Treatment add-ons
Ratings reflect whether good-quality evidence shows an add-on improves live birth rates, and flag possible risks. Antega does not reproduce individual ratings because they are updated — always check the HFEA page directly.
Also known as: traffic light rating, add-on rating
Related United Kingdom guides
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.