Tinctures are not new. Until cannabis was banned in 1937, tinctures were the primary type of cannabis medicines. Tinctures are essentially alcohol extractions of whole cannabis (usually the flowers and trim leaves). Tinctures contain all 80 of the essential cannabinoids instead of only one with Marinol. Some of the cannabinoids such as cannibidiol (CBD) actually reduce the psychoactive effects of THC while increasing the overall efficacy of the preparation.
The best way to use tinctures is sublingually (under the tongue). Titration or dose control is easily achieved by the number of drops a patient places under the tongue where the medicine is rapidly absorbed into the arterial system and is quickly transported to the brain and body. All a patient need do with tincture is use a few drops, wait for the desired medical effects, and either use more or stop as the situation indicates. Tinctures can be flavored for better taste. They are best stored in dark bottles. Since tinctures average some 75% ethanol there is little worry of bacterial or other biological contamination.