Medication Guide App

Mestranol / Norethindrone Dosage

The information at Drugs.com is not a substitute for medical advice. ALWAYS consult your doctor or pharmacist.

Usual Adult Dose for:

Additional dosage information:

Usual Adult Dose for Contraception

Mestranol-norethindrone products are packaged in 21 or 28 day dosage preparations. The last seven tablets in 28 day dosage preparations are hormonally inert.

Regardless of the number of tablets in a package, the cycle length for oral contraceptives is generally considered to be 28 days. (The first day of menstrual bleeding is counted as day 1.)

Initiation of Oral Contraceptive Therapy

This product can be administered in two ways.

When initiating a Sunday start regimen, the first tablet may be taken on the first Sunday after menstruation begins. If a period begins on a Sunday, the first tablet may be taken on that day. When initiating a Sunday start regimen, another contraceptive method should be used until after the first 7 consecutive days of administration. For a 28 day package, one tablet is taken daily for 28 days and a new package begun on the following day. For a 21 day package, one tablet is taken daily for 21 days followed by 7 days with no medication. A new package of contraceptives is begun on the following day.

When initiating a Day 1 start regimen, the first tablet is taken on the first day on menstruation. Such initiation may increase the risk of spotting and breakthrough bleeding but decrease the risk of early ovulation and pregnancy. For a 28 day package, one tablet is taken daily for 28 days and a new package begun on the following day. For a 21 day package, one tablet is taken daily for 21 days followed by 7 days with no medication. A new package of contraceptives is begun on the following day.

Many clinicians recommend that additional contraceptive methods be used during the first cycle of hormonal therapy in order to reduce the risk of unintended pregnancy.

Missed Doses

If a woman misses one dose of active tablets, the missed dose should be taken as soon as it is remembered and the normal schedule should be resumed.

If a woman misses two doses in week 1 or week 2 of the cycle, 2 tablets may be taken as soon as they are remembered and 2 tablets taken the next day and the normal schedule may be resumed. (Additional contraceptive methods should be used for 7 days.)

If a woman misses two doses in week 3 or three doses at any time in the cycle, Day 1 starters should discard the current package and begin a new package that same day. Sunday starters should take 1 tablet daily from the current package until Sunday, when the current package is discarded and a new package begun. (Additional contraceptive methods should be used until the woman has taken at least 7 days of hormonal therapy from the new package.)

Usual Adult Dose for Abnormal Uterine Bleeding

Mestranol-norethindrone products are packaged in 21 or 28 day dosage preparations. The last seven tablets in 28 day dosage preparations are hormonally inert.

Regardless of the number of tablets in a package, the cycle length for oral contraceptives is generally considered to be 28 days. (The first day of menstrual bleeding is counted as day 1.)

This product can be administered in two ways.

When initiating a Sunday start regimen, the first tablet may be taken on the first Sunday after menstruation begins. If a period begins on a Sunday, the first tablet may be taken on that day. When initiating a Sunday start regimen, another contraceptive method should be used until after the first 7 consecutive days of administration. For a 28 day package, one tablet is taken daily for 28 days and a new package begun on the following day. For a 21 day package, one tablet is taken daily for 21 days followed by 7 days with no medication. A new package of contraceptives is begun on the following day.

When initiating a Day 1 start regimen, the first tablet is taken on the first day on menstruation. Such initiation may increase the risk of spotting and breakthrough bleeding but decrease the risk of early ovulation and pregnancy. For a 28 day package, one tablet is taken daily for 28 days and a new package begun on the following day. For a 21 day package, one tablet is taken daily for 21 days followed by 7 days with no medication. A new package of contraceptives is begun on the following day.

Missed Doses

If a woman misses one dose of active tablets, the missed dose should be taken as soon as it is remembered and the normal schedule should be resumed.

If a woman misses two doses in week 1 or week 2 of the cycle, 2 tablets may be taken as soon as they are remembered and 2 tablets taken the next day and the normal schedule may be resumed.

If a woman misses two doses in week 3 or three doses at any time in the cycle, Day 1 starters should discard the current package and begin a new package that same day. Sunday starters should take 1 tablet daily from the current package until Sunday, when the current package is discarded and a new package begun.

Usual Adult Dose for Endometriosis

Mestranol-norethindrone products are packaged in 21 or 28 day dosage preparations. The last seven tablets in 28 day dosage preparations are hormonally inert.

Regardless of the number of tablets in a package, the cycle length for oral contraceptives is generally considered to be 28 days. (The first day of menstrual bleeding is counted as day 1.)

This product can be administered in two ways.

When initiating a Sunday start regimen, the first tablet may be taken on the first Sunday after menstruation begins. If a period begins on a Sunday, the first tablet may be taken on that day. When initiating a Sunday start regimen, another contraceptive method should be used until after the first 7 consecutive days of administration. For a 28 day package, one tablet is taken daily for 28 days and a new package begun on the following day. For a 21 day package, one tablet is taken daily for 21 days followed by 7 days with no medication. A new package of contraceptives is begun on the following day.

When initiating a Day 1 start regimen, the first tablet is taken on the first day on menstruation. Such initiation may increase the risk of spotting and breakthrough bleeding but decrease the risk of early ovulation and pregnancy. For a 28 day package, one tablet is taken daily for 28 days and a new package begun on the following day. For a 21 day package, one tablet is taken daily for 21 days followed by 7 days with no medication. A new package of contraceptives is begun on the following day.

Missed Doses

If a woman misses one dose of active tablets, the missed dose should be taken as soon as it is remembered and the normal schedule should be resumed.

If a woman misses two doses in week 1 or week 2 of the cycle, 2 tablets may be taken as soon as they are remembered and 2 tablets taken the next day and the normal schedule may be resumed.

If a woman misses two doses in week 3 or three doses at any time in the cycle, Day 1 starters should discard the current package and begin a new package that same day. Sunday starters should take 1 tablet daily from the current package until Sunday, when the current package is discarded and a new package begun.

Usual Adult Dose for Gonadotropin Inhibition

Mestranol-norethindrone products are packaged in 21 or 28 day dosage preparations. The last seven tablets in 28 day dosage preparations are hormonally inert.

Regardless of the number of tablets in a package, the cycle length for oral contraceptives is generally considered to be 28 days. (The first day of menstrual bleeding is counted as day 1.)

This product can be administered in two ways.

When initiating a Sunday start regimen, the first tablet may be taken on the first Sunday after menstruation begins. If a period begins on a Sunday, the first tablet may be taken on that day. When initiating a Sunday start regimen, another contraceptive method should be used until after the first 7 consecutive days of administration. For a 28 day package, one tablet is taken daily for 28 days and a new package begun on the following day. For a 21 day package, one tablet is taken daily for 21 days followed by 7 days with no medication. A new package of contraceptives is begun on the following day.

When initiating a Day 1 start regimen, the first tablet is taken on the first day on menstruation. Such initiation may increase the risk of spotting and breakthrough bleeding but decrease the risk of early ovulation and pregnancy. For a 28 day package, one tablet is taken daily for 28 days and a new package begun on the following day. For a 21 day package, one tablet is taken daily for 21 days followed by 7 days with no medication. A new package of contraceptives is begun on the following day.

Missed Doses

If a woman misses one dose of active tablets, the missed dose should be taken as soon as it is remembered and the normal schedule should be resumed.

If a woman misses two doses in week 1 or week 2 of the cycle, 2 tablets may be taken as soon as they are remembered and 2 tablets taken the next day and the normal schedule may be resumed.

If a woman misses two doses in week 3 or three doses at any time in the cycle, Day 1 starters should discard the current package and begin a new package that same day. Sunday starters should take 1 tablet daily from the current package until Sunday, when the current package is discarded and a new package begun.

Liver Dose Adjustments

Data regarding the pharmacokinetic disposition of oral contraceptive pills in women with liver dysfunction are not available. It is recommended that alternatives be considered and particular caution (careful monitoring of side effects) if these drugs must be used.

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