mWRD (molecular WHO Rapid Diagnostic) · CBNAAT (Cartridge Based Nucleic Acid Amplification Test) · TPT (TB Preventive Treatment) · BMI (Body Mass Index) · FDC (Fixed-Dose Combination) · H (Isoniazid) · R (Rifampicin) · Z (Pyrazinamide) · E (Ethambutol) · FQ (Fluoroquinolone) · Lfx (Levofloxacin) · Mfx (Moxifloxacin) · Bdq (Bedaquiline) · Pa (Pretomanid) · Lzd (Linezolid) · Cfz (Clofazimine) · Cs (Cycloserine)
⚠ Clinical Disclaimer: This engine mathematically executes the NTEP India Guidelines. It cannot account for severe hepatic impairment (Child-Pugh C), terminal renal failure, or complex drug-drug interactions (e.g., ART regimens). Always verify calculated outputs with clinical judgement.
Algorithm References & Evidence Base
Central Tuberculosis Division, Ministry of Health and Family Welfare, Government of India. National Guidelines for Management of Drug Resistant Tuberculosis. New Delhi: MoHFW; 2025.
Central Tuberculosis Division, Ministry of Health and Family Welfare, Government of India. Guidance Document on Nutritional Care and Support for TB Patients in India. New Delhi: MoHFW; 2024.
Bhargava A, Bhargava M, Meher A, et al. Nutritional supplementation to prevent tuberculosis incidence in household contacts of patients with pulmonary tuberculosis in India (RATIONS): a field-based, open-label, cluster-randomised, controlled trial. Lancet. 2023;402(10405):927-940.
How to Cite This Tool
AMA Style: Umakanth S. Comprehensive Tuberculosis Treatment Pathway. MEDiscuss. Published 2026. Accessed .
Vancouver Style: Umakanth S. Comprehensive Tuberculosis Treatment Pathway [Internet]. MEDiscuss.org; 2026 [cited ]. Available from:
