。
Please take this prescription to the pharmacy.
Literal
Pharmacy [to-に] this prescription [obj-を] carry-go [request-てください].
持って行く ('carry and go') is a compound verb of motion — the pattern [て-form of transport verb] + 行く/来る expresses bringing or taking something along with the motion. Paired with ~てください for a polite request. 処方箋 is worth noting: the 箋 is a relatively rare kanji (meaning 'slip of paper') that also appears in 付箋 ('sticky note').