1. Over priced but I did buy it!
2. I haven't yet to have a major allergy episode to know if it works 100% for taking away sneezing and congestion. I did have a sneezing episode and used it....no more sneezing almost instantly.
3. I only purchase good quality so this does appear to have what I require.
4. Can't recommend it yet due to haven't used it for that long of a time.