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OVARIAN STIMULATION

A higher dose won't make more eggs than you have.

Ovarian stimulation uses medicines to help eggs mature that your ovaries had already started this month. The dose is set by your egg reserve and adjusted at every scan.

  • 8 to 12 days for IVF
  • Scans every 2 to 3 days
  • Dose set by your AMH and scan
  • Freeze-all when OHSS risk is high
Ovarian stimulationDiagram of an ovary during stimulation: several follicles growing, measured by ultrasound, before a trigger injection. 1 Follicles recruited this month; 2 Injections help several grow together; 3 Scans measure each follicle; 4 Trigger ripens the eggs.1Follicles recruitedthis month2Injections helpseveral growtogether3Scans measure eachfollicle4Trigger ripens theeggsOvarian stimulationDiagram of an ovary during stimulation: several follicles growing, measured by ultrasound, before a trigger injection. 1 Follicles recruited this month; 2 Injections help several grow together; 3 Scans measure each follicle; 4 Trigger ripens the eggs.1Follicles recruited thismonth2Injections help severalgrow together3Scans measure eachfollicle4Trigger ripens the eggs
  1. Follicles recruited this month
  2. Injections help several grow together
  3. Scans measure each follicle
  4. Trigger ripens the eggs
Diagram of an ovary during stimulation: several follicles growing, measured by ultrasound, before a trigger injection · Treatment · journey

Is this right for you?

Stimulation is part of your plan if any of these apply.

Worth discussing if

  • You're starting IVF or egg freezing
  • You're starting IUI and don't ovulate regularly
  • You have PCOS and worry about over-response
  • Your AMH is low and you were told to raise the dose
  • A past cycle gave fewer eggs than expected

PROBABLY NOT YET

Stimulation matures eggs already started that month. It does not fix anything else.

  • You are still trying naturally, and ovulating. Start with tests, not medicines.
  • Neither of you has been checked yet. No stimulation starts until both of you are checked.
  • Your tubes are blocked, or there is a sperm problem. It cannot fix blocked tubes or a sperm problem.
  • You have been on tablets for more than about six ovulatory cycles. Tablets are usually reviewed after about 6 ovulatory cycles.
Yes, ask Dr Vani's team

Still trying naturally and ovulating? Start with tests, not medicines.

01

What is ovarian stimulation?

Ovarian stimulation is the use of tablets or hormone injections so that follicles mature that would otherwise be lost that month.

Each month your ovaries start a small group of follicles. Usually one wins and the rest fade. Stimulation changes the hormone signal so that either one matures reliably, or several mature together. It does not draw on eggs meant for future months.

02

Is stimulation for IUI different from IVF?

Yes: for IUI or ovulation induction the aim is one or two follicles, and for IVF the aim is several eggs.

In IUI, fertilisation happens in the body, so every mature egg could become a baby. Too many follicles means a real risk of twins or triplets, so we cancel or change the plan when too many grow. In IVF the eggs are collected, and how many embryos go back is a separate decision, never more than two.

IUI at JananamOvulation induction with tablets
03

Which medicines and protocols are used?

Most IVF cycles at Jananam use daily FSH injections with an antagonist protocol, which is shorter and allows the safer agonist trigger.

Letrozole or clomifene tablets are used to help ovulation for IUI or timed intercourse. Gonadotropins (FSH, sometimes with LH) are small injections under the skin, used for IVF. An antagonist injection stops eggs releasing too early. The trigger (hCG or a GnRH agonist) ripens the eggs, and collection follows about 34 to 36 hours later. A long agonist protocol or a milder protocol still suits some women. [CONFIRM: antagonist protocol is Jananam's usual default]

04

What is OHSS, and how do you reduce it?

OHSS (ovarian hyperstimulation syndrome) is an over-response where the ovaries swell and fluid leaks into the abdomen, and we reduce it by using an agonist trigger and freezing all embryos.

Mild OHSS feels like bloating, discomfort and nausea. Severe OHSS is less common: breathlessness, fast weight gain, passing little urine, a swollen tummy. It needs same-day hospital assessment. Risk is higher with PCOS, a high AMH or many follicles. For these women we use an antagonist protocol, an agonist trigger and a freeze-all, and we transfer in a later cycle.

Honest note

A freeze-all approach is particularly important in women at risk of OHSS, such as some women with PCOS. Using a GnRH agonist trigger and freezing the embryos can significantly reduce this risk.

Why most of our transfers are frozen
05

Why do women respond differently to stimulation?

Response depends mostly on age and egg reserve, which is why a higher dose cannot make eggs your ovaries don't have.

AMH and the antral follicle count on scan predict response before you start, so your dose is chosen, not guessed. Weight, thyroid, smoking and past ovarian surgery also matter, and some can be changed first. High responders need a gentler plan to avoid OHSS. Low responders rarely gain from a higher dose; they gain from collecting eggs over more than one stimulation.

Honest note

In low ovarian reserve, our strategy is egg accumulation and individualised stimulation, including dual stimulation, rather than simply higher doses.

Dual stimulation for low reserve
06

What can't stimulation do?

Stimulation cannot create new eggs, improve egg quality, or undo the effect of age.

It matures eggs already started that month. It cannot get past blocked tubes or a sperm problem, so repeating tablets on their own without a wider plan wastes time. Tablets are usually reviewed after about 6 ovulatory cycles [CONFIRM: Dr Vani's limit, same as ovulation induction page].

IVF stimulation, day by day.

Typical timings for an IVF cycle. IUI stimulation is shorter and gentler. Your calendar comes with your plan.

  1. 1

    Egg reserve check Before the cycle

    AMH blood test and an antral follicle count scan set your starting dose. Your partner's semen analysis is done too.

  2. 2

    Baseline scan Day 2 or 3 of your period

    Checks the ovaries are quiet with no cysts. Injections start the same day.

  3. 3

    Daily injections About 8 to 12 days

    Small injections under the skin of the tummy. Most women self-inject within a few days. [CONFIRM: who teaches the first injection, and where]

  4. 4

    Monitoring scans Every 2 to 3 days

    Scans measure each follicle, sometimes with a blood test. The dose goes up, down or stays. [CONFIRM: typical number of visits; Thiruporur available?]

  5. 5

    Antagonist added Usually from about day 5 or 6 of injections

    Stops your body releasing the eggs before collection.

  6. 6

    Trigger injection When the lead follicles are ready, usually 17 to 20 mm

    Given at an exact time at night. hCG, or a GnRH agonist if your OHSS risk is high.

  7. 7

    Egg collection About 34 to 36 hours after the trigger

    Under sedation at Neelankarai, about 20 to 30 minutes. Your eggs go straight to our lab.

Your first visit

1

Talk

Your cycles, past stimulation doses and how you responded.

2

Test

AMH, antral follicle scan, and semen analysis for your partner.

3

Plan

IUI or IVF goal, your protocol, and your starting dose.

4

Treat

Injections start on day 2 or 3 of your next period.

Questions patients ask.

Still unsure? Ask us on WhatsApp — a real person replies.

What is ovarian stimulation in IVF?

Ovarian stimulation in IVF is about 8 to 12 days of daily hormone injections that help several eggs mature at once, so more than one can be collected. Scans every few days guide the dose, and a trigger injection times egg collection.

How many injections are needed for IVF stimulation?

Most women have one or two small injections a day for about 8 to 12 days, plus an antagonist injection in the second half and one trigger injection. The exact number depends on how your ovaries respond.

Do stimulation injections hurt?

Most women describe them as a quick sting. They are small injections under the skin of the tummy, and self-injecting becomes routine within days. Bruising at the site is common and harmless.

What should I avoid during IVF stimulation?

Avoid smoking, alcohol and hard exercise such as running or heavy lifting while your ovaries are enlarged. Keep to your normal routine, sleep about seven hours, and take each injection at the time given. Call us the same day for breathlessness, sudden weight gain or severe pain; outside clinic hours, call 108 or go to the nearest emergency department, then call us on +91 89399 94244.

Does a higher dose give more eggs?

No, not beyond what your ovaries can respond to. Response depends mainly on age and egg reserve. With low reserve, collecting eggs over more than one stimulation, such as dual stimulation, usually helps more than a higher dose.

Will stimulation bring my menopause forward?

No. Stimulation matures follicles your ovaries started that month, which would otherwise have been lost. It does not use up eggs meant for later months.

What happens if too few or too many follicles grow?

If too few grow, the cycle may continue with fewer eggs or be stopped and the protocol changed. If too many grow, we lower the dose, use an agonist trigger and freeze all embryos, or for IUI cancel the cycle, to keep you safe.

In their words, not ours.

4.94.9 from 1,210 Google reviewsSee all reviews on Google
Geetha M.
· Google

She prescribes only the very necessary investigations and medications, maintaining high standards and ethics.

Daphne J.
· Google

Dr. Vani mam is incredibly knowledgeable and took the time to explain everything clearly.

Sources (4)
  1. ESHRE: Guideline on Ovarian Stimulation for IVF/ICSI
  2. RCOG: The Management of Ovarian Hyperstimulation Syndrome (Green-top Guideline No. 5)
  3. HFEA (UK fertility regulator): Fertility drugs
  4. HFEA: Elective freeze all cycles

Where to next.

Told to just raise the dose? Ask us why.

A real person from our team replies on WhatsApp, usually within minutes during clinic hours (Mon to Sat, 9am to 5pm. Sunday closed.).

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