Clindamycin 0.5 g, per oral (po) every 9q) 8 h

Since the units of measurement are different, a conversion is necessary

First, perform the ratio & proportion method of conversion to change grams to milligrams.

1g : 1000mg : : 0.5 g : X mg
1000 x 0.5 = 500
X = 500 mg

Second, (D / H) x V = (500 / 250) X 1 tab = 2 tabs Clindamycin