Which of the following medications should be dispensed and stored in the manufacturer's original container?

Duloxetine, an antidepressant, is typically stable and can be stored in various containers as long as they are kept in a dry environment. While it is important to keep medications in their original packaging for identification purposes, it is not as critical for stability as it is for nitroglycerin.

Calcium carbonate is generally stable and does not have the same sensitivity to light or moisture as nitroglycerin. Although it is advisable to keep medications in their original packaging for safety and identification, these tablets can be stored in alternative containers without significant risk of degradation.

Hyoscyamine does not require storage in the original container as it is not as affected by environmental factors as nitroglycerin. While it is beneficial to maintain the original packaging for proper labeling and instructions, the stability of hyoscyamine does not necessitate it.