Which of the following sentences is correct?

• Antidote (to/for/aganist)
English Meaning: A chemical, esp. a drug, that acts against the bad effects of a poison to limit the harm it can do:
Bangla Meaning: বিষ বা রোগ প্রতিষেধক ওষুধ।

Correct sentence: Regular exercise is the best antidote to tiredness and depression.

Source: Cambridge Dictionary, Oxford Learner's Dictionary, and Accessible Dictionary by Bangla Academy.