Last checked November 2026 against 12 sources · Editorial policy
CombiPatch vs Climara Pro: combination HRT patches compared
A combination HRT patch delivers estrogen and a progestogen through the skin, for women who still have a uterus. The US has two: Climara Pro (estradiol plus levonorgestrel), changed once a week, and CombiPatch (estradiol plus norethindrone acetate), changed twice a week. On October 20, 2026 the FDA announced the first generic of Climara Pro, made by Zydus. CombiPatch has no generic.
Climara Pro and CombiPatch put estrogen and a progestogen in one patch. Schedule, bleeding, side effects, cost and the first generic Climara Pro, approved October 2026.
CombiPatch vs Climara Pro side by side
| Climara Pro (estradiol and levonorgestrel) | CombiPatch (estradiol and norethindrone acetate) | |
|---|---|---|
| Hormones per day | 0.045 mg estradiol and 0.015 mg levonorgestrel. | 0.05 mg estradiol with 0.14 mg or 0.25 mg norethindrone acetate. |
| How often you change it | Once a week. | Twice a week, every 3 to 4 days. |
| How it's used | Continuously, every week of the month. | Continuously, or for 14 days of a 28-day cycle after 14 days of an estradiol-only patch. |
| Where it goes | Lower abdomen or upper buttock. | Lower abdomen only, away from the waistline. |
| Patch size | 22 cm². | 9 cm² or 16 cm². |
| Storage | Room temperature, 68°F to 77°F. | Refrigerator, 36°F to 46°F, in the sealed pouch. |
| Endometrial hyperplasia at 1 year | 0 of 102 women, vs 17.3% on estradiol alone. | Under 1% on 0.05/0.14 mg, vs 38% on an estradiol-only patch. |
| Skin reaction where it sits, 1-year trial | 40.6%. | 20% on 0.05/0.14 mg. |
| Generic | First generic from Zydus approved October 2026; launch date not announced. | None; brand only. |
| Cash price, 4 weeks | Around $251.82 for 4 patches. | Around $267.81 for 8 patches. |
| Savings card | Up to $75 off for cash payers; as little as $25 with commercial insurance. | $75 off each prescription for cash payers, up to 12 a year. |
Hormones per day
- Climara Pro (estradiol and levonorgestrel)
- 0.045 mg estradiol and 0.015 mg levonorgestrel.
- CombiPatch (estradiol and norethindrone acetate)
- 0.05 mg estradiol with 0.14 mg or 0.25 mg norethindrone acetate.
How often you change it
- Climara Pro (estradiol and levonorgestrel)
- Once a week.
- CombiPatch (estradiol and norethindrone acetate)
- Twice a week, every 3 to 4 days.
How it's used
- Climara Pro (estradiol and levonorgestrel)
- Continuously, every week of the month.
- CombiPatch (estradiol and norethindrone acetate)
- Continuously, or for 14 days of a 28-day cycle after 14 days of an estradiol-only patch.
Where it goes
- Climara Pro (estradiol and levonorgestrel)
- Lower abdomen or upper buttock.
- CombiPatch (estradiol and norethindrone acetate)
- Lower abdomen only, away from the waistline.
Patch size
- Climara Pro (estradiol and levonorgestrel)
- 22 cm².
- CombiPatch (estradiol and norethindrone acetate)
- 9 cm² or 16 cm².
Storage
- Climara Pro (estradiol and levonorgestrel)
- Room temperature, 68°F to 77°F.
- CombiPatch (estradiol and norethindrone acetate)
- Refrigerator, 36°F to 46°F, in the sealed pouch.
Endometrial hyperplasia at 1 year
- Climara Pro (estradiol and levonorgestrel)
- 0 of 102 women, vs 17.3% on estradiol alone.
- CombiPatch (estradiol and norethindrone acetate)
- Under 1% on 0.05/0.14 mg, vs 38% on an estradiol-only patch.
Skin reaction where it sits, 1-year trial
- Climara Pro (estradiol and levonorgestrel)
- 40.6%.
- CombiPatch (estradiol and norethindrone acetate)
- 20% on 0.05/0.14 mg.
Generic
- Climara Pro (estradiol and levonorgestrel)
- First generic from Zydus approved October 2026; launch date not announced.
- CombiPatch (estradiol and norethindrone acetate)
- None; brand only.
Cash price, 4 weeks
- Climara Pro (estradiol and levonorgestrel)
- Around $251.82 for 4 patches.
- CombiPatch (estradiol and norethindrone acetate)
- Around $267.81 for 8 patches.
Savings card
- Climara Pro (estradiol and levonorgestrel)
- Up to $75 off for cash payers; as little as $25 with commercial insurance.
- CombiPatch (estradiol and norethindrone acetate)
- $75 off each prescription for cash payers, up to 12 a year.
Combination HRT patches: expectation vs reality
What people often expect
“Any estrogen patch will do, and the progestogen is an optional extra”
What the evidence shows
If you have a uterus, estrogen alone can thicken its lining and raise the risk of endometrial cancer. In the Climara Pro trial, 17.3% of women on estradiol alone developed hyperplasia within a year, and none on Climara Pro. A combination patch puts both hormones in one patch, so there's no separate progesterone pill to remember.
CombiPatch and Climara Pro: what you need to know
Why a combination patch exists
Estrogen treats hot flashes and protects bone, but on its own it stimulates the lining of the uterus. A progestogen given alongside it keeps the lining thin. Women who have had a hysterectomy usually need estrogen only. Everyone else needs a progestogen as a pill, a 52 mg levonorgestrel IUD, or inside the patch itself.
Learn more →The first generic Climara Pro: what changed in October 2026
The FDA announced on October 20, 2026 that it had approved Zydus Pharmaceuticals' estradiol and levonorgestrel transdermal system, the first generic of Climara Pro. It's rated therapeutically equivalent: same doses, same once-weekly schedule, same uses. The FDA didn't give a launch date and says to ask the manufacturer about availability. As of October 27, Drugs.com still listed Climara Pro as brand only.
Learn more →Once a week vs twice a week
Climara Pro stays on for 7 days, so there's one patch change a week. CombiPatch is changed every 3 to 4 days, which means two changes a week and a smaller patch: 9 cm² against 22 cm². A smaller patch can be easier to keep stuck on, while one change a week is easier to remember.
Learn more →Continuous or cyclic: what happens to your periods
Climara Pro is used continuously, which aims for no monthly bleed, though bleeding is common at first: 36.8% reported vaginal bleeding in its 1-year trial. CombiPatch can be continuous, or used for the second half of a 28-day cycle after an estradiol-only patch, which usually brings a regular withdrawal bleed. On continuous CombiPatch, 53% had no bleeding by cycles 10 to 12.
Learn more →Two different progestogens
Climara Pro uses levonorgestrel, the progestin found in hormonal IUDs. CombiPatch uses norethindrone acetate, and comes in a stronger 0.25 mg version for women who need more progestogen. Neither is micronized progesterone, the body-identical option, which is only available as a pill or capsule in the US.
Learn more →Skin reactions and patches that won't stick
Skin reactions where the patch sits were the most common side effect of both: 40.6% on Climara Pro and 20% on CombiPatch 0.05/0.14 mg in their 1-year trials, measured differently, so they can't be compared directly. Both labels say to put the patch on clean, dry skin with no oil or lotion, press it down, and rotate sites. If a patch falls off, reapply it and keep your usual change day.
CombiPatch lives in the fridge
CombiPatch must be stored in the refrigerator at 36°F to 46°F, in its sealed pouch. Climara Pro is stored at room temperature and applied as soon as it's out of the pouch. Storage mistakes are one of the most common things people report to the FDA about CombiPatch, so check how your pharmacy kept it.
Combination patch cost and savings cards
Cash prices for 4 weeks are close: around $251.82 for 4 Climara Pro patches and $267.81 for 8 CombiPatch patches. Bayer's card takes up to $75 off Climara Pro for cash payers, or brings it to $25 with commercial insurance; CombiPatch's card takes $75 off each prescription for cash payers. A generic usually costs less once it launches, but Zydus hasn't set a price.
Learn more →Combination HRT patch by the numbers
From the studies on this page
women on Climara Pro developed endometrial hyperplasia in a year, vs 17.3% on estradiol alone
0 of 102
of women on continuous CombiPatch had no bleeding by cycles 10 to 12
53%
of FDA reports about Climara Pro describe a patch that didn't stick
32.8%
$252 vs $268
Trial numbers come from each drug's own studies and can't be compared head to head.
What people report to the FDA about CombiPatch and Climara Pro
Climara Pro (estradiol and levonorgestrel): 2,038 reports to the FDA, 258 serious · data through July 30, 2026
| Reaction | Reports | Share |
|---|---|---|
| Patch didn't stick | 668 | 32.8% |
| Physical problem with the patch | 329 | 16.1% |
| Applied the wrong way | 259 | 12.7% |
| Hot flashes | 226 | 11.1% |
| Rash where the patch sits | 189 | 9.3% |
| Didn't work | 158 | 7.8% |
- Reports with any problem with the patch itself, such as sticking, breakage or how it was applied: 1,198 of 2,038 (58.8%).
CombiPatch (estradiol and norethindrone acetate): 4,065 reports to the FDA, 915 serious · data through July 30, 2026
| Reaction | Reports | Share |
|---|---|---|
| Patch didn't stick | 778 | 19.1% |
| Stored the wrong way | 724 | 17.8% |
| Redness where the patch sits | 567 | 13.9% |
| Itching where the patch sits | 512 | 12.6% |
| Irritation where the patch sits | 384 | 9.4% |
| Vaginal bleeding | 232 | 5.7% |
- Reports with any skin term where the patch sits: 764 of 4,065 (18.8%).
CombiPatch, Climara Pro or something else: who each one suits
Climara Pro or its generic if you want one change a week
Strong evidenceOne patch a week, continuous, no fridge, and the only combination patch with a generic approved. It suits women past their last period who'd rather not bleed monthly, and who can put up with a larger patch. Ask your pharmacy whether the Zydus generic has reached them yet.
Related guide →CombiPatch if you want a smaller patch or a cyclic schedule
Strong evidenceA smaller patch changed twice a week, with a choice of two progestogen doses and a cyclic option that keeps a predictable monthly bleed. Ask about it if you're still having periods or bleeding hasn't settled on a continuous regimen.
Related guide →Estradiol-only patch plus progesterone or an IUD
Strong evidenceThe most flexible option: an estradiol patch in the dose you need, plus micronized progesterone or a 52 mg levonorgestrel IUD. You can change the estrogen dose without touching the progestogen, and estradiol-only patches have several generics.
Related guide →Non-hormonal options if you can't use estrogen
Some evidenceAfter breast cancer, a blood clot or with liver disease, both combination patches are off the table. Veozah, Lynkuet, SSRIs, SNRIs and gabapentin treat hot flashes without hormones.
Related guide →
When to call a doctor on a combination HRT patch
Urgent: Chest pain, sudden shortness of breath, a painful swollen leg, sudden vision loss or stroke signs
Call 911. These can be signs of a blood clot or stroke, which estrogen plus progestogen can raise the risk of.
Bleeding that's heavy, keeps going, or starts after months without any
See your doctor soon. Unusual bleeding on HRT needs checking to rule out a problem with the uterine lining.
A new breast lump
Book an appointment to have it checked.
A rash that blisters, spreads or won't settle when you move the patch
Ask your prescriber about a different patch or switching to gel or pills.
More →
Combination HRT patches: questions women ask
Is there a generic Climara Pro?
Yes, approved but not yet on shelves. The FDA announced the first generic, from Zydus, on October 20, 2026, and rated it therapeutically equivalent. No launch date has been given, so ask your pharmacy or Zydus about availability.
Is there a generic CombiPatch?
No. CombiPatch is sold as a brand only. Cash payers can use the CombiPatch card for $75 off each prescription, up to 12 a year.
What's the difference between CombiPatch and Climara Pro?
The progestogen and the schedule. Climara Pro contains levonorgestrel and is changed once a week. CombiPatch contains norethindrone acetate, is changed twice a week, and can be used continuously or in a cyclic regimen with monthly bleeding.
Will I still have periods on a combination patch?
On a continuous patch, bleeding usually settles over months: 53% on continuous CombiPatch had none by cycles 10 to 12. On cyclic CombiPatch, a monthly bleed is expected. Any bleeding that's heavy or starts after months without it needs checking.
What if my patch falls off?
Press it back on a new spot on your lower abdomen, or the buttock for Climara Pro. If it won't stick, put on a new one and keep your usual change day. Clean, dry skin without lotion or oil helps it stay on.
Do combination patches cause weight gain?
Weight gain is listed for Climara Pro at 2.8% in its 1-year trial, vs 4.9% on estradiol alone. Weight often shifts around menopause for other reasons, such as muscle loss, so it's worth looking at protein and strength training.
Related →Can I switch from Climara Pro to CombiPatch, or the other way?
Yes, with a new prescription. Both labels say to finish your current cycle before starting the new patch. Expect some irregular bleeding in the first months on a new regimen.
Do I need a combination patch if I've had a hysterectomy?
Usually not. Without a uterus, estrogen alone is the standard choice. Some women with a history of endometriosis are still given a progestogen, so check with your prescriber.
Is there a shortage of combination HRT patches?
Estradiol isn't on the FDA's drug shortage list, though some estradiol patches were hard to find as demand rose, and in September 2026 the FDA said supply had nearly doubled. If your combination patch is out of stock, ask about the generic Climara Pro or a separate estradiol patch plus a progestogen.
Related →Sources
- US Food and Drug Administration. FDA approves once-weekly generic hormone therapy patch for women. News release, October 20, 2026.
- Prescribing information: Climara Pro (estradiol and levonorgestrel transdermal system). Bayer HealthCare, 2026. DailyMed, US National Library of Medicine.
- Prescribing information: CombiPatch (estradiol/norethindrone acetate transdermal system). Noven, 2024. DailyMed, US National Library of Medicine.
- Drugs.com. CombiPatch prices, coupons, copay cards and patient assistance. Accessed October 2026.
- Drugs.com. Climara Pro prices, coupons, copay cards and patient assistance. Accessed October 2026.
- US Food and Drug Administration. FDA Adverse Event Reporting System (FAERS): reports naming CombiPatch (estradiol and norethindrone acetate), via openFDA. Data through July 30, 2026.
- US Food and Drug Administration. FDA Adverse Event Reporting System (FAERS): reports naming Climara Pro (estradiol and levonorgestrel), via openFDA. Data through July 30, 2026.
- DailyMed, US National Library of Medicine. Estradiol transdermal system labels (checked September 2026).
- British Menopause Society. Tool for clinicians: HRT preparations and equivalent alternatives. 2024.
- National 911 Program. 911.gov.
- US Food and Drug Administration. Drug Shortages database, searched for estradiol and progestogens (data as of September 26, 2026).
- US Food and Drug Administration. FDA update on estradiol transdermal patch availability. September 3, 2026.
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