The toxic effect is related linearly through a relatively large range of body weights, to the body weight of the victim, and, The mechanism of toxicity is the same for âsimilar animalsâ, i. e. one may conduct toxicity tests on say rats or mice and apply the LD50 data to human, since both are mammals.
For moderate menstrual cramps, the nonsteroidal anti-inflammatory drugs (NSAIDs, such as ibuprofen [Advil, Motrin, Nuprin, etc.] or naproxen [Aleve, Anaprox, Naprosyn, Naprelan]) are often helpful.
How to Stop Your Period. Use Contraceptives. The best way to stop your period is to use birth control or contraceptives. Before you do it is best to see a doctor who will advise you on which type will best suit your needs. Your doctor will explain what to expect, what dosage to use, and any risks involved.