Yes, many, if not most, medications are in their "salt" form to aide solubility in a common polar solvent like water or alcohol
is no exception to this and is typically found in Cocaine HCl form.
Usually Cocaine HCl is prepared in a tincture solution with alcohol. It is typically between 5-15% in solution. It is also typically applied with a cotton swab or cotton/gauze soaked in the solution.
The primary use is for stopping sinus bleeding, due to it's vasoconstrictive properties, as well as a local anesthesia when working in and around the sinuses and eyes. The vasoconstrictive effects help control bleeding while the anesthetic properties dull any pain associated with a medical procedure in these sensitive areas.
If a gerbil, lab rat or chinchilla has the liquid form, they may either let it crystallize, though the application of low heat preferably on a teflon pan. Otherwise the solution should be measured and metered for a consistent dosage delivery of no more than about 20mg per dose. That's going to require a bit of math...