Natural-cycle IVF and mini-IVF: fewer drugs, but who is it for?

I regularly receive enquiries about ‘natural’ IVF, often following a first round of stimulation that was a difficult experience. It’s a legitimate question. The answer depends on your ovarian reserve, your age and — this is the point that’s often overlooked — the distance between your home and the clinic.

What are we talking about?

Natural-cycle IVF is carried out with little or no stimulation. We monitor the follicle that your body selects each month using ultrasound scans and blood tests, trigger ovulation at the right time and retrieve that single egg approximately 36 hours later. Some teams add an antagonist to prevent premature ovulation: this is known as a modified natural cycle.

Mini-IVF (or mild stimulation) uses low doses: oral clomiphene citrate or letrozole, sometimes combined with low doses of gonadotrophins. The aim is to obtain two to five eggs instead of ten or more. For a comparison with conventional protocols, see stimulation protocols.

Who is it for?

• Poor responders, for whom high doses do not result in more eggs (see poor responders in IVF).
• Women for whom strong stimulation is not recommended: a history of hyperstimulation, certain hormone-dependent cancers, or a risk of thrombosis.
• Patients who cannot tolerate the side effects or have personal objections to intensive treatment.
• Couples where infertility is primarily male-factor, with a young partner and good ovarian reserve, in certain cases.

The chances: per cycle or overall?

Per cycle, the chances are lower than with conventional stimulation, for one simple reason: fewer eggs, therefore fewer embryos, and consequently fewer possible transfers. The cycle may also be cancelled if ovulation occurs before the egg retrieval or if the single egg is not fertilised. Advocates of ‘gentle’ IVF base their argument on cumulative chances: several short cycles, which are cheaper and better tolerated, can come close to the success rate of a conventional cycle. This is true — provided that cycles can be carried out in succession. See how to interpret success rates.

Costs in Greece

Few Greek clinics publish a separate price list for the natural cycle. In June 2026, a clinic in Athens quoted a price of €1,850 for a natural IVF/ICSI cycle, compared with around €3,400 to €3,900 for conventional IVF in the price lists published by several clinics. As a rough guide, expect to pay between €1,500 and €2,500 per cycle excluding medication; the medication itself costs considerably less than with conventional stimulation (see medication in Greece). Any embryo freezing and PGT-A will incur additional costs.

The real problem when coming from abroad

A natural cycle cannot be scheduled: it is your follicle that determines the day of the egg retrieval, give or take a day or two. You therefore need to be on site for the final check-ups, with a flexible flight ticket. And if you’re planning multiple cycles, you’ll need to make several trips: four five-day stays can quickly end up costing more – in terms of both time and travel expenses – than the price difference compared to conventional IVF.

There are two options. The first: have your ultrasound scans carried out at home, with a doctor who sends the results to the Greek clinic, and only travel there for the egg retrieval. The second: accumulate embryos over several cycles by freezing them, then carry out a single frozen embryo transfer. Both require close coordination — this is precisely the sort of schedule I draw up with patients and the clinic.

In summary

Mild IVF has its place, particularly for women with a poor response and those with contraindications to stimulation. For a young patient with a good ovarian reserve who needs to travel, a well-dosed conventional stimulation cycle is generally more effective per trip. This is a decision to be made with the doctor, based on the figures.

Frequently asked questions

Triada Baloukoudis
Independent IVF patient coordinator in Thessaloniki, with 24 years of experience supporting patients travelling from abroad. More · Contact · Facebook