Found the breakdown of ingredients in cryoderm. The only ingredient listed as medicinal is menthol, so if you can't afford cryoderm, dollar-store menthol is an alternative.
Medicinal Ingredients: d-Menthol USP (Mentha arvensis, leaf) …. 10.0% w/w
Non-Medicinal Ingredients: Acrylates, Arnica, Boswellia, Citric Acid, Denatured Alcohol, Dimethyl Sulfone (MSM), Eucalyptus Oil, Glycerin, Ilex Paraguariensis Leaf Extract, Peppermint Oil, water, Triethanolamine.