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Salvia

Nicknames: Ska pastora, sage of the diviners, Maria Pastora, Sally-D, Magic Mint
Last reviewed: October 2026

Pharmacology

The main active chemical component of Salvia Divinorum is salvinorin A, a naturally occurring neoclerodane diterpene. Unlike most classical hallucinogens, salvinorin A contains no nitrogen and does not produce its effects primarily through the serotonin 5-HT2A receptor.

Salvinorin A is a highly potent and selective κ-opioid receptor (KOR) agonist. KORs are part of the brain's endogenous opioid system and are normally activated by naturally occurring peptides called dynorphins. Activation of KORs alters signalling in several brain regions involved in perception, mood, reward and sensory integration. This is thought to account for much of salvinorin A's unusual combination of hallucination, dissociation, changes in body awareness and alterations in the perception of time and space.

This makes salvinorin A pharmacologically different from drugs such as LSD and psilocybin, which primarily produce their psychedelic effects through activation of the serotonin 5-HT2A receptor. Salvinorin A can therefore produce a very intense altered state without directly activating the principal receptor responsible for the effects of classical serotonergic psychedelics.

Salvinorin A is also unusual among opioid receptor agonists because it is non nitrogenous and produces a markedly different subjective effect from conventional opioid drugs such as morphine or heroin. It should not therefore be assumed that because salvinorin A acts at an opioid receptor it will produce typical opioid effects such as euphoria, analgesia or respiratory depression.

When inhaled, salvinorin A is absorbed very rapidly through the lungs and reaches the brain quickly. Its effects can begin within seconds, peak within a few minutes and largely resolve within around 30 minutes. It is also rapidly metabolised, including conversion to the inactive metabolite salvinorin B, which contributes to its short duration of action. Swallowed salvinorin A has very poor oral activity because it is rapidly metabolised in the gastrointestinal system; absorption through the mouth and lungs is much more effective.

The short duration should not be interpreted as meaning that the experience is mild. Salvinorin A can produce profound and abrupt alterations in perception, body awareness and behaviour, including intense dissociation, loss of awareness of one's surroundings and temporary inability to control movement. These intense short hallucinations may be particularly vivid, unexplainable, colourful or dreamlike but also intense and distressing. Once the effects have ended it’s common for users to feel tired, dizzy and not remember details of the experience.

Research into salvinorin A is also of scientific interest because it provides a way of studying the KOR/dynorphin system and consciousness without relying on the serotonergic mechanisms involved in classical psychedelics. A number of synthetic salvinorin analogues have subsequently been developed to investigate KOR pharmacology and possible therapeutic applications, although these remain experimental.

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