I understand how frustrating and uncomfortable it must be to deal with constipation for eight days, especially when Dulcoflex (bisacodyl) isn't bringing relief. Sometimes, sudden constipation can happen due to subtle changes in hydration, activity, or gut motility, even if your diet seems normal. When constipation lasts this long, the stool can become dry and hard, making stimulant laxatives like Dulcoflex less effective on their own. Since it has been over a week, I highly recommend speaking with a doctor. They can safely evaluate you and recommend more suitable options, such as osmotic laxatives, to help get things moving comfortably again.