(slang) Oxygen. / (slang) Orgasms.

(informal) Vitamin D.

(humorous, slang) Ibuprofen.

Any of several fat-soluble vitamins, found in plants, that act as antioxidants and are essential for reproduction; the tocopherols.

Any of the water soluble bioflavonoids that promotes the resistance of capillaries to permeation. / (slang, euphemistic) Prozac, an antidepressant.

Any of several related fat-soluble vitamins, found in leafy green vegetables, essential for blood clotting. / (slang) The drug ketamine.

(historical) folic acid

(dated) essential fatty acids

vitamin B₇ or biotin. / (medicine, slang) Haloperidol.

(biochemistry) Any member of the vitamin B complex.