I agree with everyone on this. Many of these `suppliments` advertised for small pets are just gimmicks and not that beneficial. I`ve never had or felt the need to add any suppliments to my hamsters diet and instead, keep my options open as regards adding new things into the diet that may be of some benefit. But I wouldn`t consider shop bought or online vitamin/mineral/salt additions. My advice would be, keep looking at what you feed and much like out own diet, look at adding something new every so often to keep the immune system good and the overal health in check.