Medicines & protocols
Natural cycle IVF avoids stimulation drugs but produces at most one egg, so cancellation rates are high and success per cycle is low. It is used mainly where stimulation is contraindicated or has repeatedly produced almost no eggs.
Also known as: unstimulated IVF, drug-free IVF
Related Canada guides
Sources
- ESHRE guidance (used where Canadian wording is unavailable)
Last reviewed: September 9, 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.