Many mainstream medicines absolutely are junk, e.g. phenylephrine as a nasal decongestant. Moreover many can be fairly harmful, sometimes causing permanent damage. As a case in point, I have a prescription medicine induced permanent tinnitus. Other prescription medicines gave me kidney injury and high blood pressure, but at least those effects were temporary and reversible. Practically all rx medicines also come with an assortment of harmful additives and even petroleum dyes (artificial colors) that are known to be inflammatory and injurious.

Anyhow, it's not the angle of discussion that I was going for. Your assertion that homeopathy as a whole is a scam is rooted in a tiring misconception that all of its products are too dilute to work which is a falsity. Numerous homoeopathic products absolutely have a sufficient amount of the product to result in a biological effect.