![](https://nthumb.tpgimages.com/mid2_com_img/1339/7975/TOP10165035.jpg)
Norethindrone molecule. Computer graphic of a molecule of the contraceptive hormone norethindrone (chemical formula: C18.H26.O2). The atoms are represented as spheres, and are colour coded: carbon is green, hydrogen is white and oxygen is blue. Norethindrone has a similar mode of action to the natural female hormone progesterone, and it is commonly used in contraceptive pills. It is taken either by itself, or combined with a synthetic oestrogen. These oral contraceptives interfere with the body's natural hormone balance to prevent ovulation, and hence the risk of pregnancy.
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Details
Creative#:
TOP10165035
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
N/A
Right to Privacy:
No
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