Estradot Patch Issues
What’s happening?
There are currently reports of issues affecting some batches of Estradot brand estrogen patches in New Zealand.
Many women have noticed their perimenopause or menopause symptoms returning or worsening despite no changes to their hormone therapy.
Others have reported that their patches are not sticking properly, or are causing new problems such as skin redness, itching, or rashes.
So far, Sandoz (the manufacturer of Estradot) has received around 50 complaints and Medsafe around 149.
While this issue is not affecting every woman or every batch - the women noticing changes aren’t imagining it — something genuinely seems to be different for some.
When did the problem start?
It’s hard to pinpoint exactly, but most women began noticing changes within the last two to three months.
Which batches are affected?
There are reports of possible problems with multiple batches, but the most complaints have come from batch numbers 96622 and 96707.
What’s being done about it?
Sandoz (the manufacturer of Estradot) has tested 10 batches, including batch number 96622, and reported no product-related issues.
They have suggested the following possible causes:
- Application technique – inconsistent skin preparation or placement
- Patient-specific variables – differences in skin type, activity level, or absorption
- Environmental factors – humidity or temperature affecting adhesion
At this stage, Medsafe says it has not found enough evidence to warrant a recall.
But they are still investigating the issue.
Download the Letter for Healthcare Professionals from Sandoz:
What can you do?
If you’ve noticed changes in your symptoms, it can sometimes be difficult to work out the exact cause.
It could be that your underlying hormone needs have changed, or other non-hormonal factors — such as stress or illness - might be playing a part.
However, if you suspect it's because your Estradot patches don't seem to be working properly - here’s what to do next:
- Email Medsafe: recalls@health.govt.nz
- Email Sandoz: mi.new_zealand@sandoz.com or adverse.event.nz@sandoz.com
- Phone Sandoz NZ: 0800 SANDOZ (0800 726 369)
- Ask if they can supply you with a different batch of Estradot, or switch you to a different brand of patches, such as Mylan
- You may need a new prescription from your doctor to do this (see advice below)
- Request a new prescription for a different batch of Estradot or a different brand of patch (e.g. Mylan)
- Book an appointment with your doctor to discuss switching to an alternative form of estrogen, such as gel or oral tablets (if suitable for you)
- Be aware that switching estrogen types or doses may take a few weeks to stabilise.
Bottom Line...
Many women are not having any issues at all with their Estradot patches - so this is not across the board with all patches.
But for some women, something has clearly changed — and their experiences are absolutely valid.
You are not making this up, and you are not suddenly doing anything wrong with your patches.
So if something doesn’t feel right—trust your instincts.
You know your body better than anyone.
Seek advice, report your concerns, and don’t be discouraged if you’re told “everything’s fine” when it clearly isn’t for you.