How can we assist?

Q1: How does it work?
Q2: Why inhale melatonin?
Q3: How much melatonin is there per inhale?
Q4: Is it an e-cigarette or tobacco product?
Q5: What's in it?
Q6: What's not in it?
Q7: How long does it last?
Q8: How do I know it has run out/died?