The best estimate for the bioavailability of oral levodopa given with carbidopa is 85-86% (Robertson et al, 1989, Table 3, p. 64). The relevant sentence here should instead read: %%A 35-year-old patient weighing 70 kg would receive a total dose of 64 mg (in 32 mL of normal saline); an oral dose of 75 mg would provide the same total absorbed dose, though over a slower time scale (Robertson et...