Aspirin usually lasts for up to 5 years past the expiration date before it really loses it's effectiveness.
Aspirin is best used before the expiration date and within a year of the expiration date.
However the aspirin will remain safe to take and use even 10 years or longer past the expiration date.
However the longer the aspirin is expired the less effective the aspirin is but it's still okay to take it.
Yes it's safe to take expired aspirin and it will not harm you.
Taking expired aspirin is not harmful and is safe but when aspirin is expired the aspirin loses it's effectiveness.
So when you take expired aspirin it may not work on the pain or whatever you have as good as fresh non expired aspirin.
So you might need to take more than your normal dosage of the expired aspirin to get the results of fresh aspirin.
If you have expired aspirin it's better to throw it out and get fresh aspirin so that it works better on your ailments and pain.
But you can safely take the expired aspirin if you want too.
Even other expired medicines are safe to take but they are not as effective when the medicine is expired.