Repro drugs Flashcards
Leuprolide mechanism
GnRH analog
use: leuprolide
- infertility (give pulsatile)
2. prostate cancer, prostate cancer, uterine fibroids, precocious puberty (continuous)
tox leuprolide
antiandrogen, N/V
testosterone use:
hypogonadism
burn victims
effect of testosterone on LDL and HDL
increase LDL
Decrease HDL
finasteride mech
5a reductase inhibitor
use of finasteride
BPH
hair growth
flutamide mechanism
competitive inhibitor of androgens at testosterone receptor
use: flutamide
prostate carcinoma
ketoconazole mechanism
inhibits steroid synthesis thru desmolase
spironolactone mech
blocks testosterone binding
use: ketoconazole and spironolactone
Hirsutism in PCOS
DES and mestranol
estrogens
mech clomiphene
estrogen partial agonist blocking feedback inhibition. Increase in LH/FSH=ovulation
tox clomiphene
hot flashes, multiple pregnancies
ovarian enlargement
visual disturbances
tamoxifen mechanism
estrogen antagonist on breast tissue
use: tamoxifen
ER positive breast cancers
raloxifene mechanism
- bone estrogen agonist
2. estrogen antagonist elsewhere
indication for raloxifene
osteoporosis
tox HRT
endometrial cancer possibly CV risk
what do we add to estrogen in HRT to reduce risk of endometrial cancer
progesterone
anastrozole/exemestane mechanism
aromatase inhibitors in postmenopausal women with breast cancer
use: progestins
endometrial cancer
abnormal uterine bleeding
mifepristone mechanism
competitive inhibitor of progestins
use: Mifepristone
termination of pregnancy with misoprostol (PGE1)
mechanism OCP
Inhibition of LH/FSH and no estrogen surge
=no LH surge
THickening of cervical mucus
terbutaline mechanism
B2 agonist
–relaxes uterus
use: terbutaline
reduces premature uterine contractions
tamsulosin mechanism
a1 antagonist selective for prostate receptors a1AD
use: tamsulosin
BPH
sildenafil mechanism
inhibits phosphodiesterase 5, increasing cGMP
–relaxing smooth muscle
tox of sildenafil
headache, hot, heartburn
Impaired blue/green vision
sildenafil contraindicated in
pts taking nitrates
–LIFE THREATENING HYPOTENSION
Danazol mechanism
Synthetic androgen
–Partial agonist at androgen receptors
Use danazol
endometriosis and hereditary angioedema
tox of danazol
weight gain edema acne masculinization HEPATOTOX low HDL