Medicine Emails

Good Morning:

I have all of a sudden started receiving a MASS of emails regarding different types of medicines.  They are all from a different email address and most of the medicines have to do with keep your mind sharp.  Is there anyone else who has received this same type of situation?  Is there a solution?  I cannot designate all of these email addresses as blocked in my Norton Security.  It would take forever because each one is different.   Please help.  This is a real pain!

Thanks in advance.