... and have experienced really bad panic attacks on the third day of taking it. Is this normal? If so, does it ever go away? How long? I've also experienced shaking and anxiety when not in a panic attack, very dry mouth with extreme thirst, and nausea to the point of dry heaving off and on during the panic attacks. Also sweaty palms and feet. Anyone else experience any of this, and is it normal or something to be concerned about?