We visited this museum in our Cluj visit. While the mueum itself is small (a couple of rooms and a basement) the real interesting part is the guide and the stories he tells. The guide we had was able to explain much about the various jars and artefacts in the museum with wonderful little stories and anecdotes. Some of the drugs made in old ages were of much more help to the pharmacist than to the patient :-)
The basement contains old tools and "lab equipment" used to make the drugs.
We recommend this place if you have an hour or two in Cluj.