Nishmat's Women’s Health and HalachaIn memory of Chaya Mirel bat R' Avraham

  • Hebrew
  • English
  • Espnaol
  • Francais
  • donate

Theory of Seasonale

11 November, 2004


There is a new form of contraceptive pill on the market – one which lets a woman have only four periods a year. The most common one, and the one that I have seen advertised, is called Seasonale. I am aware that this form of contraception has not been around for very long and that long-term studies are required to determine its safety and effectiveness. I am also aware that there are potential problems with spotting here – the pill apparently causes spotting in many women. But overall, theoretically speaking, what is the halachic approach to this form of birth control? Is there anything wrong with safely having only four periods a year? Clearly, this would make a woman niddah for only a fraction of the time she generally is, and this has some very exciting implications. Thank you for your time and help, and for your wonderful site.


Thank you for the compliment.

There is no obligation to be niddah – only to observe the relevant halachot when you are. Women who go from pregnancy to nursing to pregnancy can end up being niddah only once every year or two.

The spotting that can occur with prolonged use of hormonal contraception (and our anecdotal experience is that this is fairly common) can sometimes also render a woman niddah. This can create real difficulties, as it is unpredictable and one can end up becoming niddah soon after mikveh use. Therefore, for many women, a monthly predictable period works better.

On the other hand, not all women spot, and there is no way to know how a particular woman will react without trying. Therefore, a woman can decide to try this method. She and her husband should be prepared for a difficult beginning and be willing to give it at least a few months, since spotting does sometimes lessen as the body gets use to the new hormonal milieu.

A woman who tries Seasonale, and finds that it continues to cause spotting, could discuss with her physician the use of a different formulation. The active pills of any combination contraceptive can be extended for longer than the traditional 3 weeks to allow one to become niddah less often. In that case, it often helps to build up slowly (3 weeks the first cycle, 4 weeks the second etc).

This internet service does not preclude, override or replace the psak of any rabbinical authority. It is the responsibility of the questioner to inform us of any previous consultation or ruling. As even slight variation in circumstances may have Halachic consequences, views expressed concerning one case may not be applied to other, seemingly similar cases. All health and health-related information contained within Nishmat's Women's Health & Halacha Web site is intended to be general in nature and should not be used as a substitute for consulting with your health care professional. The advice is intended to offer a basis for individuals to discuss their medical condition with their health care provider but not individual advice. Although every effort is made to ensure that the material within Nishmat's Women's Health & Halacha Web site is accurate and timely, it is provided for the convenience of the Web site user but should not be considered official. Advice for actual medical practice should be obtained from a licensed health care professional.

For further questions or comments: 

The Nishmat Women's Health and Halacha Site is a public service of Nishmat, The Jeanie Schottenstein Center for Advanced Torah Study for Women. This project and others like it are made possible by contributions from people like you. If you have benefited from the service, and wish to enable us to help others, click here to donate.

Users of Internet filtering services: This site discusses sensitive subjects that some services filter without visual indication. A page that appears 100% complete might actually be missing critical Jewish-law or medical information. To ensure that you view the pages accurately, ask the filtering service to whitelist all pages under

Accessibility Toolbar