Menopur (also known as human menopausal gonadotropin) is one of the key medications used in an in vitro fertilization cycle.
In this post, you will learn:
- What Menopur does in IVF and how it works
- How to take this injectable medication
- Side effects you can expect from using it
Let’s get started.
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What is Menopur?
Menopur is a gonadotropin medication used for fertility treatments. It contains two hormones that are naturally produced by your pituitary gland- follicle-stimulating factor (FSH) and luteinizing hormone (LH).
These hormones help your ovaries produce a mature egg (inside of a follicle) and stimulate estrogen production.
What does Menopur do during IVF?
Menopur works by stimulating your ovaries to produce multiple follicles during an IVF cycle.
Your body will secrete just enough FSH and LH to produce just one follicle in a natural cycle.
In contrast, Menopur delivers these hormones directly to your body at a much higher dose than what naturally occurs.
As such, Menopur (in conjunction with another gonadotropin medication) will stimulate the production of multiple follicles and potentially many mature eggs.
How is Menopur used?
Menopur comes in powder form and must be mixed and dissolved with sterile saline before you inject it.
You do this by injecting 1 mL of sterile saline into the vial containing the Menopur powder. Then gently rotate the vial between your fingers for a few seconds until all particles have dissolved.
It is important not to shake the vial.
If you are using more than one vial, this dissolved solution can then be introduced into the next Menopur vial and the process repeated. For more detailed instructions, see this video.
You will then inject yourself with the Menopur solution with a subcutaneous needle once a day, usually in the stomach/ abdominal region.
Menopur is often used in an IVF cycle in conjunction with another gonadotropin medication (Gonal-F or Follistim).
How much Menopur is needed for IVF?
The dose of Menopur needed in IVF depends on your age, body weight, AMH level, and how many follicles you are expected to develop during treatment.
The typical daily dose ranges from 75 IU (1 vial) to 300 IU per day (4 vials).
In general, the lower your ovarian reserve (low AMH), the higher your initial dose of Menopur will be.
As such, many reproductive endocrinologists argue that there is no benefit in exceeding 150 IU of Menopur per day (2 vials) if you are already using 300 IU of FSH.
How long do you take Menopur for IVF?
Typically, you will take Menopur every day during an IVF stimulation cycle until your follicles are ready to be retrieved.
Based on the speed at which your follicles grow, it is typical to take Menopur for about 8-12 days (the length of an IVF cycle).
What is the best time to take Menopur?
The exact time you take Menopur isn’t as critical as the frequency in which you take it. In general, we recommend you take it at night, every 24 hours, starting on day two or three of your menstrual cycle.
You must pick a convenient time for you so that you can inject around the same time every day.
If you are late on a dose (about 30-60 min), it is usually okay to inject the missed amount as soon as you remember and carry on with your usual schedule.
Be sure to speak with your fertility clinic for specific guidance if you completely miss a dose or inject the wrong amount.
Do you need Menopur for IVF?
Menopur is the only medication that provides LH during an IVF treatment cycle.
However, it is not absolutely essential.
Some IVF patients do well with FSH injections only (Gonal F or Follistim). In these cases, the dose of FSH used is higher than a standard dual gonadotropin approach, usually ~450 IU of FSH.
What are Menopur side effects I should be aware of?
Possible side effects you may experience with Menopur include:
- Abdominal pain and cramping
- Breast tenderness
- Pain at the injection site
- Redness and swelling at the injection site
The good news is, these common side effects are short-lived and improve quickly after discontinuation.
In rare cases, Menopur can increase the risk of ovarian hyperstimulation syndrome (OHSS). This condition is related to how strong of an ovarian response you develop during the treatment.
Symptoms of OHSS include abdominal distention, bloating, pain, shortness of breath, and rapid weight gain.
The use of a Lupron trigger can significantly decrease the risk of OHSS.
Another serious (albeit rare) complication of the use of fertility drugs is ovarian torsion.
How long does Menopur stay in your system?
The half-life of menotropins is 11-13 hours.
This means that after ~12 hours, there is only 50% of the circulating medication still left in your system. After 24 hours, there is half of that left, so 25%.
After 36 hours, 12.5% remains, and so on.
Other Related Questions
Does Menopur help follicles grow?
Yes, the goal of all gonadotropin injections is to induce follicle growth. Depending on the dose used, you may have multiple ovarian follicles growing simultaneously in response to the Menopur.
What is the difference between Gonal F and Menopur?
Gonal-F is a gonadotropin medication composed of FSH only. Menopur is a combination of both FSH and LH.
Both are used in infertility treatment to induce follicle development.
Is Menopur good for egg quality?
It is unlikely that Menopur affects egg quality. Unfortunately, egg quality may be genetically determined, and we don’t have any proven strategies to improve egg quality.
Does Menopur increase the chances of pregnancy?
If used as part of an IVF cycle to yield multiple follicles, ovarian stimulation with gonadotropins can increase the chance of pregnancy compared to no treatment.
However, a high egg yield does not guarantee a pregnancy. Similarly, gonadotropin injections do not guarantee a high number of eggs either.
Success rates are always determined by the entire picture.
How much does Menopur cost?
At the time of the writing, 75 IU of Menopur (1 vial of powder) costs between $197-261. Prices are always subject to change.
Menopur is a stimulation medication used in the IVF process to provide the hormones necessary for inducing ovarian follicular growth.
You will take your IVF stimulation medications for about 8-12 days, and you can expect mild to moderate side effects throughout the length of treatment.
However, these side effects should slowly improve after stopping the medication.
If you have any other questions about your IVF journey, check out my other resources below!
Alex Robles, MD
Alex Robles is a Spanish-speaking Latino-American Reproductive Endocrinologist and Infertility specialist in New York City, and board-certified OBGYN in his final year of fellowship at Columbia University Medical College. He has a special interest in exercise, lifestyle, & nutrition.
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- Keye WR, Webster B, Dickey R, Somkuti S, Crain J, Scobey MJ. Subcutaneously administered Menopur, a new highly purified human menopausal gonadotropin, causes significantly fewer injection site reactions than Repronex in subjects undergoing in vitro fertilization. Reprod Biol Endocrinol. 2005;3:62. Published 2005 Nov 9. doi:10.1186/1477-7827-3-62