Treatment
Natural cycle IVF uses little or no stimulation medication and collects the one egg that develops naturally. It avoids OHSS and reduces drug costs, but cancellation rates are higher and success per cycle is lower, so it suits a small group of patients rather than being a general alternative.
Also known as: unstimulated IVF, drug-free IVF
Sources
- Royal Australian and New Zealand College of Obstetricians and Gynaecologists (ranzcog.edu.au)
- European Society of Human Reproduction and Embryology (eshre.eu)
Last reviewed: 10 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.