Ovulation Induction at Yaal Fertility Centre, Chennai

Ovulation induction medications broadly fall into two categories, and the choice between them depends on your individual profile rather than being interchangeable.

Oral medications — principally letrozole and clomiphene citrate — are typically tried first. They work by altering the hormonal feedback signals the brain sends to the ovaries, encouraging the development of one or more follicles over a course of several days early in the cycle. They are taken by mouth, require less intensive monitoring than injectable options, and carry a comparatively low risk of overstimulation.

Injectable gonadotropins act more directly on the ovaries themselves and are generally used when oral medication has not produced ovulation, or when a stronger, more controlled response is needed — for example ahead of an IUI cycle. Because gonadotropins act more powerfully, they require closer monitoring and carry a higher chance of producing more than one mature follicle at once.

The exact medication, dose, and duration are decided individually by Dr. Rukkayal based on your hormone levels, ovarian reserve, and how you have responded to any previous cycles — there is no standard dose that suits everyone, and this page intentionally does not state one.

Monitoring is what turns ovulation induction from a guess into a planned procedure. Ultrasound scans, usually starting a few days into the medication course, track how follicles are developing and allow the timing of ovulation to be predicted with reasonable accuracy, rather than estimated from cycle-day calendars alone. Blood tests may be added to check hormone levels alongside the scans.

Once a follicle is judged mature, one of two paths is generally followed. In timed intercourse, the couple is advised on the optimal days to conceive naturally around the predicted ovulation window. In ovulation induction combined with IUI, washed and concentrated sperm is placed directly into the uterus around that same window, which can improve the chances of sperm and egg meeting, particularly where there is a mild sperm or cervical mucus factor involved.

Which path is recommended depends on the reason for treatment, sperm parameters, and how many previous unmedicated or medicated cycles have already been tried without success.

Ovulation induction is generally low-risk, particularly with oral medication, but it is not risk-free, and two risks in particular are worth understanding before starting.

Ovarian Hyperstimulation Syndrome (OHSS) occurs when the ovaries respond more strongly to medication than intended, causing swelling and fluid shifts. It is considerably less common with oral medication than with injectable gonadotropins, and severe cases are rare with the careful, monitored dosing used in ovulation induction — but the risk is the reason monitoring is not optional, particularly for women with PCOS, who tend to have a more sensitive ovarian response.

Multiple pregnancy is the other significant risk. Because ovulation induction can cause more than one follicle to mature and release an egg in the same cycle, the chance of twins — or, less commonly, a higher-order multiple pregnancy — is higher than in an unmedicated cycle, and rises further with gonadotropins compared with oral medication. Twin and higher-order pregnancies carry meaningfully greater risks for both mother and babies, including preterm birth, which is why monitoring is used to decide whether it is safe to proceed with intercourse or insemination in a given cycle, and why a cycle may occasionally be cancelled if too many follicles develop.

Dr. Rukkayal will discuss both risks specifically in relation to your medication choice and ovarian response before and during treatment.