As of 2015, Walmart sells Tricalm hydrogel online. Other retailers that sell Tricalm include Walgreens, CVS, Amazon.com, Drugstore.com and Meijer. Giant, Wegmans, Martin's and Stop & Shop carry the product as well, according to Tricalm.
With the active ingredient of aluminum acetate 0.2 percent, Tricalm hydrogel is an anti-itch preparation that does not contain steroids, according to the manufacturer. Tricalm works by reducing the sensitivity of type C nerves, which cause inflammation, itching, burning and stinging sensations. It is commonly applied to skin irritations, such as poison ivy, poison oak, rashes, bug bites and dry skin. The hydrogel does not numb the skin, and it can be applied as often as needed.