Yes, HomeoPet medicines are preserved in 20% USP alcohol, which is pure ethyl alcohol, used for preserving homeopathics. Because there is only a drop or two of alcohol per dose, most pets will have no response to oral dosing. In rare cases, a cat or dog may be sensitive to alcohol and salivate excessively, or shake his head in response to the alcohol content. This can be alleviated by putting the drops on food/treat and letting it sit for 20 minutes before presenting it to your pet. Alternatively, placing drops in a small amount of water and letting sit for 20 minutes will prevent a reaction. NOTE: When dosing very small birds and animals, always dilute the dose into fresh drinking water, do not administer directly to the animal.