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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How Long Does Levonelle Pill Stay In The System?

I about to take levonelle morning after pill but I am asking how long it stay in me system? I am due a blood test next month with the doctor as my I am having problems with my cycle, will they detect levonelle in my bloods? As I don t want my mum to know I ve taken it
Thu, 24 Nov 2016
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General & Family Physician 's  Response
Hi,
Thanks for posting in HCM.
I understand your concern.
Levonelle pill is morning after pill (emergency contraceptive pill). It contains 'Levonorgestrel', which is a hormonal preparation.
it needs to be taken within 72 hours of unprotected intercourse to prevent unwanted or accidental pregnancy. The pill would prevent pregnancy by causing breakthrough bleeding within 3 weeks from the day of its intake.
It is rapidly and completely absorbed after oral administration (bioavailability about 100%). It is about 97 to 99% protein-bound.
Levonorgestrel is conjugated to form sulfate conjugates and, to a lesser extent, glucuronide conjugates in plasma. About 45% of levonorgestrel and its metabolites are excreted in the urine and about 32% are excreted in feces, mostly as glucuronide conjugates. Its half-life is about 42 +/- 16 hours, which is dependent on body weight, body fat and length of treatment.
Hope the information provided would be helpful.
All the best.
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How Long Does Levonelle Pill Stay In The System?

Hi, Thanks for posting in HCM. I understand your concern. Levonelle pill is morning after pill (emergency contraceptive pill). It contains Levonorgestrel , which is a hormonal preparation. it needs to be taken within 72 hours of unprotected intercourse to prevent unwanted or accidental pregnancy. The pill would prevent pregnancy by causing breakthrough bleeding within 3 weeks from the day of its intake. It is rapidly and completely absorbed after oral administration (bioavailability about 100%). It is about 97 to 99% protein-bound. Levonorgestrel is conjugated to form sulfate conjugates and, to a lesser extent, glucuronide conjugates in plasma. About 45% of levonorgestrel and its metabolites are excreted in the urine and about 32% are excreted in feces, mostly as glucuronide conjugates. Its half-life is about 42 +/- 16 hours, which is dependent on body weight, body fat and length of treatment. Hope the information provided would be helpful. All the best.