Ovulation Induction

What is Ovulation Induction?

Ovulation induction is a targeted fertility treatment applied to women with ovulatory disorders or complete absence of ovulation. Its purpose is to stimulate the ovaries to produce and release mature eggs, thereby increasing the chances of natural conception or success in assisted reproduction techniques such as intrauterine insemination (IUI).

The treatment involves the administration of medications, either oral agents such as Letrozole or Clomiphene, or injectable hormones such as gonadotropins, aiming to regulate hormonal function and promote the development of 1 to 3 follicles. At FertUlity, we design personalized ovulation induction protocols based on each woman’s needs and hormonal profile, with a strong focus on safety, ultrasound monitoring, and achieving the best possible outcome.

Who is Ovulation Induction suitable for?

Ovulation induction is primarily recommended for women who do not ovulate at all or experience irregular ovarian cycles due to hormonal disorders, such as polycystic ovary syndrome (PCOS) or hypogonadotropic hypogonadism.

It is also applied in women with normal ovulation when the goal is to increase the chances of conception through timed intercourse or intrauterine insemination (IUI), especially when time is a limiting factor for the couple. Essential prerequisites for this fertility treatment include patent fallopian tubes and the absence of other underlying causes of infertility.

Treatment Steps & Cycle Monitoring

Ovulation induction at FertUlity follows a clear, structured process tailored to each woman’s hormonal profile and individual needs.

Step 1 Day 1 of cycle

The patient contacts our team as soon as her period starts (full flow, not spotting) to schedule an appointment for ultrasound and blood tests the next day.

Step 2 Day 2

An ultrasound scan and hormonal testing are performed to confirm that the appropriate conditions are in place to begin treatment.

Step 3 Starting medication

Depending on the treatment plan, fertility medication begins with letrozole or clomiphene, or injectable gonadotropins (administered under the guidance of a specialized fertility nurse).

Step 4 Days 7–14

Close monitoring with 2–4 ultrasounds and blood tests to assess follicle growth and endometrial quality.

Step 5 Ovulation trigger

When the follicles reach the ideal size, human chorionic gonadotropin (hCG) is administered (e.g. Ovitrelle) to induce final oocyte maturation.

Step 6Timed intercourse

Approximately 18–36 hours after the injection is the optimal time for sexual intercourse or intrauterine insemination (IUI), under medical guidance. After confirming ovulation, luteal phase support may be added with progesterone supplementation, if necessary (e.g. in cases of luteal phase deficiency).

Step 7 Pregnancy test

If menstruation does not occur within 14 days, a blood test measuring β-hCG is scheduled to confirm pregnancy.

At FertUlity, every step is carried out with scientific precision, continuous monitoring, and a compassionate approach to ensure the best possible conditions for conception.

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Medication Protocols

Success in ovulation induction depends heavily on selecting the right medication protocol. At Fertulity, we personalize this based on the woman’s history, hormonal status, and ovarian response. The three main medication types used in ovulation induction—clomiphene, letrozole, and gonadotropins—differ in their mechanisms, dosages, and effectiveness. The choice is always guided by safety, the prevention of overstimulation, and the goal of achieving pregnancy efficiently.

Letrozole

Letrozole is considered a first-line treatment in ovulation induction. It works by reducing estrogen levels, thereby stimulating the production of FSH. It is commonly used in women with polycystic ovary syndrome (PCOS). It is administered from day 2 to day 6 of the menstrual cycle, typically in doses ranging from 2.5 to 7.5 mg daily. Compared to clomiphene, it has a lower impact on the endometrium and often leads to ovulation with a more physiological number of follicles.

At FertUlity, letrozole is a key therapeutic tool, especially in women who are resistant to other treatments or at high risk of ovarian hyperstimulation.

Gonadotropins (Hypothalamic Amenorrhea or Resistant PCOS)

Gonadotropins are injectable medications containing either pure FSH or a combination of FSH and LH (hMG), and are typically used in more complex cases or when greater precision is required in controlling the number and quality of developing follicles. Administration usually begins on day 2 or 3 of the cycle and continues with daily or alternate-day injections, under close monitoring with ultrasound scans and hormonal testing.

Gonadotropins offer higher success rates but require greater clinical expertise and precision in management. At FertUlity, gonadotropin cycles are conducted under strict medical supervision to ensure maximum effectiveness and safety.

Clomiphene

Clomiphene is an oral medication, ideal for women with mild ovulatory disorders or polycystic ovary syndrome (PCOS). It is usually administered from day 2 to day 6 of the menstrual cycle, in doses ranging from 50 to 150 mg daily. It stimulates the production of FSH and LH, hormones that promote follicular development and maturation.

Clomiphene is easy to administer, cost-effective, and associated with mild side effects, while in many cycles it can successfully lead to natural ovulation. At FertUlity, we closely monitor patient response to adjust dosage accordingly and minimize potential side effects.

Success Rates, Risks & Side Effects

Ovulation induction is a widely used and well-documented treatment with good success rates. However, like any medical approach, it carries potential risks and side effects. At FertUlity, we manage these responsibly with continuous monitoring.

Ovulation & Pregnancy Success Rates

Success rates vary depending on the underlying cause of infertility, the woman’s age, and the medication protocol used. In cycles using clomiphene or letrozole, the likelihood of achieving ovulation can reach up to 80%, while in gonadotropin cycles it may exceed 90%.

The probability of pregnancy per cycle typically ranges between 15% and 25%, a rate that can increase when ovulation induction is combined with intrauterine insemination (IUI). At FertUlity, each cycle is closely monitored to ensure maximum response with safety and precision.

Lab specialist carefully handles embryo in petri dish under blue light, ensuring precision during ivf laboratory procedures.

Potential Risks & Side Effects

Ovulation induction is generally safe; however, some side effects may occur. The most common complication is multiple pregnancy (twins or triplets), particularly in cycles with a high ovarian response. In rare cases, ovarian hyperstimulation syndrome (OHSS) may develop, causing ovarian enlargement and discomfort, requiring medical management.

Mild side effects may include headaches, breast tenderness, mood changes, or bloating. At FertUlity, risks are minimized through low starting doses and a personalized approach, based on continuous ultrasound monitoring and hormonal assessment at every stage of treatment.

Pregnant woman and partner share a tender moment, hand on belly, celebrating their ivf conception success together.

Frequently Asked Questions About Ovulation Induction

What is ovulation induction and when is it used?

Ovulation induction is a medical fertility treatment that helps women with irregular or absent menstrual cycles to release mature eggs. It is indicated in conditions such as polycystic ovary syndrome (PCOS), hypothalamic amenorrhea, or unexplained infertility.

How long does an ovulation induction cycle last?

The duration varies depending on ovarian response, but generally lasts 8–16 days. It begins early in the cycle and includes frequent exams until ovulation is triggered.

Are there side effects from ovulation induction medications?

Yes, mild side effects like bloating, headaches, breast tenderness, or mood swings may occur. In rare cases, ovarian hyperstimulation (OHSS) can develop and requires medical follow-up.

How many ovulation induction cycles can I try?

The treatment can be repeated for several cycles, usually up to 4–6. If pregnancy is not achieved, other treatments such as IVF may be considered.

Is there a higher chance of twins with ovulation induction?

Yes, medication may increase the likelihood of multiple pregnancies, especially if more than one follicle matures. At FertUlity, we aim for controlled responses to minimize this risk.

Our Doctors

In an era where fertility requires knowledge, care, and substantial guidance, FertUlity is not an impersonal clinic. It is two people who look you in the eye and accompany you step by step on the journey you dream of.

Dr. Chrysostomos (Makis) Papadopoulos Obstetrician – Gynecologist, MD, PhDc, MIC I

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Dr. Chrysostomos Papadopoulos - Specialist in Infertility, Endocrinology & Menopause in Athens

Dr. Maria Oikonomou Obstetrician – Gynecologist

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The First Step Starts Now

You don’t need to have all the answers to begin.
All it takes is one first step, and a team that truly listens.

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FertulityThrough the Words of our Parents

100% genuine, public Google reviews.
Because every fertility journey begins with honesty and trust.

      EXCELLENT  
   Based on 12 reviews 
    
 
 
 
   
 
 
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   Μαρια 
 26 days ago
 
 
  The word "thank you" to Dr. Makis Papadopoulos is too small to describe the gratitude we feel for this man. I am pregnant after IVF, having succeeded on the first attempt, and we owe this exclusively to our doctor. First Contact & Communication: From the very first contact, he won us over with his kindness, enthusiasm and willingness to dedicate as much time as we needed. Willing to explain everything in every detail, he solved every question we had in depth — not even a professor to students would analyze them with such patience and contagiousness! Scientific Training: He is an excellent scientist, with deep knowledge of the subject, a perfectionist and focused professional who leaves absolutely nothing to chance. He designed the right treatment for us, solving every problem down to the last detail, making us feel that whatever problem arises, it is certain that it will be solved. HUMANITY & SUPPORT: The most important thing, however, is his humanity. Communication with him was Immediate and he always had as much time as you needed on the phone to solve every question. He showed a deep, real interest, embracing us not just as a doctor, but as if he were our brother. We highly recommend him to every couple starting this journey. He deserves blind trust! We thank you from the bottom of our hearts for the greatest miracle of our lives!

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   Alexandra 
 52 days ago
 
 
  I don't often write reviews, but I feel that Mr. Makis truly deserves it. From the very first moment, he made me feel safe and confident. He listened carefully to what was on my mind, answered every question I had, and explained everything in a simple way, always based on scientific data. Many times, he even sent me relevant scientific studies so that I could better understand why he was suggesting a particular approach. But what stood out to me the most was that he didn't stop at the appointment. He followed up, was genuinely interested in my progress, and was available when I needed him. This is something you rarely encounter. Fortunately, he returned to Greece. He is one of the few doctors who, beyond their knowledge, remain above all human beings. He makes you feel like he sees you as a person and not as just another incident.

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   Matina 
 69 days ago
 
 
  A big thank you to Dr. Makis Papadopoulos who supported us from day one, who checked every little detail, who explained to us every move-step, every test, every medication for the reason we were doing it and what we would achieve. With incredible experience, knowledge, a lot of patience (because we had two other failed attempts with another doctor) and trust, within 8 months he adapted the protocols for our case and we achieved the positive result and we hold in our arms a priceless diamond. Above all, a rare person, calm and always available to listen to our concerns and reassure us. I highly recommend him!

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   Eva 
 93 days ago
 
 
  Thanks to Dr Makis Papadopoulos, I am now holding my two beautiful babies in my arms! He is a true expert. Professional with a human centric approach, friendly and empathetic, always available to answer our (many many) questions. I trust Dr Makis blindly and, honestly, I cannot recommend him enough!
  
 
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   Ivy 
 100 days ago
 
 
  My experience with Dr. Makis took me from a clinical stagnation to an incredible breakthrough, highly recommend Dr. Makis! Navigating the exhausting world of IVF, you know how devastating it is to watch your protocol dosages go up while your results go down. After three intense, high-dosage cycles with a previous clinic, I was left feeling incredibly discouraged. Despite escalating medications and growth hormones, my blastocyst yield was dwindling, culminating in a heartbreaking round with zero blastocysts. I knew I needed a doctor who didn't just follow a standard script, but who truly understood the nuances of egg quality and customized protocols. That is when I found Dr. Makis. Dr. Makis completely revolutionized my treatment plan. Instead of just pushing maximum dosages, he took a highly strategic, tailored approach. The result? Quality over pure protocol size. While my previous doctors kept increasing the medication dosages (which yielded fewer or zero blastocysts), Dr. Makis completely changed the strategy. He lowered the heavy stimulation, introduced smart egg-quality support (like melatonin), changed the protocol style entirely, and achieved a 700% increase in blastocysts compared to my best previous rounds. Beyond the incredible results, Dr. Makis brings a level of expertise, precision, and reassuring care that is rare to find. He looks at you as an individual, not a statistic, and knows exactly how to pivot when traditional routes fail. If you are looking for a specialist who can turn a difficult prognosis into an overwhelming success, look no further than Dr. Makis. I am incredibly grateful for his care.
  
 
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   Olga 
 111 days ago
 
 
  Dr. Makis Papadopoulos was excellent, professional, and very reassuring throughout the entire process. Thanks to his expertise and guidance, we were able to identify the issue early and take the appropriate steps from the beginning. He took the time to explain everything clearly, answered all our questions with patience, and made us feel comfortable and confident throughout our journey. We truly appreciated his caring approach, professionalism, and dedication. Highly recommended!
  
 
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   Euaggelia 
 122 days ago
 
 
  Dr. Makis Papadopoulos is an excellent scientist and above all a rare person! He is an approachable and smiling doctor, with excellent medical knowledge, who from the first moment I met him made me feel comfortable and trust him completely, answering every question I had with patience and documenting every answer with scientific studies and articles! The most important thing, however, is that Dr. Makis Papadopoulos is always there on the other end of the line to listen to you and reassure you without a trace of haste, a doctor who truly cares and makes you feel like he is your own person! Makis, thank you very much for everything!!! I am very lucky to have met you!

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   Anastasia 
 129 days ago
 
 
  Dr. Makis Papadopoulos is an excellent scientist with a human-centered interest. Our collaboration was excellent from the very beginning and he made me feel confident and secure by explaining every step of the process in great detail. I highly recommend him!

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   Fay 
 131 days ago
 
 
  Dr Makis Papadopoulos is very professional, caring and attentive. Very thorough in explaining the whole process throughout every step. Thank you! Highly recommended!!
  
 
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   Christina 
 134 days ago
 
 
  I would like to share my experience with Dr. Makis Papadopoulos, an outstanding gynecologist and scientist. We first connected in the summer of 2024, while he was based in Germany, through a mutual acquaintance, following a particularly challenging period for us. Prior to meeting him, we had gone through repeated unsuccessful attempts of stimulation and fertilization with other gynecologists. Unfortunately, those approaches relied largely on standardized protocols, without sufficient personalization to address the specific needs of my case. From the very beginning, Dr. Makis stood out for his human-centered approach and his willingness to dedicate time to truly understand our situation in depth. With strong, up-to-date scientific knowledge, he approaches every case holistically, focusing on individualized treatment and adapting protocols to the patient's unique needs. Throughout our collaboration, which now spans approximately two years (with a few breaks on our side), he has consistently been available, supportive, and clear in his guidance. He inspired confidence and helped us stay positive even during difficult phases of the journey. Beyond his scientific expertise, what truly sets him apart is his genuine care for the person behind each case: his empathy, honesty, and continuous effort to achieve the best possible outcome. My husband and I are deeply grateful for his support and guidance, and we now feel ready and optimistic to move forward to the next final stage. We highly recommend him to anyone seeking a gynecologist with true expertise, professionalism, and compassion. I would like to share my experience with Dr. Makis Papadopoulos, an excellent gynecologist and scientist. We met in the summer of 2024, when he was in Germany, through a mutual acquaintance, after a particularly demanding period for us. Before meeting him, we had gone through repeated failed attempts at stimulation and fertilization with other gynecologists. Unfortunately, the approaches that had been followed were mainly based on standardized protocols, without the necessary individualization to the specifics of my case. From the beginning, Dr. Makis stood out for his human approach and his willingness to spend time to understand our case in depth. With modern knowledge and scientific training, he approaches each issue multidimensionally, emphasizing the individualization of treatment and adapting the protocols to the real needs of the patient. During our collaboration, which now spans about two years (with short breaks on our part), he was always available, supportive and clear in his guidance. He inspired confidence in us and helped us remain optimistic even in difficult phases. In addition to his scientific competence, what sets him apart is his genuine interest in the person behind each case: his empathy, his honesty and his constant effort to achieve the best possible outcome. My husband and I thank him warmly for his support and guidance and we now feel ready and optimistic to move on to the next final stage. We highly recommend him to anyone looking for a gynecologist with real knowledge, professionalism and humanity.

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   Faidra 
 135 days ago
 
 
  Dr. Makis Papadopoulos is an excellent gynecologist and above all an excellent person! I truly thank him for his support and care during the egg freezing process. Although my case was particularly demanding, he stood by me with patience, knowledge, great experience and real interest. Our communication was direct and human, while his availability at the many appointments made me feel safe at every step. The protocols were designed specifically for me, aiming for the best possible result, while also taking into account the cost of the medications. I recommend him with all my heart to every woman who wants to trust someone for something so important and sensitive for her.

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   Iliana 
 137 days ago
 
 
  I highly recommend Dr. Makis, he is an incredible specialist. My journey was far from easy, encountering several challenges that  made the process feel overwhelming at times. What sets him apart is his willingness to go beyond standard procedures. He developed a specialized, custom protocol, tailored to my situation, which ultimately made all the difference. Beyond his technical expertise, his calm and clear communication kept me grounded throughout the process. I am so grateful for his persistence and high level of care!

Why choose FertUlity?

Because every fertility journey deserves the right support. At FertUlity, we provide science-based fertility care with a human approach. We support every path, from fertility assessment and preservation to modern assisted reproduction.

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