Are you curious about the benefits and possible side effects of catnip? While many cats love catnip, not all find it appealing. For instance, catnip tends to have little effect on kittens. So if you’re excited to give this a try, wait until your cat is around six months of age. This article by Cathealth.com explains why catnip is a wonder plant for cats. Read more about how nepetalactone, the active ingredient in catnip, can reduce stress, encourage good behavior and bring out the frisky in your cat!