Which of the following is a common remedy for constipation?

Senna-leaf is a well-known natural remedy used to relieve constipation. It contains compounds called sennosides, which stimulate the lining of the intestines and promote bowel movements. This natural laxative effect can be particularly helpful for individuals experiencing occasional constipation.

In the context of the other options, gugel mugel, swamp root, and spider webs do not have the same recognized efficacy or traditional use as remedies for constipation. Gugel mugel is a bit more obscure and is not widely established in herbal medicine, while swamp root, although sometimes referenced in folk medicine, does not have a strong clinical backing for treating constipation. Spider webs have no medicinal properties related to digestive health and are not recognized in any reputable medical context as a remedy for constipation.