Fertility treatment add-on

Add-ons are often charged separately and many have limited evidence that they improve the chance of a baby. The HFEA reviews the evidence for add-ons and publishes a rating for each; see the HFEA add-ons page for the current rating, as evidence can change. Ask what an add-on costs, what the evidence is and whether it carries any risk.

Also known as: IVF add-on, add-ons, optional extras

Last reviewed: 23 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.