frostymoose t1_ivs5f3l wrote

Enzymes are generally too large to be absorbed orally and would likely be degraded before absorption if it were possible. For some conditions, like cystic fibrosis, enzymes are supplemented orally because they are for digestion and do not need to leave the GI tract.

In this case, the drug is administered intravenously, but some large molecules can also be given intramuscularly or subcutaneously.