How we check prices and charges

Medicine prices

The four weight loss medicine price pages are built from the GLP Index, a UK price index of registered online pharmacies. The site pulls a fresh export every day at 13:00 UK time and rebuilds every price table, answer box and calculator from it. The current export is dated 21 October 2026 and covers 80 pharmacies for Mounjaro, 72 for Wegovy, 56 for the Wegovy pill and 32 for Foundayo.

For each pharmacy and each mg dose the index records three things: the price a new customer pays on a first order, the price a returning customer pays, and the date the pharmacy's page was last checked. Both prices are the delivered price with the prescriber consultation included.

The tables on this site show, for each dose, the cheapest discount price for a first order, the cheapest ongoing price and the median first order price across every pharmacy listed. Each pharmacy name and price opens that pharmacy's current offer. Where the offer needs a code, the code is printed beside the price. Where the discount applies through the link, the table says so. A second table on each price page ranks the ten lowest first order prices at the starting dose. Every pharmacy is named with its seven-digit GPhC registration number so you can look it up on the General Pharmaceutical Council register before you order.

An ongoing price under half the first order price is treated as a data error and left out. Pharmacies with no live price for a dose are left out of that dose.

What a price does not include

The price is for the pack size shown: four weekly doses for an injection, or 28 days of tablets. It does not include needles or a sharps bin where the pharmacy sells those separately, faster delivery options, or the cost of a private blood test if the prescriber asks for one. The guide on what the price includes lists the extras to ask about.

NHS charges

The prescription charge, prepayment certificate prices, dental bands, optical voucher values and the Healthcare Travel Costs Scheme rules come from nhs.uk, the NHS Business Services Authority and gov.uk. Scotland's figures come from NHS inform and gov.scot, Wales from gov.wales and Northern Ireland from nidirect. The source link sits at the foot of every page with the date it was read.

The daily run also re-reads each NHS charge on its official page and stops the update if a figure no longer matches. NHS charges change on 1 April in most years. The 2026/27 prescription charge in England was frozen at £9.90 and the dental bands rose on 1 April 2026. Each figure on the site names the nation it applies to, because the four nations charge differently.

Private prices

Prices for private GP appointments, blood tests, dental treatment, testosterone clinics and erectile dysfunction medicines are read from the provider's own price page on the date shown. The page is linked in the sources. These prices move more often than NHS charges, so check the provider's page before you commit.

Clinical facts

Anything about how a medicine is licensed, who it is for or how it is taken comes from the MHRA, NICE or the medicine's summary of product characteristics. A company selling the product is never the source for a clinical fact.

Corrections

If a figure is wrong, tell us through the contact page with the page address and the source showing the correct figure. The page is corrected and the check date moves to the day of the correction. The editorial policy sets out the full process.