got him neutered, and bought him calming natural medication.

Unlike other types of anxiety medications, benzodiazepines work immediately to calm your cat
Treat your cat with a prescription cat drug designed to calm and sedate cats and reduce motion sickness, one of the major causes of stress for cats during car travel. The Merck Veterinary Manual recommends medications like chlorpromazine, phenobarbital and diazepam. These drugs are available from your vet, who can also determine the appropriate dosage for your cat's age and weight.
Feb 16, 2017 - Use other non-medication calming aids
“Casper, our Persian cat which we adopted as a 5 month old kitten, has had an anxiety disorder which causes him to cry continuously through the night, starting at 3 a.m. and continuing until it is light. For the past 11 years, our vet has medicated him with Elavil (amitryptyline) a tricyclic antidepressant drug used to treat depression in humans. As the years went on, we need to continue to increase his dose. We found a partial solution in using a calming collar, which contains mother cat pheromones. However, the problem was not solved. Since buying the Thurndershirt for Casper in December, 2012, he has been quiet at night and is completely off medication. He is also much more affectionate during the day. We have observed a synergistic effect with the collar plus the ThunderShirt and continue to use both. I have recommended ThunderShirt to everyone I know with pet behavioral problems. Thank you so much for a solution to Casper’s anxiety problem without drugs! There are a few other non-medicated options available to calm an anxious or stressed catcat calming medication | Allivet Pet Care BlogDog Anxiety Medication: Dog Calming Treats & Pills | Petco
Feline anxiety medications are powerful drugs that are designed to be taken regularly, not as needed in stressful situations. Generally, drugs that address cat anxiety are either psychotropic or pheromone-based. These drugs stimulate the production of serotonin in your cat's brain, which is associated with calm and tranquil situations. Feline anxiety medications tend to work quickly and effectively to reduce common symptoms of cat anxiety, but they may alter your pet's personality and energy levels. Just like some humans, cats are susceptible to motion sickness. Cats also hate new routines and environments, which can make car travel very stressful for them. Pet owners can help their cats get used to both the carrier and the car to help remove the foreignness of the situation. Your vet can also suggest prescription medications to help calm your cat and soothe away motion sickness for a relaxed travel experience.Medications to treat feline anxiety are highly effective, but may cause detrimental effects to your cat's disposition and personality. As such, it is best to try to provide a calming and tranquil environment for your cat before attempting a drug regimen for feline anxiety. Your veterinarian can help you to determine which treatment procedure will be best for you and your cat. Like people, cats can become stressed by a variety of situations. Causes of stress include moving to a new home, adding another member to the household or just taking a trip to the vet. A calming natural or prescription medication could be just what your stressed-out furbaby needs to relax.For both humans and cats, the over-the-counter medication Benadryl can treat more than just allergies. The side effects of Benadryl can help ease other conditions. Even in humans, the active ingredient in Benadryl is used to calm the nerves. As always, consult your veterinarian before giving your cat human medication.A veterinarian must prescribe prescription anti-anxiety medication for your cat if she is experiencing prolonged periods of stress or exhibits problem behaviors like urine marking or aggression. These types of medications change the chemistry of your cat's brain, usually over a period of time. Some of these medications can be used long-term, like SSRIs, while others, like benzodiazepines, can't because they can affect your cat's memory and may make her sluggish. Most must be administered daily to see any results. Cats taking prescription calming medications should have a yearly blood test to determine if their kidneys and liver are functioning correctly. These medications are metabolized by the kidneys and liver, so cats with medical issues related to these organs should not receive them.