Which drug is derived from a natural source and may be prescribed for the treatment of osteoporosis?

Teriparatide and  

Calcitonin

Explanation:

Teriparatide drug is extracted from the naturally occurring parathyroid hormone and is also approved by the FDA. This anabolic is taken through injection to promote the growth of bones and increase its density as well.

Along with Teriparatide, Calcitonin is a natural hromone produced by thyroid and is given to patient with osteoporosis. Calcitonin increases the bone mass and density.

trachea, alveoli, lung capillaries, arteries