The main ingredient in aspirin is salicylic acid, says CNN. Salicylic acid is found in shrubs and plants, such as jasmine, peas, beans and clover along with some grasses and trees.
Aspirin works by preventing the human body from producing prostaglandins. Prostaglandins are natural chemicals with many roles in the body, including sending pain messages to the brain, causing blood to clot and keeping the stomach lining thick and healthy.
The most common dose of aspirin given to prevent a stroke is 81 milligrams, according to WebMD. However, some patients need to take as much as 325 milligrams of aspirin per day to prevent stroke. Doctors recommend taking aspirin only if the risk of stroke outweighs the risks of aspirin.
Dogs may be given aspirin for injuries or other short-term health issues, according to WedMD. Long-term use of aspirin by dogs is considered risky and can cause increased bleeding, which is due to its blood-thinning properties.
Dogs can be given small doses of aspirin under certain conditions and with supervision from a licensed veterinarian. Dogs do not metabolize aspirin the same way humans do and are more prone to adverse effects from the drug.
Though aspirin is not toxic to dogs, owners should not give aspirin to a dog except under the direct supervision and advice of a veterinarian, according to PetMD. Commonly used to treat short-term musculoskeletal pain, aspirin is known to cause gastric pain, bleeding and ulcers.
Babies should not take aspirin due to the well-established connection between aspirin and Reye syndrome, a potentially deadly condition, says WebMD. Over 90 percent of children who developed Reye syndrome had been treated with aspirin during a viral illness, such as flu or chickenpox, according to B
Common side effects of aspirin include heartburn, irritation of the stomach or intestines, stomach cramps, and vomiting, according to WebMD. Rarer side effects include stomach or intestinal bleeding, anemia, drowsiness, hives, and bronchospasm. Some patients also experience a mild skin rash or loss
It is possible to give cats aspirin but there are dosage limits. Never give a cat more than half of a children's 81mg tablet every two days, according to All Feline Hospital. Any more could be fatal.
Plant extracts containing the active ingredient in aspirin have been used medicinally since at least 400 B.C., but the modern drug known as aspirin was first developed and patented by Bayer, a German pharmaceutical company. Bayer coined and trademarked the name "Aspirin."