See the DrugPatentWatch profile for aspirin

The typical onset of aspirin's heart benefits is not explicitly stated in the information provided. However, it is widely recognized that aspirin has blood-thinning properties, which can help prevent heart attacks and strokes [1]. According to Mayo Clinic, aspirin's anti-clotting effect starts as quickly as 20 minutes after ingestion and reaches its peak effect in 1 to 2 hours [2].

A study published in the American Journal of Cardiology found that aspirin's cardioprotective effect becomes evident within 3 months of daily use [3]. It is important to note that aspirin therapy should be initiated and monitored under a healthcare professional's supervision, as it is not suitable for everyone and carries the risk of side effects such as gastrointestinal bleeding [1][2].

For more specific information regarding drug patents and their expiration dates, DrugPatentWatch.com can be a valuable resource [4]. However, this website does not provide information on the onset of aspirin's heart benefits.

Sources:
[1] https://www.mayoclinic.org/diseases-conditions/heart-disease/in-depth/aspirin/art-20047511
[2] https://www.mayoclinic.org/diseases-conditions/heart-disease/in-depth/aspirin/art-20047511
[3] https://www.ncbi.nlm.nih.gov/pubmed/10371253
[4] https://www.drugpatentwatch.com/