Regarding multidrug therapy (MDT) regimens for leprosy as per WHO guidelines, all of the following statements are correct EXCEPT:

## WHO MDT Regimens for Leprosy **Key Point:** The WHO MDT regimen for paucibacillary (PB) leprosy uses **rifampicin, ofloxacin, and minocycline** — but the duration is **6 months**, not the standard PB regimen. The correct PB-MDT is **rifampicin + dapsone + ofloxacin** for 6 months. However, option 0 states the drug combination correctly but the regimen described (rifampicin, ofloxacin, minocycline) is actually a **WHO-recommended alternative regimen for PB leprosy**, not the standard first-line. ### Standard WHO MDT Regimens | Leprosy Type | Duration | Drugs | Dosing | |---|---|---|---| | **Paucibacillary (PB)** | 6 months | Rifampicin + Dapsone + Ofloxacin | Monthly supervised + daily self-administered | | **Multibacillary (MB)** | 12 months | Rifampicin + Clofazimine + Dapsone | Monthly supervised + daily self-administered | **High-Yield:** The combination **rifampicin + ofloxacin + minocycline** is a WHO-approved **alternative regimen** for PB leprosy, but it is NOT the standard first-line regimen. The standard PB regimen includes **dapsone**, not minocycline as the third agent. ### Key Features of Standard Regimens **Rifampicin:** - Most potent antileprosy drug - Given as monthly supervised doses (600 mg) - Renders patient non-infectious within 2 weeks **Dapsone:** - Bacteriostatic agent - Daily self-administered dose (100 mg) - Contraindicated in G6PD deficiency **Clofazimine:** - Slow-acting, bacteriostatic - Used only in MB leprosy - Causes blue-black discoloration of skin - Daily dose: 50 mg **Ofloxacin:** - Fluoroquinolone, bactericidal - Alternative to dapsone in G6PD deficiency - Monthly supervised dose: 400 mg **Clinical Pearl:** Minocycline is NOT part of the standard WHO MDT regimens. It is used in **WHO-MDT alternatives** for specific situations (e.g., dapsone intolerance), but the statement conflates the alternative regimen with the standard PB regimen, making it incorrect as written. **Warning:** Do not confuse the standard PB-MDT (rifampicin + dapsone + ofloxacin) with alternative regimens. The question tests whether you know the **standard first-line combinations**.