For those with other conditions
Just thought I'd mention this website.
I've ordered 4 of the silicon ones, 2 because I'm Steroid dependent and 2 because I have Asthma. They also provide metal ones and steroid alert cards. Brilliant products, wonderful service, and very fair prices. I highly recommend them.
"Women and cats will do as they please, and men and dogs should relax and get used to the idea." Robert A Heinlein