Norethisterone for Delaying Periods

From Patient UK

Delaying a Period

Some women may wish to delay a period. This may be if a period is due at a time that would be very inconvenient. For example, on a special holiday, during an exam or other major life event. Delaying a period cannot be guaranteed but the following usually work.

Women taking the combined oral contraceptive pill

If you are taking a fixed dose combined pill then simply start the next pack without the usual 7 day break. Taking two packs 'back to back' in this way is safe if it is done occasionally. Do not go longer than two packs together without stopping for a period.

If you are taking a tri- or bi-phasic type of pill then you will need to take the last 'phase' of the pills from the second pack immediately after finishing the first pack. Alternatively you can change to a fixed dose pill.

How does this work
Women taking 'the pill' do not have normal periods. Rather, they are 'withdrawal bleeds' which occur when the oestrogen in the pill is not taken. The hormones in the pill help to sustains the lining of the uterus. The withdrawal bleed will not normally occur until the pill is stopped and the level of hormone in the body falls (usually once a month in the 7 day break between pill packs).

Women not taking 'the pill'

Norethisterone tablets can be prescribed. The dose is 5mg three times a day starting 3-4 days before a period is due. It can be continued for up to 2 weeks or so until you want to have a period. The period will normally begin 2-3 days after stopping it. Norethisterone is normally safe to take. Some women have side effects such as bloating, stomach upset, breast discomfort and reduced libido (sex drive).

How does this work
Norethisterone is a progestogen hormone. Progestogens are hormones that sustain the lining of the uterus. Normally at the time before a period there is a fall in the level of progestogen hormone in the body. When it falls below a certain level the lining of the uterus is shed as menstrual period. By taking norethisterone tablets (progestogen) the lining of the uterus is sustained until the tablet is stopped.