For people with very low blood levels of vitamin D, where high-dose oral supplements may be too slow or ineffective.

In people who have trouble absorbing nutrients through the digestive tract, such as those with: Celiac disease, Crohn’s disease, Bariatric surgery, & Chronic pancreatitis

Helps in the prevention and treatment of: Osteoporosis, Osteomalacia (softening of the bones), Rickets (in children)

In CKD patients, the kidneys can't convert vitamin D to its active form properly. Injections help manage calcium and phosphate levels to prevent bone problems.

Some doctors use it as an adjunct therapy for conditions like: Multiple sclerosis (MS), Rheumatoid arthritis, Psoriasis

Especially in older adults, improving vitamin D levels can help with muscle function and reduce falls