Billings Ovulation Method

Drs John and Evelyn Billings developed the Billings Ovulation Method through extensive clinical research. Trials of the Billings Ovulation Method, in both developed and developing countries, involving couples from different socio-economic and cultural backgrounds, shows the method is highly reliable and acceptable.

99% effective for avoidance of pregnancy

When understood and used according to the rules the method is 99% effective for the avoidance of pregnancy. Consult an accredited Billings Ovulation Method teaching centre.

Achieving a pregnancy

Knowledge of the Billings Ovulation Method is useful in overcoming cases of infertility. The primary management of the apparent infertile couple is to teach them the Billings Ovulation Method (see guidelines).

Professor J. B. Brown, D.Sc. Ph.D., is responsible for the hormonal monitoring of the reproductive cycle relevant to Natural Family Planning and thereby verified the work carried out by the Drs Billings.

Professor Brown also developed the Ovarian Monitor which assists with the identification of rare hormonal problems and is used in cases of infertility. For further information contact St. Michael NFP Services Pty Ltd, C/- Billings Family Life Centre, 27 Alexandra Parade, Fitzroy North 3068, Australia, Fax : 61 ( 0) 3 9482 4208, Email

Professor Erik Odeblad, MD, Ph.D., is a world expert on the biology of the cervix and has, through his studies, verified the clinically established rules for the Billings Ovulation Method.