For tree resins or tincture of white pine (Pinus strobus) needle, a typical dosage is around ¼ to ½ mL tincture (5-10 drops) at a time diluted in a bit of warm water. You can harvest resin from almost any species of true pine, but making resin tincture is a very messy task that's best done while you're still in good health—so if you don ....