The term natural progesterone is often confused with synthetic progestin. Progestins are derivatives of progesterone used in medications like oral contraceptives or Provera. While their chemical structure is only slightly different, their effects in the body are distinctly unmatched, and these medications should not be used interchangeably. For example, synthetic progestins can inhibit ovulation, thus suppressing the body s output of it s own hormone, progesterone. It is important to understand exactly which medication is being prescribed.
Physicians prescribing progesterone have several dosage forms to choose between.
The tablet produces consistent blood levels, which is critical for symptom management in PMS or menopause, and to avoid drowsiness, erratic menstrual cycles or breakthrough bleeding. Physicians often start patients out on rectal suspension because it allows them to titrate the dose to each woman s needs. The liquid suspension is administered rectally using a small syringe with applicator. Suppositories also provide consistent, even absorption. When used vaginally, many women complain of leakage that occurs.