Name some endocrine drugs that are derived from animal sources

The answer to this question would be: thyroxine and insulin from pig

Pig is a mammal that was frequently used in medical field. Some hormone like insulin was produced by pigs and used to treat diabetes patient before another method was found. Hypothyroid patient also can get pig thyroxine hormone to treat their deficiency of thyroid hormone.

That is true! many fish species traveled to the u.s. because of it.

You need to give use the answers