The leaves of Salvia divinorum contain two diterpenes called salvinorin A and salvinorin B (also known as divinorin A and divinorin B). They also contain other substances that are not clearly identified.
Salvinorin A is the most potent natural psychedelic substance known. It is about 10 times more potent than psilocybin. Its chemical formula is C23H28O8 and it does not contain nitrogen, so it is not an alkaloid. At the pharmacological level it acts as a selective agonist for kappa opioid receptors, which differentiates it from other psychedelic compounds that act mainly on the serotonergic system, specifically binding to the 5HT2A receptors. Salvinorin A is therefore quite an unusual compound.
Doses of salvinorin A that produce psychoactive effects start at 150 micrograms (or millionths of a gram). Common doses are between 150 and 500 micrograms.
Dried S. divinorum can be found on the market, although its availability in the form of extracts is more common. These extracts are more potent than dried leaves, so a much smaller amount is required to achieve psychoactive effects. Fresh leaves are usually only found in places where S. divinorum is grown and are not usually available in other markets.
The traditional route of administration is usually the chewing of fresh or dried leaves, as well as the ingestion of leaf infusions. In current contexts in the western world, the most common route of administration is the smoking of extracts.
An approximate summary of the usual doses is as follows:
Smoked or vaporized route. Dosage of leaves
- Low dose: 0.25 grams
- Average dose: 0.5 grams
- High dose: 0.75 grams
Smoked or vaporized route. Dosage of 5x extract
- Low dose: 0.05 – 0.1 g
- Average dose: 0.08 – 0.15 g
- High dose: 0.01 – 0.025
Smoked or vaporized route. Dosage of Pure Salvinorin A
- Low dose: 75 – 100 μg (dose in micrograms, 1000 micrograms, ug = 1 milligram, mg)
- Average dose: 200 – 400 ug
- High dose: 400 – 500 ug
Sublingual/chewed route. Dosage of leaves
- Low dose: 10 g of fresh leaves / 2 g of dried leaves
- Average dose: 30 g of fresh leaves / 6 g of dry leaves
- High dose: 50 g of fresh leaves / 10 g of dried leaves
Oral route: infusion of crushed leaves (in pairs of leaves, traditional use)
- Low dose: less than 20 pairs (40 leaves)
- Average dose: from 20 to 60 pairs
- High dose: 60 to 80 pairs