It goes without saying that allergy eye drops have unique ingredients in them that the regular drops don't. A lot of people don't know what these ingredients are in the eye drops that make it work the way it does.

You will find that most of the time the ingredients might vary depending on what you get but here is a list of the most common ones (these are found in a popular allergy eye drop called Similasan):

- Apis HPUS 6X
- Sabadilla HPUS 6x
- Euphrasia HPUS 6X

There are also inactive ingredients:

- Purified Water
- Sodium Chloride 0.9%
- Sodium Silver Chloride Complex 0.001%

It goes without saying that almost all allergy drops will have purified water in them but the source of the water will vary. If you can not find what kind of drop your doctor told you to get chances are you can get it online.