Sources come first
Licensing, dose and safety facts come from the official product information. In the UK that means the MHRA, the summary of product characteristics and the patient leaflet. NICE and the NHS set treatment and funding rules, and Scotland, Wales and Northern Ireland have their own.
Trial results come from the published studies. A manufacturer press release can show what a company announced, but it is never the only source for a clinical claim. Shop pages and social media posts are not used as evidence.
How guides are written
Guides use short sentences and plain words. Benefits and risks sit side by side. Trial figures name the trial, the people who took part and the time point.
A licence, a prescription, NHS funding, pharmacy stock and import permission are different things. Each guide keeps them apart so you know which one applies to you.
Guides never tell you to change your own dose, split pens or use leftover medicine.
Updates and corrections
Every guide shows the date it was last updated. Guides are checked again when a regulator issues a safety warning or a product label changes.
If you find a mistake, use the report form. Corrections are made as soon as the source has been checked.