Miralax (polyethylene glycol) can i use with stool softener been taking 3 days no result ?

Yes: you can use Miralax (polyethylene glycol) with a stool softener, like Colace. If you haven't stooled for three days, you may want to consider taking a clean out dose of Miralax (polyethylene glycol), or having your doctor prescribe lactulose. In the meantime, consider taking Miralax (polyethylene glycol) twice a day, and/or adding an ounce of Milk of Magnesia. You should consult with your doctor about your intractable constipation.