If your pharmacy can't get your usual oestrogen patch, don't stop it or change how you use it on your own. Ask your pharmacist whether another brand of the same strength is available. If not, contact your prescriber early about other options, such as a different patch, a gel, a spray or tablets.

That is also the core advice in the US Food and Drug Administration's September 2026 update on patch supply. Demand for patches has risen sharply, and some brands and strengths have been hard to find in several countries.

This guide explains why it's happening, the questions worth asking, the shortcuts to avoid and the warning signs that need urgent help. Oestrogen is spelled estrogen in the US, and the oestrogen in these patches is estradiol (NHS guide to using oestrogen).

This article is general information, not personal medical advice. Your prescriber and pharmacist know your health history and can tell you what's safe for you.

Why are oestrogen patches hard to find?

In short, demand has grown faster than manufacturers can make patches. Several changes have come together.

More people are using hormone therapy. US health data company Truveta found that oestrogen-based hormone replacement therapy (HRT) prescribing more than doubled between January 2018 and February 2026. The rate rose from 11.5 to 23.5 per 1,000 women (Truveta Research).

The biggest rise was among women aged 45 to 54. Their rate went up by 184%, to 49 per 1,000, so about 1 in 20 women in that age group had a prescription by early 2026 (Truveta Research).

Patches became the most popular form. In the same data, patch dispensing more than tripled, from 6.2 to 19.9 per 1,000 women. That made patches the most common way to take oestrogen-based HRT, ahead of tablets. These are preliminary findings from US health records and haven't been peer reviewed (Truveta Research).

Official advice on HRT has shifted. In November 2025, the FDA asked manufacturers to remove boxed ("black box") warnings about cardiovascular disease, breast cancer and probable dementia from menopausal hormone therapy labels. Its decision followed a review of current evidence, including a reanalysis of data from women who started HRT within 10 years of menopause (HHS fact sheet).

The boxed warning about womb (endometrial) cancer stays on oestrogen-only products that act throughout the body. The FDA says demand for menopausal hormone therapy increased after the labelling change (FDA supply update).

In the UK, the NHS says older studies made many people reluctant to take or prescribe HRT. That view is now seen as out of date, and the NHS says the benefits of HRT usually outweigh the risks (NHS: benefits and risks of HRT).

Patches can't be made faster overnight. The FDA says the supply of approved estradiol patches has nearly doubled over the past year. Some steps can raise supply quickly, but bigger factory expansions take longer, because patches need specialised equipment and manufacturing processes (FDA supply update).

Questions to ask your pharmacist

Start with your pharmacist. Have your prescription details to hand: the brand, the strength and how often you change the patch.

"Is there another brand of the same strength?"

Several brands release the same amount of estradiol every 24 hours (ASHP shortage bulletin). In the US, the FDA says your pharmacist may be able to find another approved estradiol patch that can be substituted for yours, when appropriate (FDA supply update).

If you're offered a different brand, ask how to use it. Depending on the brand, you change a patch either once or twice a week (NHS guide to using oestrogen). Read the new leaflet and set a reminder for the new routine.

"Is there a serious shortage protocol for my patch?" (UK)

In the UK, a serious shortage protocol (SSP) lets a pharmacist supply an alternative without going back to your prescriber (Scottish Government circular). The current SSPs cover Estradot patches in 25, 50, 75 and 100 microgram strengths, and run until 8 January 2027 (NHSBSA SSP list).

Under these protocols, a pharmacist can give you the same strength and quantity of another listed brand (Scottish Government circular). They use their professional judgement to decide whether the swap suits you, and you have to agree to it (NHSBSA SSP list). SSPs are time-limited and get updated, so ask your pharmacist to check the current list.

"Can you order it in, or check another branch?"

Stock can change quickly. The FDA advises checking back with your pharmacy, because availability may change as more patches arrive (FDA supply update).

Ask when the next delivery is due. Ask too whether another branch or a nearby pharmacy has your exact brand and strength.

"Will a different brand or form cost me more?"

If you pay for your prescriptions or use health insurance, ask what you'd pay for the alternative before you switch. If the price is very different, check with your insurer or health plan whether the new product is covered.

Questions to ask your doctor or nurse

If no suitable patch can be found, your prescriber can change your prescription. The FDA advises talking to your healthcare provider about the options, and whether another estradiol product suits you, rather than stopping or changing treatment yourself (FDA supply update).

"Which alternatives are suitable for me?"

Oestrogen for menopause symptoms comes as patches, gel, spray and tablets (NHS: types of HRT). Gels and sprays go on the skin once a day and, like a patch, deliver oestrogen through your skin.

Ask what dose you'd use in the new form, how to use it, and when to get back in touch. Side effects often ease as your body gets used to a medicine (NHS: side effects of oestrogen). If they don't, your doctor might suggest a different dose or another type of HRT (NHS guide to using oestrogen).

"Would tablets be safe for me?"

Tablets are a common form of HRT, but their risks differ from those of skin-applied oestrogen. HRT tablets can increase the risk of blood clots, although the risk is still very low. Patches, gels and sprays don't increase that risk (NHS: benefits and risks of HRT).

Tablets, but not patches, gel or spray, also slightly increase the risk of stroke. That risk is also very low, particularly if you're under 60. If you're at risk of blood clots, you'll usually be advised to use patches, spray or gel rather than tablets (NHS: benefits and risks of HRT). Ask whether this applies to you before you agree to a switch.

"Do I still need my progestogen?"

If you still have your womb, you need a progestogen as well as oestrogen. Taking both helps protect against the risk of womb cancer (NHS: types of HRT). This applies whether your oestrogen comes from a patch, gel, spray or tablets.

Some patches contain both hormones (combined HRT). If yours does, check that the replacement contains a progestogen too, or that you're prescribed one separately (NHS: types of HRT).

"What should I do if I run out before we've sorted a switch?"

Ask this before it happens. The FDA says not to stop or change your medication without talking to your healthcare provider. If you can't get your usual medicine, it advises contacting them for guidance (FDA supply update).

When HRT stops, symptoms may come back for a short time. That is one reason the NHS usually recommends reducing the dose gradually when you decide to stop (NHS: when to take HRT). A plan agreed in advance means you won't have to make that call alone if a refill falls through.

What not to do when supplies are low

When patches are scarce, it's tempting to make each one go further. Some shortcuts can change your dose in ways nobody can predict.

• Don't wear a patch for longer than prescribed, or skip changes. Follow the instructions from your pharmacist or doctor, or the leaflet in the pack (NHS guide to using oestrogen). Don't change how you use your medicine without talking to your prescriber (FDA supply update).
• Don't cut a patch unless a professional has checked your exact product. NHS pharmacy guidance discourages cutting patches. It's outside the product licence, and makers can't guarantee the medicine is spread evenly, so the dose may be inaccurate (NHS Specialist Pharmacy Service). Reservoir patches, which hold the medicine in a gel, must never be cut. Cutting a matrix patch may release the dose unevenly (ASHP shortage bulletin). Any decision to cut applies only to one brand and strength (NHS Specialist Pharmacy Service).
• Don't double up. If you're late putting on a patch, never use two at once, or an extra one to make up for the delay (NHS guide to using oestrogen).
• Don't turn to compounded "bioidentical" creams as a stopgap. Compounded products are mixed by a pharmacy and aren't FDA-approved. The FDA has no evidence that they're safe and effective, or safer or more effective than approved hormone therapy (US Office on Women's Health).

Alternatives to the patch: how they compare

If your patch isn't available, these are the main options your prescriber may discuss. All of them need a prescription, and the details come from NHS guidance on types of HRT, using oestrogen and benefits and risks.

Vaginal oestrogen can't stand in for a patch if you use the patch for hot flushes, mood swings or sleep problems. And if you still have your womb, every option except vaginal oestrogen needs a progestogen alongside it (NHS: types of HRT).

If hormone therapy isn't possible for a while, other treatments and self-help measures can ease some symptoms. Our guide to menopause symptoms, stages and treatment options covers non-hormonal medicines and practical tips for hot flushes and sleep.

Shortage updates: US, UK and Canada

Supply varies by country, brand and strength, and it changes quickly. Here is what official sources say, and what it means when you ask for help.

United States

In September 2026, the FDA said patients were having difficulty getting their usual estradiol patches because of increased demand. It said patches remain available, though certain brands vary by pharmacy and area, and that it's working with all six manufacturers to increase supply (FDA supply update). The FDA hasn't given a date for when supply will catch up.

The FDA's update doesn't describe this as a shortage. The American Society of Health-System Pharmacists (ASHP), however, has listed estradiol patches as in short supply since January 2026. Its August 2026 update named 17 patch products from five manufacturers (ASHP shortage bulletin).

Some of those products were on back order, with makers unable to give a release date, while other brands and strengths were still available. That is why asking about another brand of the same strength is often worthwhile (ASHP shortage bulletin).

United Kingdom

Serious shortage protocols for Estradot 50, 75 and 100 microgram patches started in December 2024, and the 25 microgram protocol followed in April 2025. They've been extended several times and now run until 8 January 2027 (NHSBSA SSP list). If you use one of these patches, ask your pharmacist about them (see the pharmacist questions above).

Canada

Companies must report drug shortages to Health Product Shortages Canada, and anyone can search its database. During 2026, its reports have included shortages of several strengths of an estradiol patch.

Not every report affects patients. Companies must report whenever they can't fully meet demand, and most shortages are managed before they reach patients (Health Product Shortages Canada).

Elsewhere

If you live in another country, ask your pharmacist whether your patch is affected. You can also check whether your national medicines regulator publishes a list of medicine shortages.

When to get urgent medical help

Serious side effects from oestrogen are rare. But whether or not your treatment has changed, the warning signs below need prompt help. They come from NHS guidance for people using oestrogen (NHS: side effects of oestrogen).

Contact emergency services now if:

• you have pain in your chest and breathlessness – this could be a sign of a blood clot in your lungs (pulmonary embolism) or heart problems
• you have difficulty speaking or moving your arm or leg, or your face has dropped on one side – this could be a sign of a stroke
• your lips, mouth, throat or tongue suddenly swell, you're struggling to breathe or swallow, or your skin, lips or tongue turn blue, grey or pale – these can be signs of a serious allergic reaction

Don't drive yourself to hospital. Ask someone to drive you, or call for an ambulance.

Call your doctor or a medical helpline for advice now if:

• you have pain, redness or swelling in one of your legs, usually in your calf – this could be a sign of a blood clot in the leg (deep vein thrombosis, or DVT)

See your doctor if you notice:

• a lump or changes in your breasts, especially dimpling of the skin, changes in the nipple, or any lumps you can see or feel
• any change in vaginal bleeding after you've been taking oestrogen for more than a few months

Frequently asked questions

My patch fell off. Do I need to use a new one?

Yes. NHS advice is to put a new patch on a different area of skin, then change it again on your usual day. If it came off in the bath or shower, dry your skin and cool down before putting on the new one (NHS guide to using oestrogen).

When every patch counts, it helps to stop them coming loose. Don't put a patch on skin where you've recently used cream, talc or moisturiser, or under tight or elasticated clothing. Wait at least 1 hour before exercise that makes you sweat (NHS guide to using oestrogen).

My refill was late and I missed a patch change. What should I do?

Put on a new patch as soon as you can, then change it again on your usual day. Never use two patches at once, or an extra one to make up for the missed change (NHS guide to using oestrogen).

If you can't get a patch at all, contact your prescriber for advice on your treatment (FDA supply update). They may be able to prescribe another form to bridge the gap.

Your action plan for the next refill

1. Check your supply. Count your patches and note the date you'll run out.
2. Write down your prescription details. Note the brand, the strength (the amount released every 24 hours), how often you change it, and whether it also contains a progestogen.
3. Order early. Well before you run out, ask your pharmacy whether your exact patch is in stock or can be ordered.
4. Ask about substitutes. If it isn't available, ask about another brand of the same strength, or an SSP if you're in the UK.
5. Contact your prescriber before you run out if no suitable patch can be found, and agree a plan.
6. Keep checking back. Availability can change as new deliveries reach pharmacies (FDA supply update).
7. Know the warning signs listed under urgent medical help above, whatever form of oestrogen you end up using.

The bottom line

A shortage of your usual patch doesn't have to mean going without treatment. Start with your pharmacist, who may be able to find another brand of the same strength or, in the UK, use a shortage protocol. If no patch is available, your prescriber can talk you through a gel, spray or tablets, based on your own health.

Whatever happens, don't stop, stretch or cut your patches on your own. Keep taking a progestogen if you have a womb, plan each refill early, and get help straight away if you notice any of the warning signs above.

This article is for general information only. It doesn't replace advice from your doctor, nurse or pharmacist about your own treatment.

Sources

• US Food and Drug Administration: FDA update on estradiol transdermal patch availability (3 September 2026)
• US Department of Health and Human Services: Fact sheet: FDA initiates removal of "black box" warnings from menopausal hormone replacement therapy products (10 November 2025)
• Truveta Research: Estrogen-based hormone replacement therapy use is rising (9 April 2026; preliminary, not peer reviewed)
• American Society of Health-System Pharmacists: Drug shortage detail: estradiol transdermal system (updated 12 August 2026)
• NHS Business Services Authority: Serious shortage protocols (SSPs)
• Scottish Government circular, via Community Pharmacy Scotland: Extension to SSPs for Estradot transdermal patches (30 January 2026)
• Health Canada: Health Product Shortages Canada
• NHS: Types of hormone replacement therapy (HRT)
• NHS: Benefits and risks of hormone replacement therapy (HRT)
• NHS: When to take hormone replacement therapy (HRT)
• NHS: How and when to take or use oestrogen tablets, patches, gel and spray
• NHS: Side effects of oestrogen tablets, patches, gel and spray
• NHS Specialist Pharmacy Service: Cutting or masking transdermal patches safely
• US Office on Women's Health: Menopause treatment