當(dāng)歸具有補(bǔ)血活血、調(diào)經(jīng)止痛、潤腸通便的功效。1.補(bǔ)血活血:用于血虛諸證。當(dāng)歸甘溫質(zhì)潤,長于補(bǔ)血,是補(bǔ)血之圣藥。2.調(diào)經(jīng)止痛:用于血虛血瘀癥的月經(jīng)不調(diào)、經(jīng)閉、痛經(jīng)等??梢援?dāng)歸補(bǔ)血活血,調(diào)經(jīng)止痛。3.潤腸通便:用于血虛腸燥便秘。