The List
drugs that cause an excess of calcium (hydrochlorothyazide)
hypervitaminosis D
high doses of methotrexate, a popular cancer drug, can cause bone marrow and gastrointestinal mucosa to become toxic
L-Dopa will improve working memory while at the same time having a deteriorating effect on complex learning skills, function and a severe depletion of serotonin.
Scopolomine: parasympathetic postsynaptic receptors: dry mouth, throat and nasal passages in overdose cases progressing to impaired speech, tachycardia, excitement, restlessness, hallucinations, or delirium.
Heavy Metal toxicity (iron, mercury)
Olomoucine is a cyclin-dependent kinase (CDK) inhibitor. If taken with psychiatric drugs, such proteins can increase astrocyte proliferation and can also lead to cell death, furthering cellular damage at the neuronal lesion site.