What affects Noriday?

There are a number of factors that can make Noriday less effective. If you take the pill late, you may not be protected from pregnancy. If the pill is more than three hours late or you miss more than one pill, you will not be protected from pregnancy. Also, if you take a gap in-between the pill, you will not be protected from pregnancy and additional contraception is needed for seven days in all instances.

Medications can also make the pill less effective. Some medications can cause the pill to stop working properly and you must be aware that this is a possibility. If you take any drugs to treat epilepsy, HIV or arthritis, they will have an adverse effect on the pill and stop it from working. Antibiotics and some sedatives have the same effect. There are a number of un-prescribed medications such as St Johns wort that can affect the pill so check with your doctor to make sure these interactions will not occur. Always tell your doctor what medication you are on because there are a number of other medications that are not mentioned here that can reduce the pills success. If you are going to be using medication for a short period of time, the doctor may advise that you use additional contraception but if it is not a long time, you should consider changing your form of contraception.

If you are sick or have severe diarrhoea, the pill may not be effective. It may have not had enough time to become fully absorbed into your blood stream; thereby its effectiveness is reduced. You are advised to carry on taking the pills as normal but use additional contraception during your illness and for at least seven days after you are better.

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