Switching between oestrogen preparations is feasible and sometimes necessary. You can do this by stopping the old preparation and starting the new preparation at the next scheduled dose. There will then likely be changes to frequency and dose, depending on the preparation. This will still be based on your blood tests and tailored to you.
We still strongly recommend that you take regular blood tests to make sure that you're seeing changes at the best rate, and to help prevent any side effects. You can read more about blood tests here.
How to Request a Different Preparation
When you submit your Transition Pack Request, choose the preparation you'd prefer and include your most recent blood test results. If you have any issues or questions, you can reach out to us via the Chatbot in the bottom right corner of the screen.
Making the Change
This table helps explain how to make the change from one preparation to another:
| Switching From and To | Approach and Timing |
|---|---|
| Oestrogen Cypionate → Gel/Patches | Stop injectable; start gel/patches on the day the next dose would have been due. |
| Gel/Patches → Oestrogen Cypionate | Stop gel/patches; start injections next day. Take at the interval prescribed. |
| Gel/Patches → Tablets | Stop gel/patches; start tablets on the day the next dose would have been due. |
| Tablets → Gel/Patches | Stop tablets; start gel/patches on the day the next dose would have been due. |
| Tablets → Oestrogen Cypionate | Stop tablets; start injections next day. Take at the interval prescribed. |
| Oestrogen Cypionate → Tablets | Stop injectable; start tablets on the day the next dose would have been due. |