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.
Another kind of pill that may change the number of monthly periods is the low-dose progesterone pill, sometimes called the mini-pill. This type of birth control pill differs from the other pills in that it only contains one type of hormone â progesterone â rather than a combination of estrogen and progesterone.