Pharmacology A Patient with TB under treatment complains of tinnitus and decreased hearing. Which drug is a causative factor: A lsoniazid B Streptomycin C Ethambutol D Pyrazinamide 💡 Explanation A Patient with TB under treatment complains of tinnitus and decreased hearing. Which drug is a causative factor: ✓ Correct Answer: B. Streptomycin