Advertising belongs to advertising, and patents belong to patents. It doesn’t matter. If the efficacy is not as good as advertised, then it is false advertising. You can report it. Having a patent only shows that this kind of drug is protected by patent law. Even if others know it, as long as the secret recipe is known, it can be reported. You cannot make unauthorized medicines, even if your quality and effect are the same as those of the right holder, you are still a "counterfeit medicine". As for the efficacy of advertising, the patent law cannot control it
There are also some manufacturers who use patent applications to deceive consumers. Most people who don’t know this think this is some great medicine. In fact, it’s just a gimmick