Aspirin is a first-line treatment for fever and joint pain symptoms of acute rheumatic fever. Treatment often lasts one to two weeks and is rarely indicated for long periods of time. Once the fever and pain are gone, aspirin is no longer needed because it does not reduce the incidence of remaining heart complications and rheumatic heart disease. [138] [139] Naproxen has been shown to be as effective as aspirin and less toxic, but due to limited clinical experience, naproxen is only recommended as a second-line treatment. [138] [140] Aspirin breaks down easily in the body into salicylic acid, which itself has anti-inflammatory, antipyretic and analgesic effects. In 2012, salicylic acid was found to activate amp-activated protein kinase, which has been suggested as a possible explanation for some of the effects of salicylic acid and aspirin. [44] [45] The acetyl content of the aspirin molecule has its own goals. Acetylation of cellular proteins is an established phenomenon in the regulation of protein function at the post-translational level. An analysis of several studies found a triple increase in adverse events such as myocardial infarction in patients who stopped taking aspirin before surgery.
The analysis showed that the risk depends on the type of surgery performed and the patient`s indication for the use of aspirin. [205] A meta-analysis up to 2019 found that there was a link between taking aspirin and a lower risk of colon, esophageal and stomach cancer. [133] And in the CAPP2 study, the number of cases of gastrointestinal bleeding in the aspirin group and the placebo group was very similar. For a small number of people, taking aspirin can lead to symptoms such as hives, swelling, and headaches. [189] Aspirin may worsen symptoms in people with chronic urticaria or cause acute symptoms of hives. [190] These reactions may be due to allergic reactions to aspirin or, more commonly, to its inhibitory effect of the COX-1 enzyme. [190] [191] Skin reactions may also be related to systemic contraindications observed in bronchospasm precipitated by NSAIDs[190],[191] or in people with atopy. [192] In children with Kawasaki disease, aspirin is taken at doses based on body weight, first four times a day for up to two weeks, and then at a lower dose once a day for another six to eight weeks. [163] In addition to enteric coating, “tampon” is the other main method used by companies to alleviate the problem of gastrointestinal bleeding.
Tampon remedies are said to work by preventing aspirin from concentrating in the walls of the stomach, although the benefits of buffered aspirin are controversial. [Citation needed] Almost all buffering agents used in antacids can be used; Bufferin, for example, uses magnesium oxide. Other preparations use calcium carbonate. [180] Gaseous agents in effervescent formulations of tablets and powders can also serve as a buffering agent, such as sodium bicarbonate, found in Alka-Seltzer. [181] Aspirin is known to interact with other medications.