For constipation, you can moxibe points such as Yu of the Large Intestine, Ashigaru and Zhigou.
The Large Intestine Yu is located in the spine, when the 4th lumbar vertebra under the spinous process, 1.5 inches away from the posterior midline. It treats abdominal pain, abdominal distension, diarrhea, intestinal tinnitus, constipation, dysentery, and strong pain in the lower back.
Foot Sanli is located on the lateral side of the lower leg, 3 inches below the calf’s nose, 1 transverse finger outside the anterior ridge of the tibia, on the line between calf’s nose and Xiexi. It is used for treating stomachache, vomiting, abdominal distension, diarrhea, dysentery, constipation, lower limb impotence paralysis (weakness, numbness and pain in the lower limbs), intestinal carbuncle (carbuncle occurring in the intestines and bowels, manifested by fever, pain in the right abdomen, and palpable lumps), etc.
Branchial groove is located in the posterior region of the forearm, 3 inches above the transverse stripe on the dorsal distal side of the wrist, the midpoint between the ulna and radius interspace. It is mainly used for treating deafness, tinnitus, raspy voice (sudden loss of voice), coercive and rib pain, constipation, scrofula (mainly refers to cervical lymph node tuberculosis), and so on.
In case of constipation it is recommended to seek medical attention. If moxibustion is needed, it is recommended to go to a professional medical institution.