# HRT and GLP-1: Can You Take Them Together?

Source: https://www.dietglp.com/blog/hrt-and-glp-1/
Published: 2026-10-24
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**TL;DR:** Yes, HRT and GLP-1 medications are often taken together, and a Mayo Clinic study shown at The Menopause Society meeting in October 2026 found women on hormone therapy lost a bit more weight on semaglutide (11.9% vs 10.9%). The main safety question is the progestogen pill in combined HRT: the British Menopause Society says slower stomach emptying on semaglutide or tirzepatide may lower how much is absorbed, so patches, gels or a hormonal IUD may be preferred. Never change your HRT on your own; ask your prescriber. Meanwhile, [Sharpy](https://apps.apple.com/us/app/glp-diet-app-sharpy/id6762084138) helps you protect muscle during menopause weight loss with one protein target and one 20-minute workout a day.

Can you take HRT and a GLP-1 like Ozempic, Wegovy, Mounjaro or Zepbound at the same time? **Yes. Many women do, and no US label says you cannot.** The main thing to check is the type of HRT you use. GLP-1 drugs slow down your stomach, which may lower how much of an HRT *pill* gets absorbed. Patches, gels and IUDs are not expected to be affected. And this week, new research suggested HRT may even give a small boost to weight loss on semaglutide.

Here is what the new study found, what UK menopause experts advise, and what to ask your doctor.

## The new HRT and GLP-1 study (October 2026)

At The Menopause Society's 2026 Annual Meeting in San Diego (October 20 to 24), a team led by Dr. Regina Castaneda of Mayo Clinic Florida presented a large real-world study. They looked at health records of women aged 45 and older with a BMI of 27 or higher who used semaglutide or tirzepatide for at least 12 months. Women using hormone therapy were matched with similar women who were not.

| | Semaglutide (Wegovy, Ozempic) | Tirzepatide (Zepbound, Mounjaro) |
|---|---|---|
| Women in the study | 2,379 (793 on HT) | 1,476 (492 on HT) |
| Average age and BMI | 57 years, BMI 36 | 57 years, BMI 36 |
| Weight loss at 12 months | 11.0% with HT vs 9.5% without | No significant difference |
| Weight loss at 15 months | 11.6% vs 9.7% | No significant difference |
| Weight loss at last follow-up | 11.9% vs 10.9% | No significant difference |
| Early difference | Significant from 9 months | 6.6% vs 5.9% at 3 months only |
| Lost 20% or more | 22% vs 18% | No significant difference |

So the HRT group did a little better on semaglutide, by about 1 to 2 percentage points. On tirzepatide, the gap showed up early and then faded.

Three important limits:
- **It is an association, not proof.** The study was observational. Women who use HRT may differ in other ways, such as sleep, access to care or activity.
- **It was a meeting abstract.** It has not yet been published as a full peer-reviewed paper.
- **It did not compare HRT types or doses.** We do not know if patches or pills made a difference.

Dr. Castaneda also stressed that weight loss is not a reason to start menopause hormone therapy. HRT is for symptoms like hot flashes, night sweats, sleep problems and vaginal dryness.

## Why the type of HRT matters on a GLP-1

GLP-1 drugs slow how fast food leaves your stomach. That is part of why you feel full. But it can also change how other pills are absorbed.

The clearest data come from birth control pills, not HRT. Lilly found that one 5 mg dose of tirzepatide cut the peak level of a combined birth control pill by 55% to 66% and the total amount by 16% to 23%. Because of this, the Zepbound and Mounjaro labels advise women on oral birth control to switch to a non-oral method, or add a barrier method, for 4 weeks after starting and for 4 weeks after each dose increase. Our guide to [Mounjaro and birth control](/blog/mounjaro-and-birth-control/) covers that in detail.

Semaglutide looks different. Small studies found no meaningful drop in birth control pill levels, and the Ozempic and Wegovy labels have no matching warning.

For HRT, there is **no direct data** for either drug. That is where the British Menopause Society (BMS) stepped in.

## What the British Menopause Society advises (BMS guidelines on HRT and GLP-1)

In April 2025, the BMS published a "Tool for Clinicians" on using semaglutide and tirzepatide in women on HRT. It is the most detailed expert guidance on this question so far. It is written for doctors, but the main points are easy to follow.

| Your HRT type | What the BMS suggests for doctors |
|---|---|
| Estrogen patch, gel or spray | Preferred route on these drugs. Not affected by stomach emptying |
| Estrogen pill | Consider switching to a patch or gel (also lowers clot risk) |
| Combined patch (estrogen + progestogen) | No change |
| Hormonal IUD (52 mg levonorgestrel) | No change. Likely the most complete womb protection |
| Progestogen or progesterone pill | Consider an IUD, or a temporary higher dose around starts and dose increases |
| Vaginal progesterone (off-label in UK) | No change |

Why does the progestogen matter so much? If you still have a uterus, estrogen alone can thicken the lining of the womb. The progestogen part of HRT protects against that. The BMS worry is that a GLP-1 might lower how much of an oral progestogen gets absorbed, and that women with obesity already have a higher risk of womb lining problems.

The BMS is honest that this advice is based on "extrapolation" from birth control data and expert opinion. It says doctors should share that uncertainty with patients.

**What this means for you:** do not change, stop or double any hormone yourself. If you use HRT pills and are starting or increasing a GLP-1, ask your prescriber whether your current HRT still fits. Tell them about any new or unusual vaginal bleeding.

## Can HRT and GLP-1 help with perimenopause weight gain?

Midlife weight gain is common. The BMS notes that the menopause transition adds an average of 2 to 3 kg (about 4 to 7 pounds), mostly around the waist. GLP-1 drugs target appetite and weight. HRT targets symptoms and supports bone. They do different jobs, which is why many doctors see them as a good pair. Our [GLP-1 and menopause guide](/blog/glp1-and-menopause/) walks through the full picture.

One more reason to care about the pairing: bone and muscle. Estrogen loss speeds up bone loss, and fast weight loss can cost both bone and muscle. Read more in our [GLP-1 and bone density guide](/blog/glp1-bone-density/).

This is where your daily habits matter most. [Sharpy](https://apps.apple.com/us/app/glp-diet-app-sharpy/id6762084138) gives you one protein target based on your body, one 20-minute strength workout and a Shape Score, so you can tell if you are losing fat and keeping muscle, not just watching the scale.

## Questions to ask your doctor about HRT and GLP-1

- Is my HRT a pill, patch, gel, spray or IUD, and does that matter with this drug?
- Should my estrogen be a patch or gel instead of a pill?
- How is my womb lining protected, and does that change when I start or raise my dose?
- What bleeding should I report, and how fast?
- Should I check my bone density?

Our list of [questions to ask your doctor about GLP-1](/blog/questions-to-ask-doctor-glp1/) has more.

## Protecting muscle while on both

Women in midlife lose muscle faster, and GLP-1 weight loss can add to that. Two habits help the most. First, eat enough protein; our [protein target guide](/blog/protein-target-on-glp1/) shows how to set your number. Second, lift something two or three times a week; see [strength training for women on GLP-1](/blog/glp1-and-women-strength/).

## The bottom line

HRT and GLP-1 drugs can be taken together. A new Mayo Clinic study suggests women on HRT may lose slightly more weight on semaglutide, but it does not prove cause, and HRT is not a weight loss drug. The real safety point is absorption: if your HRT includes a pill, especially a progestogen, ask your prescriber whether a patch, gel or IUD would suit you better while you take a GLP-1. And to make sure the weight you lose is fat, not muscle, [Sharpy](https://apps.apple.com/us/app/glp-diet-app-sharpy/id6762084138) keeps your protein, workouts and Shape Score in one place.

## Sources

- Patient Care Online, "Menopause Hormone Therapy Linked to Greater Weight Loss With Semaglutide in Real-World Study" (Castaneda et al., The Menopause Society 2026 Annual Meeting): https://www.patientcareonline.com/view/menopause-hormone-therapy-linked-to-greater-weight-loss-with-semaglutide-in-real-world-study
- The Menopause Society release via Medical Xpress, Oct 20, 2026: https://medicalxpress.com/news/2026-10-hormone-therapy-weight-loss-effectiveness.html
- British Menopause Society, "Use of incretin-based therapies in women using hormone replacement therapy (HRT)," April 2025: https://thebms.org.uk/wp-content/uploads/2025/04/23-BMS-TfC-Use-of-incretin-based-therapies-APRIL2025-C.pdf
- Zepbound (tirzepatide) prescribing information, section 7 (oral contraceptives), DailyMed: https://dailymed.nlm.nih.gov/dailymed/search.cfm?query=zepbound
- Wegovy (semaglutide) prescribing information, DailyMed: https://dailymed.nlm.nih.gov/dailymed/search.cfm?query=wegovy


## Frequently asked questions

**Q: Can you take HRT and a GLP-1 together?**

A: Yes. No FDA label lists HRT as a reason not to take Wegovy, Ozempic, Zepbound or Mounjaro, and many women take both. The British Menopause Society says the main point to check is the oral progestogen part of combined HRT, because these drugs slow stomach emptying. Your prescriber can review your HRT type when you start.

**Q: Does HRT help GLP-1 weight loss?**

A: It may help a little. In a Mayo Clinic study of about 3,900 women aged 45 and older, those using hormone therapy lost 11.9% of body weight on semaglutide at last follow-up versus 10.9% without it. With tirzepatide, the difference was only significant at 3 months. The study was observational, so it does not prove HRT caused the extra loss.

**Q: Does Mounjaro affect HRT?**

A: Possibly the oral part. Tirzepatide (Mounjaro, Zepbound) lowered birth control pill levels in Lilly's data, with peak levels down 55% to 66% after one 5 mg dose. HRT was not tested, but the British Menopause Society extrapolates from that data to oral progestogens in HRT. Patches, gels and vaginal estrogen are not expected to be affected.

**Q: Does Ozempic affect HRT?**

A: Less is known. Small studies found semaglutide did not lower birth control pill levels in a meaningful way, and the Ozempic and Wegovy labels carry no contraception warning. The British Menopause Society still treats semaglutide and tirzepatide the same for HRT, because both slow stomach emptying and there is no direct HRT data.

**Q: Should I switch from HRT pills to patches on a GLP-1?**

A: That is a decision for your prescriber. The British Menopause Society says transdermal estrogen (patch, gel or spray) is preferred for women on these drugs, and that a 52 mg levonorgestrel IUD is likely the most complete option for womb protection. Do not stop or change any hormone on your own.

**Q: Is HRT a weight loss treatment?**

A: No. The lead researcher of the Mayo Clinic study said weight loss is not a reason to start menopause hormone therapy. HRT is for menopause symptoms such as hot flashes and night sweats. The new data only suggest that women who already use it may do slightly better on semaglutide.