What is the antidote for serotonin syndrome?

The antidote for serotonin syndrome is cyproheptadine. This medication is an antihistamine with antiserotonergic properties, making it effective in treating symptoms of serotonin syndrome, which can occur due to excessive serotonergic activity in the central nervous system. Cyproheptadine helps to antagonize serotonin receptors, thus alleviating the effects of an overload of serotonin, which can lead to symptoms such as agitation, confusion, rapid heart rate, and increased muscle tone.

In contrast, sertraline is an SSRI (selective serotonin reuptake inhibitor) used to treat depression and anxiety, and it would not help in the case of serotonin syndrome; instead, it could potentially worsen the condition. Flumazenil is used as a benzodiazepine antagonist and is not effective for serotonin syndrome; it is typically employed in cases of benzodiazepine overdose. Dopamine, while it has a role in various medical therapies, does not address the imbalance caused by excessive serotonin levels and is not a treatment for serotonin syndrome.