Yes, though you can reduce those effects by always taking aspirin with or after food. You shouldn't take aspirin if you have, or have had, a gastric ulcer.
Aspirin contains Acetylsalicylic acid, which is a gastric irritant.
Yes. Aspirin is a known potential irritant to the gastric mucosal lining. If aspirin has been recommended/prescribed by your physician, it should be taken with food, not on an empty stomach.
gastric bleeding
You should always talk to your cardiologist before changing, commencing or ending medication of any kind that has a carioloogical effect. That said, there is no synergy between aspirin and any cholesterol med I know, and this combo is prescribed often. The problems I'd be most concerned with are that aspirin is a gastrointestinal irritant. Be reminded I'm not a doctor and this isn't medical advice.
What is the effect of impurity of aspirin in humans body
No. Aleve does have an anti-platelet effect but it's shorter in duration than that provided by aspirin. Further, it will interfere with the anti-platelet effect of aspirin if taken in parallel with aspirin.
yes it is, as it has an irritant effect in it, also 'cause it is a slippery substance.
Aspirin is absorbed both in the stomach and the small intestine , for the former the cause lies beyond the fact that the gastric PH (1.5-2.5) is lower than the pka of aspirin (3.5) such that the ionization of aspirin is so much limited and the unionized and subsequently the lipophilicity of aspirin increases so that it's easily absorbed into the gastric mucosal cells. for the latter , aspirin absorption is due to the large absorptive surface area of the small intestine despite the fact that the intestinal PH is higher than the pka of aspirin , but still the surface area help absorption of the unionized fraction of aspirin.
Aspirin may prevent heart disease.
Milk
Aspirin does not have an effect on radish seeds. If it has, surely it doesn't help them grow but stop them from growing. This is based on an experiment I conducted. The seeds which were given aspirin didn't germinate at all, while the ones which were not given aspirin germinated (all of them).
No. Aleve does have an anti-platelet effect but it's shorter in duration than that provided by aspirin. Further, it will interfere with the anti-platelet effect of aspirin if taken in parallel with aspirin.