Comparative study of progesterone plasma levels after nasal spray and intramuscular administration of natural progesterone in menopausal women.

11 mg natural progesterone (P) was administered to 20 healthy menopausal women by means of a nasal spray or intramuscular injection. Circulating P levels were calculated at various times after administration. The spray formulation yielded a CMax of 3.

Progesterone administration by nasal spray in menopausal women: comparison between two different spray formulations.

The aim of the study was to compare the bioavailability of progesterone dissolved in almond oil or dimethicone, and administered by nasal spray. Twenty healthy menopausal women were randomly allocated to treatment by four doses of intranasal spray either of a progesterone solution in almond oil, 2 mg/0.1 ml, corresponding to a total dose of approximately 11 mg of progesterone, or a progesterone solution in dimethicone 5 mg/0.

Nasally-administered progesterone: comparison of ointment and spray formulations.

The aim of the study was to compare the bioavailability and clinical usefulness of progesterone (P) administered nasally in spray or ointment form. Twenty healthy post-menopausal women were randomly allocated to treatment by either intranasal spray (4 doses of an oil-based P solution at a concentration of 2 mg/0.1 ml, corresponding to a total dose of approximately 11 mg of P) or an ointment (quantity 0.

Progesterone administration by nasal spray.

The bioavailability and the clinical usefulness of the P administered by nasal spray were investigated. Ten healthy menopausal women received an IN spray administration (4 doses of an oleic P solution 20 mg/mL, corresponding to nearly 11.2 mg of P) and the circulating P levels were calculated.