Hi There,
I don't think it will be a problem. The URL descriptions seem quite clear and they don't appear to be session id's or the such but descriptions of the product. Quick search despite it being in the Uk proved everyone else seems to leave the numbers at the start of the URL https://www.google.co.uk/?gws_rd=ssl#q=hc+grass+capsulas+duras+15-capsulas&btnK=Google+Search
My advice leave as is.
Hope this is helps!
Kind Regards
Neil