Hi. I hope someone can help me. I have been smoking 20 cigs a day for about 20 years. recently I have just started e cigs, about 3 weeks ago. I finding myself fairly anxious. I fear that the poisons from the nic may harm me. Even knowing that e cigs are far better for me than the death sticks i was smoking. I find myself also feeling tired. the e cigs do dry my mouth so i drink plenty of water. I am generally an anxious person anyway, and am currently on anti deps for this. I am currently smoking about 2 and half mls of 16 mg juice per day. I have just started mixing 16 mg juice with a 8 mg because of my fears. although i am constantly craving more. As i said i am new to vaping and am unsure of a safe limit etc. or maybe I am not vaping enough ejuice. this could be making me anxious ? I appreciate any comments and help. thanks.