The new card will work like a chip and Pin bank card and be taken in most places that sell gluten-free food, including supermarkets, shops, community pharmacies and online stores, according to the Welsh government.
It would not say how much people will be given – just that it will vary by person and be regularly reviewed – or how much would be spent on the scheme.
Ministers anticipate it will be “cost neutral” and not add any more to the NHS budget.
The prescription model will still be available in Wales, which is similar to schemes in England, Scotland and Northern Ireland.