Err...phospha-what? This hard-to-spell chemical is all-around good for your health, and it’s found naturally in cells, as well as in foods like eggs and soybeans. Phosphatidylcholine (PC) is often referred to as lecithin, and while related, they’re not the same therapeutic agent. Also, unless you really love soybeans, it’s pretty hard to get enough PC in your diet. That’s why many people turn to supplements (as a pill, or injected under the skin) to boost brain health and the immune system, and to help repair the liver, dissolve gallstones, and reduce symptoms of ulcerative colitis. PC is also used for eczema and to increase the effectiveness of kidney dialysis.