Recently I bought vaporizer and I've read a lot websites claiming there are health benefits from vaporizing herbs like damiana, eucalyptus, lavender, peppermint, etc.
Are there any scientific study on that?
I've only found a few that covers marijuana vaporization but none of other herbs.
I would be wary of routine ingestion of eucalyptus or lavender. Both are pretty potent irritants to fragile tissue and should not be overdone. Lung tissue is sensitive.<p>A nebuliser might be overdoing it. A water vapour misting machine with a few drops? No biggie.<p>Vaporising trivially alters chemicals because it changes the surface area to volume ratio. Higher surface area makes them more reactive per unit volume. They penetrate airways further because smaller, and are more likely to be absorbed.<p>Some conditions such as asthma can be made worse by irritants. You may feel better short term but do harm.<p>Yes.. my mum used to smear Vicks menthol on my nostrils too..
I once smoked mullein (verbascum thapsis) rolled like a cigarette. I was surprised how light and soothing the smoke was. It is said to act as an expectorant (helps you cough up gunk) and, topically, is soothing to skin.<p>I think that would be a good candidate for vaporization. Maybe you could get the expectorant effect without taking in carcinogenic smoke.