A 45-year-old male patient weighing 73 kg attends your asthma clinic. The consultant has previously prescribed theophylline three times per day. The equation below, is used to calculate a maintenance dose of theophylline. D = Cssav x Cl x t / F x SD = maintenance dose in milligrams C =Target mid- point at steady state =12 mg/L Cl = 0.06 L/hour/kg τ = dosing time interval in hours F=1 S=1 Theophylline is available as 200 mg tablets that cannot be split. How many tablets per dose should this patient be prescribed? Give you answer as the most appropriate whole number of tablets.

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