The Mullein off OzBongs tastes absolutely dreadful so I wouldn't actually recommend it personally I think it destroys a good bud, stick with tobacco if you mix you weed brother. When we're talking about soothing our throats here, smoking anything, no matter what it is, isn't going to 'help' mullein might be easier on the lungs than tobacco, but in the long run, like I said, is it really worth it? Oh also, try and stick to a good brand of Tobacco, I live in Australia so I tend to smoke Port Royal Rum and Wine, or Champian Ruby