If you've had too much weight in the drawers and the bottom is thin veneer, your going to have to probably have a new piece cut and replace it. If its not too bad, you might try moistening the bottom of the drawer with a warm damp towel, and when you can bend it put a small brace out of 1/2" wood trim in middle.
The piece in the bottom of the drawer should slide out, when it does you can take it to home depot or some place like that and have another one made but different material a little stronger, but be careful its not to thick as to not to fit back in the slides
This happened to me once with one of my kids chest of drawers. I actually just turned it over and slid it back into the grooves and it straightened itself out once I put the close back in the drawer and told the child to keep the books out of the drawer. Cheap fix and worth a try!
Are the drawer bottoms sagging? If so, you may need to either put in a support piece or replace the entire bottom of the drawer.
Try putting some new elastic in. Or if its drawers in furniture there are several items in DIY stores or Amazon.
If you've had too much weight in the drawers and the bottom is thin veneer, your going to have to probably have a new piece cut and replace it. If its not too bad, you might try moistening the bottom of the drawer with a warm damp towel, and when you can bend it put a small brace out of 1/2" wood trim in middle.
The piece in the bottom of the drawer should slide out, when it does you can take it to home depot or some place like that and have another one made but different material a little stronger, but be careful its not to thick as to not to fit back in the slides
http://warfieldfamily.com/2015/03/how-we-reinforced-our-ikea-drawers/
https://jewelsathome.com/2012/06/03/how-to-fix-sagging-drawer-bottoms/
WELL , YOU CAN GO TO WALMART AND GET SOME SUSPENDERS......HA ,,,JUST A LITTLE FUNNIN
This happened to me once with one of my kids chest of drawers. I actually just turned it over and slid it back into the grooves and it straightened itself out once I put the close back in the drawer and told the child to keep the books out of the drawer. Cheap fix and worth a try!
Thank you they have had some weight will try out your suggestion
its furniture thanks for your response
thank you for the web sites - very useful
thanks for all the suggestions they were instructive and fun to read especially the
elastic/suspenders ones - it actually was for furniture