http://www.seredyn.com/formula.html
The ingredients are known to be calming, but everyone is different.
The amino acid taurine is very calming, too. I use it quite regularly, and it never fails to relieve my anxiety, and coincidentally, by asthma symptoms.
Magnesium is calming.
Niacinamide is calming.
There are many nutritional aspects to coping with anxiety.
Lar