Slippery elm has been used for years and can help soothe and moisten your throat. Ideal for tickly coughs combined with a dry throat, this herb is extracted from the inner bark of the slippery elm tree, so it's not something you'll be growing on your windowsill. Fortunately, it's easily available in capsule, powder, and you can buy in bulk to make tea. The pleasant-tasting powder is mild-flavored, even a little sweet. Some like the liquid extract form to put on oatmeal, in smoothies, and even give to their pets! In addition to your throat, slippery elm can help soothe and heal mucous membranes throughout the body and is sometimes used for irritable bowel syndrome.