Topical creams may seem similar to Oestra®, but they behave very differently in the body.
If you're currently using a transdermal hormone cream and considering a transition to Oestra®, it's important to understand that switching delivery methods is not always a one-to-one exchange. Even if the dose appears similar on paper, your body may absorb and utilize Oestra® differently because vaginal delivery and skin-based delivery work through very different tissues.
For most women, we recommend a gradual 2-week transition period when switching from transdermal creams to Oestra®. Rather than stopping your current hormone cream immediately, continue using it while beginning Oestra® and allow the two therapies to overlap for approximately two weeks. After that transition period, you can discontinue your previous cream and continue with Oestra® alone.
This gradual transition helps support more stable hormone levels and may reduce symptoms that can occur when changing hormone delivery methods.
How Transdermal Creams Work
Creams applied to the skin:
Must pass through multiple skin layers
Often result in low and inconsistent absorption
Research shows topical progesterone, for example, produces very low blood levels compared to other methods
How Oestra® Works
Oestra®:
Uses the vaginal route, which is highly absorbent
Delivers hormones directly into circulation
Produces reliable systemic levels
Absorption Comparison
Oestra®: ~80%
Topical creams: often much lower and inconsistent
What This Means
With Oestra®, women often experience:
Stronger and more predictable results
Better symptom relief
More efficient hormone use
Bottom Line
While both are “non-oral,” Oestra® is far more reliable and bioavailable than skin-applied creams.