Many over-the-counter options are available for mild anxiety, including: nutritional supplements like L-theanine, melatonin, or s-adenosyl-methionine synthetic pheromone preparations (e.g., dog appeasing pheromone or DAP) body wraps that provide reassuring pressure.
Owners who are looking for a sedative to give to their dogs at home are somewhat limited in their choices.
Acepromazine is the most commonly prescribed oral sedative for dogs.
A potentially better option is to squirt the injectable, liquid form of acepromazine between the gums and cheek of the dog.
Sometimes a veterinarian will recommend a medication that is traditionally used for other purposes for its sedative “side effects.”
For example, the anti-seizure medications phenobarbital and gabapentin are known to have a profound sedative effect when they are first given to dogs, so they can also be prescribed for use before a potentially stressful event.
Possible oral sedative combinations include: acepromazine and Telazol powder (an anesthetic) acepromazine and diazepam (an anti-anxiety drug) diazepam and butorphanol (an opioid pain reliever) phenobarbital and diazepam dexmedetomidine (a pain reliever and anti-anxiety medication), ketamine (an anesthetic and pain reliever), and butorphanol.
This combination can be absorbed through oral mucous membranes.