Levonorgestrel Flashcards
1
Q
chemistry
A
synthetic progesterone
2
Q
physiology
A
prevents release of LH
which normally stimulates ovulation
most effective if given before ovulation
3
Q
pharmacology
A
binds to progesterone and androgen receptors
slows release og GnRH from hypothalamus and so LH now inhibited
inhibits rupture of follicles and viable egg release fro the ovaries
4
Q
clinical
A
high dose in emergency conditions
low dose in planned
not indicated for regular usage
must be given within 72 hours
