What if my cat doesn't respond immediately to GS, or if it doesn't improve after a few weeks of treatment?

We can observe what will happen in the coming days and hope for the best. If a reaction develops at the injection site, it is possible that this is the cause of the symptoms we are seeing. It can result in an open wound, but it can also improve on its own. Although no one wants serious reactions after an injection, it can be said that an injection is still a better choice.