How soon should my dissolvable stitches go away?

6-12 weeks. Most "dissolvable" sutures are made of polyglycolic acid...Takes 2-3 months to dissolve.

It depends! Some resorbable sutures dissolve in as little as 3-5 days; some sutures take as long as 3 months to dissolve. Most sutures, however, dissolve in 1-3 weeks.