Spices like basil are known to boost acetylcholine. Spices good for boosting acetylcholine include allspice, basil, cumin, peppermint, sage, thyme and turmeric. Alcohol increases GABA levels, but make sure you stop at one or two glasses a day -- a man might not be able to maintain an erection and a woman could nod off. Good antidepressant spices for serotonin include anise, dill, marjoram, nutmeg, peppermint, saffron, spearmint and turmeric.