The hormone that holds the early pregnancy steady.
What progesterone does
Progesterone is the hormone of pregnancy. After an embryo settles in, your body needs progesterone to keep the uterine lining stable and to tell your immune system not to reject the pregnancy.
In a natural pregnancy, the ovary makes this hormone. In IVF, your ovary may not make enough, so your doctor gives extra progesterone for the first few weeks.
This support is critical from embryo transfer until the placenta takes over hormone production around week 10 to 12.
Why micronised matters
The progesterone inside this softgel is micronised — broken into very small particles before being mixed with oil.
Why this matters: progesterone is naturally a difficult molecule for the body to absorb. Micronising it makes the particles small enough to dissolve and absorb properly.
This is the same form of progesterone your body makes naturally, delivered in a softgel.
What to expect
Normal: drowsiness, mild breast tenderness, mild bloating. White vaginal discharge if using vaginally (this is the softgel coating dissolving).
Call your doctor: sudden severe abdominal pain, heavy bleeding, severe headache, leg pain or swelling, chest pain.
Storage: below 25 degrees C, away from light.