When you stop taking Myfembree, your body’s own hormone production ramps back up quickly, and the symptoms the medication was controlling tend to return. Ovulation resumes in roughly three and a half weeks on average, and menstrual bleeding typically restarts soon after. Because Myfembree manages symptoms rather than eliminating the underlying condition, the transition off the medication is something worth understanding before it happens.
How Myfembree Keeps Symptoms Suppressed
Myfembree is a combination pill containing three active ingredients: relugolix, estradiol, and norethindrone acetate. The relugolix component does the heavy lifting. It blocks receptors in the brain’s pituitary gland that normally respond to a natural hormone signal, preventing the release of two key reproductive hormones into the bloodstream. Without those hormones, the ovaries dial back their production of estrogen and progesterone substantially.1PubMed Central. Development of relugolix combination therapy as a medical treatment option for women with uterine fibroids or endometriosis Since both uterine fibroids and endometriosis are fueled by estrogen, this hormonal suppression quiets the heavy menstrual bleeding, pelvic pain, and other symptoms these conditions cause.
The other two ingredients, estradiol and norethindrone acetate, are “add-back” therapy. They put a small, controlled amount of hormone back into your system to reduce the side effects of low estrogen, such as hot flashes, vaginal dryness, and bone thinning. This add-back approach is what separates Myfembree from older treatments that drove estrogen to near-zero levels and came with harsher side effects.
Understanding this setup matters because stopping the pill removes all three components simultaneously. Relugolix clears from your body relatively fast, and once it does, the pituitary gland is free to resume its normal signaling. The add-back hormones also stop, but by that point your own ovaries are already spinning back up.
Ovulation and Menstruation Resume Quickly
One of the clearest findings about Myfembree discontinuation is how rapidly your reproductive system reboots. In a study tracking women after they stopped taking the medication, every participant either ovulated or began menstruating again. The average time to return to ovulation was about 23 and a half days.2PubMed. Inhibition of ovulation and pharmacologic mechanism of action of relugolix combination therapy That is essentially one menstrual cycle’s worth of time. Some women resumed even sooner.
This fast rebound is a direct consequence of how relugolix works. Unlike older injectable medications that could suppress the reproductive system for weeks or months after the last dose, relugolix is taken daily by mouth and is cleared relatively quickly once you stop. The pituitary gland picks up where it left off, releasing the hormones that trigger follicle growth and ovulation in the ovaries. For most women, the hormonal environment looks close to its pre-treatment state within a month.
Symptoms Tend to Come Back
This is the part most women are concerned about, and the honest answer is not reassuring: the symptoms Myfembree was managing are likely to return after you stop. Expert reviews of the drug’s clinical data have noted that symptoms will probably resume shortly after treatment ends.3PubMed Central. An evaluation of relugolix/estradiol/norethindrone acetate for the treatment of heavy menstrual bleeding associated with uterine fibroids in premenopausal women For women with fibroids, that means heavy menstrual bleeding can return to pre-treatment levels. For women with endometriosis, pelvic pain, painful periods, and pain during intercourse can resurface.
The timeline for symptom return varies, but it generally tracks with the return of menstruation. Once your period resumes and your estrogen levels climb back to their normal range, the hormonal environment that was driving your symptoms is restored. Fibroids remain estrogen-sensitive tissue, and endometrial implants are still present and capable of causing inflammation and pain. Myfembree was suppressing the fuel, not removing the fire.
How severe the returning symptoms are can differ from person to person. Some women report that symptoms come back gradually over a few cycles, while others feel a more abrupt return. There is no reliable evidence that Myfembree use creates any lasting reduction in symptom severity once the drug is fully cleared. The disease itself has not changed during treatment, only its expression was dampened.
The Underlying Condition Has Not Gone Away
A common misconception is that Myfembree might shrink fibroids or clear endometriosis implants enough that symptoms stay improved after stopping. In reality, the medication is a symptom-management tool. Fibroids may reduce in size somewhat during treatment because they are estrogen-dependent, but they do not disappear. Once estrogen levels return, fibroids typically regain volume. For endometriosis, the inflammatory tissue lesions remain in place throughout treatment. They become less active during suppression but reactivate once hormones normalize.
This is an important distinction because it shapes what stopping actually means in practical terms. You are not “cured” by a course of Myfembree. Instead, you’ve been given a window of symptom relief. That window may be used strategically: for example, to reduce heavy bleeding and improve anemia before a planned surgery, or to manage symptoms while you and your doctor decide on a longer-term approach. But the expectation should be that stopping the medication returns you roughly to where you started, symptom-wise.
Bone Health and the 24-Month Treatment Window
One of the reasons Myfembree has a built-in time limit is bone health. Even with the add-back estradiol and norethindrone acetate partially protecting bone density, long-term suppression of your natural estrogen still carries some risk of thinning bones. Clinical data show that treatment for up to two years did not cause clinically meaningful bone loss in most women.4Drugs. Relugolix/Estradiol/Norethisterone (Norethindrone) Acetate: A Review in Symptomatic Uterine Fibroids That “most women” caveat matters: a minority did experience measurable changes, and extending treatment beyond two years pushes into territory where the data are thinner and the risk-benefit balance shifts.
When you stop Myfembree, the bone-density concern essentially pauses. Your natural estrogen production returns, and estrogen is one of the primary hormones that maintains bone density in premenopausal women. For most women who stayed within the recommended treatment duration, any small bone-density changes are expected to stabilize or improve once the medication is stopped. If you took the drug for a full two years and your doctor monitored your bone density with a DEXA scan, you likely have a clear picture of where things stand at discontinuation.
For women with additional risk factors for osteoporosis, such as a family history, low body weight, smoking, or long-term corticosteroid use, bone health may be a more pressing concern both during and after treatment. These conversations should happen before starting Myfembree, not as an afterthought when stopping.
Getting Pregnant After Stopping
The rapid return to ovulation means that pregnancy is possible very soon after discontinuation. With ovulation returning on average within about three and a half weeks, some women could conceive within the first cycle off the medication.2PubMed. Inhibition of ovulation and pharmacologic mechanism of action of relugolix combination therapy If you are stopping Myfembree specifically because you want to get pregnant, this is encouraging news. The drug does not appear to create a prolonged delay in fertility the way some older hormonal treatments could.
If pregnancy is not your goal, the flip side of that fast rebound is that you need contraception in place essentially immediately. Myfembree itself suppresses ovulation while you take it, but the moment you stop, that protection vanishes quickly. Your doctor may recommend starting a contraceptive method before or at the same time you discontinue, especially if you are switching to a treatment that does not suppress ovulation.
For women who have fibroids and want to become pregnant, timing the discontinuation strategically with a fertility specialist can make sense. Some women use Myfembree to control bleeding and improve iron levels before attempting conception, then stop the medication and try to conceive in the window before symptoms fully return.
Transitioning to Another Treatment
Stopping Myfembree rarely means stopping all treatment. Because symptoms return, most women move to an alternative management strategy rather than simply going untreated. The options generally fall into a few categories.
Surgical approaches include myomectomy (removing fibroids while preserving the uterus), uterine artery embolization (cutting off blood supply to fibroids), endometrial ablation, or hysterectomy. For endometriosis, laparoscopic excision of lesions is a surgical option. Some women use Myfembree as a bridge to surgery, managing symptoms while waiting for a procedure date or optimizing their health beforehand.
Other hormonal medications are another route. Research on adolescents and young women with endometriosis who stopped GnRH-based treatments found that roughly half continued with similar hormonal suppression, while others switched to different hormonal options like progestin-only pills or combined oral contraceptives. About a quarter returned to a treatment they had tried before.5Journal of Pediatric and Adolescent Gynecology. Treatment of Adolescent Endometriosis Before, During, and After Use of Gonadotropin-Releasing Hormone Agonists: A Retrospective Cohort Study That study involved GnRH agonists rather than the antagonist in Myfembree, and the patients were younger, but the general pattern is instructive: most people with these conditions need ongoing management, and the specific medication may change over time as symptoms, side effects, and life circumstances evolve.
For some women approaching menopause, the calculation is different. If natural menopause is expected within a few years, the goal may be to manage symptoms just long enough for the body’s own estrogen decline to accomplish what the medication was doing. In those cases, stopping Myfembree after the maximum treatment duration and switching to a lighter hormonal option or even watchful waiting may be reasonable.
What the First Few Weeks Off Feel Like
The lived experience of stopping Myfembree is not well-documented in clinical trials, which tend to focus on measurable outcomes rather than day-to-day quality of life during the transition. But based on how the drug works, a few things are predictable.
In the first one to two weeks, your body is still in a suppressed state. You may not notice much change right away. By weeks three and four, hormonal activity is picking back up. Some women experience spotting or irregular bleeding as their cycle tries to re-establish itself. The first full period after stopping may be lighter than your pre-treatment periods, heavier, or about the same. It often takes two to three cycles for bleeding patterns to settle into whatever your new normal will be.
Hot flashes and night sweats, which Myfembree’s add-back therapy was helping to prevent, should not worsen after stopping. If anything, they should improve as your body’s own estrogen production resumes. This is the opposite of what happens when postmenopausal women stop hormone replacement therapy, where hot flashes commonly return because there is no natural estrogen production to take over.
Mood changes during the transition are harder to predict. Hormonal fluctuations affect mood in some women more than others, and the shift from a suppressed hormonal state back to a cycling one involves real biochemical changes. If you are prone to mood shifts around your period, the weeks of hormonal re-establishment could feel bumpy. Keeping your doctor informed about how you feel during this window is worthwhile, especially if you have a history of anxiety or depression.
When Myfembree Is Stopped Early
Not everyone completes a full course. Some women stop Myfembree before the 24-month limit because of side effects, insurance issues, a decision to pursue surgery, or a desire to become pregnant. In these cases, the same general principles apply: hormones rebound quickly, ovulation returns within weeks, and symptoms are likely to come back. There is no evidence that stopping early creates additional risks compared to completing a longer course. The drug does not need to be tapered; you simply stop taking it.
The most common reasons for early discontinuation in clinical practice tend to be side effects (headaches, nausea, irregular bleeding) and cost. Myfembree is expensive, and insurance coverage can be inconsistent. If cost is the reason you are stopping, discussing alternatives with your doctor before your supply runs out gives you the best chance of a smooth transition rather than an abrupt gap in symptom management.
How GnRH Antagonists Differ from Older Treatments in Discontinuation
If you have previously used a GnRH agonist like leuprolide (Lupron), the discontinuation experience with Myfembree is noticeably different. Older GnRH agonists work by initially overstimulating the pituitary before eventually shutting it down, and they are typically given as monthly or multi-month injections. The hormonal suppression from a single injection can persist for weeks after the last dose, and the recovery curve is slower and less predictable.
GnRH antagonists like relugolix block the receptor directly and immediately, without that initial overstimulation phase.6PubMed Central. Oral Gonadotropin-Releasing Hormone Antagonists in the Treatment of Endometriosis: Advances in Research Because relugolix is taken daily as a pill and cleared relatively quickly, the suppression lifts faster once you stop. This is generally considered an advantage: the rapid and predictable reversibility means you have more control over the timing of your hormonal return. For women planning pregnancy or surgery at a specific time, that predictability is valuable.
The trade-off is that the faster reversibility also means symptom return happens sooner. With an injectable GnRH agonist, there might be a longer buffer of suppression after the last dose. With Myfembree, the clock starts ticking almost immediately.
Monitoring After Discontinuation
Your doctor will likely want to see you within a few months of stopping Myfembree to assess how your symptoms are evolving and whether your menstrual cycle has normalized. If you were being treated for fibroids, an ultrasound can show whether fibroid size has changed since treatment ended. If you were being treated for endometriosis, the assessment is more symptom-based, since imaging does not reliably capture all endometriotic lesions.
Blood work may be useful, particularly a complete blood count if heavy menstrual bleeding was your primary symptom. Women with fibroids often develop iron-deficiency anemia from chronic heavy periods, and one of the benefits of Myfembree is that it allows hemoglobin and iron stores to recover during treatment. Once heavy bleeding returns, anemia can redevelop over several cycles. Catching it early with a blood test lets you start iron supplementation before it becomes severe.
If you had a DEXA scan during treatment to monitor bone density, a follow-up scan six to twelve months after stopping can confirm that bone density has stabilized or improved. For most women who used Myfembree within the approved timeframe, this scan is reassuring rather than alarming, but it provides a useful baseline if you ever consider re-treatment or another medication that affects bone health.