Effect of Vitamin D on Skeletal Muscle Function and Qol in Patients With Chronic Intestinal Failure/Insufficiency
Eligible patients were randomized into two groups: Vitamin D group and Control group. Control group: routine treatment only, no additional vitamin D intervention therapy. Vitamin D group: In addition to the conventional treatment, additional intramuscular injection of vitamin D2 was given once every two weeks, each dose of 600,000 units, and the treatment lasted for 12 weeks.

The primary and secondary outcomes will be collected.
- EligibilityCriteria: Inclusion Criteria:  Informed consent was obtained from patients or their legal representatives for participation in this study Patients 18 years of age or older, under 70 years of age, chronic intestinal failure/insufficiency Serum 25(OH)D level < 30.0 ng/ml Vital signs are stable  Exclusion Criteria:  Those who did not meet the inclusion criteria, or who were deemed unfit by their physician to participate in this study Primary hypothyroidism or parathyroidism Patients suffering from allergic diseases, are allergic, have a history of drug sensitivity similar to the structure of the study drug Patients with primary diabetes Patients with mental illness, inability to cooperate or consciousness disorders Patients with contraindications of experimental drugs Patients with a suspected or confirmed history of substance abuse Immune deficiency, use of immunosuppressants and hormones Pregnant and lactating women Have taken any vitamin D supplements in the last 6 months Have taken any medication in the last 6 months that affects vitamin D metabolism (e.g., phenytoin, phenobarbital, rifampicin) Patients who participated in a drug trial (including the drug in the trial) within 3 months before the trial Sponsors or investigators directly involved in the trial or their family members The researcher believes that there is any reason not to be accepted - HealthyVolunteers: No - Gender: All - MinimumAge: 18 Years - MaximumAge: 70 Years - StdAgeList: Adult, Older Adult