Complex sentence: Caffeine, a common additive to analgesic drugs, enhances the analgesic potency of paracetamol-containing analgesics by 41%, in a 1996 Boitel study Boitel, N. (1996).
Split into simpler sentences: Caffeine, a common additive to analgesic drugs, enhances the analgesic potency of paracetamol-containing analgesics by 41%. In a 1996 Boitel study Boitel, N. (1996).