Antonyms are words that have opposite meanings as the original word. The term "Disodium Salt Succimer," which refers to a medication used to treat heavy metal poisoning, can have antonyms related to its properties or effects. Some of these antonyms could be toxic, harmful, dangerous, or poisonous, as Disodium Salt Succimer works by binding to heavy metals and facilitating their elimination from the body. Additionally, words like ineffective, useless, or ineffective can be antonyms for the drug's efficacy in treating heavy metal toxicity. In contrast, safe, benign, effective, or beneficial are some antonyms that can denote the opposite of Disodium Salt Succimer's negative effects.