Amoxicillin capsules can be taken for toothache with inflammation because toothache is mostly caused by bacterial infection, and amoxicillin capsules are effective against inflammation as a broad-spectrum antibacterial drug. However, oral amoxicillin capsule alone cannot cure toothache, because toothache is caused by pulpitis due to carious tooth decay. Generally, it is necessary to apply high-speed turbine drill to remove the decayed tissue and the lesion that produces toothache in order to treat this disease fundamentally, while taking amoxicillin and other anti-inflammatory drugs can treat the symptoms but not the root cause.