What happens to concerta strength lies when it is a year and a half old. Does it increas o decrease?

The chances are that as most pharmacy do Is not put the real experation date one the bottle if you look and see the fill date and the expiry date is 1 year from that it is a computer overide Concerta has a much longer shelf life than 1.5 years we don't have to use the real date because as long as we don't go over the real date. This is legal because the customer should have used them up in a month. I can 95% assure you this is the case.Don't worry dad. BUT PUT THEM WHERE YOUR KID CAN'T GET TO THEM sorry it took this long for an answer BUT EVEN if these really were out of date they would be weaker on Concerta. some pill like this would not even be that much weaker.because of the special coating on the tablet. Use more caution.