Can you tell me what is the best chamomile tea for stress and anxiety(panic attacks)?

Chamomile tea: There are many good products, but for true anti-anxiety effect you will probably have to make it stronger than you do just to taste good. In my cabinet I have celestial seasonings chamomile tea. Also I have yogi teas: comforting chamomile, bedtime, and honey lavender stress relief. Gaia makes wonderful teas also. One last one (no chamomile in it, though) is yogi kava stress relief. Yum!