To add to this, stimulants can release dopamine or even bind to dopamine receptors in parts of the brain responsible for emesis, which the CTZ is part of. Adde

To add to this, stimulants can release dopamine or even bind to dopamine receptors in parts of the brain responsible for emesis, which the CTZ is part of. Adderall might lead to downstream raising of serotonin levels, but the drug itself doesn't act on serotonin and I'd be genuinely surprised if the emesis symptoms it can cause were mediated by serotonin and not the dopamine it acts on. Drugs that block dopamine receptors in the CTZ, like compazine, are regularly prescribed as antiemetics.