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.
To relieve mild menstrual cramps: Take aspirin or another pain reliever, such as acetaminophen (Tylenol), ibuprofen (Motrin) or naproxen (Aleve). (Note: For best relief, you must take these medications as soon as bleeding or cramping starts.)