Do you take it straight or mix it with water? I take all my tinctures straight from the dropper to my mouth, except for the Cayenne and Brain Formula tinctures. They are way too hot to take directly from the dropper lol! You can mix the tinctures with water or juice.
Do you take it on an empty stomach or does it not matter. If you do take it on an empty stomach, how long must you wait before eating? It doesn't matter unless you've got an issue with the alcohol. If you have margarita on an empty stomach you'll feel it more than if you drink it will food in your system. Most of the time, I take my tinctures on an empty stomach but I really don't even think about that aspect of it. I'd say that tinctures assimilate faster on an empty stomach when they aren't competing with other things in your system but you're still getting the goodness even if you take them with food in your system. They'll still assimilate.
Do you mix the 5 drops of Lobelia tincture right in with the Lung/bronchial Tincture or take it separately? In the case of the Lung/Bronchial and Lobelia, I'd probably put them both in a shot glass together, with or without water or juice.
Everyone does things differently. I say whatever is easiest for you is the way to do it, no need to make it complicated ;-)