Agree that not all pharmacies have these HC1 forms, and you may need to get one from the doctors surgery. So I don't think the pharmacist said anything wrong there. However, he is wrong about the exemptions. ANYONE on low income can apply for an HC2 form for help towards health costs.
I think when he said about there needing to be certain illnesses and conditions, that he is thinking of an exemption where you actually don't have to pay for prescriptions at all, which people will get if they have certain illnesses. So yes it does sound like he is getting muddled.
As I said, anyone on low income can qualify for help with health costs via the HC1 form/HC2 certificate. If you have a household income of more than £20K, it's unlikely you will qualify for any help.
The HC2 form that you receive after sending in the HC1 form will tell you how much you have to pay toward dental, glasses, eye tests, travel costs, wigs, various medical aids etc, and prescriptions.
So for example it will say...you need to pay:
£33.50 towards dental
£13.00 towards an eye test
£20.00 towards a glasses voucher
£9.00 towards prescriptions
etc.
So if you are allowed an NHS voucher towards glasses (which is usually around £48.00 I think,) you need to pay £20.00 towards it, so you get £28.00 off the glasses.
Also, it means even if you have £233 of dental treatment (stage 3,) you will only have to pay £33.50. BUT you will have to pay for prescriptions.
As a few people have said; the prepayment cards are a good idea, because most of the time you don't get free prescriptions; even with the HC2. It's especially good if you think you will have at least one prescription a month. It's only about £100 for a year. Most pharmacies provide the application for that too.
If not, ask the doctors surgery for one.