And some notes on interaction (Some taken from
Trout's Notes on Some Simple Tryptamines 2nd edition, also some of my own personal commentary)
5-MeO-DMT + Harmalas - (Harmalas will significantly increase potency of 5-MeO-DMT. 40-60mg harmaline + 10mg 5-MeO-DMT orally is equivalent to 30-35mg oral 5-MeO-DMT by itself or 10 mg intranasally (see
Ott 2001 Note that 35mg by itself was not active dosage to shulgin but was for ott)
LSD + Psilocybin - Strong synergy with Psilocybe mushrooms.
LSD or Mushrooms + Harmalas - Strong synergy/potentiation, first timers should take very small doses to see how they react and only raise gradually
Pharmaceutical MAOIs (daily predosing for days/weeks) + LSD - The MAOIs will significantly diminish or even block the effects of LSD
MAOIs + MDMA = VERY DANGEROUS! Potentially fatal (even changa with MDMA is really NOT recommended.
Here's one discussion)
MDMA + SSRI = VERY DANGEROUS! Potentially fatal
Mushrooms + DMT - When DMT is smoked at the peak or post-peak of mushrooms, there is an extreme synergy that can make it for an incredible experience that can take one very very far! For some this is their favorite combo, for others not
LSD + DMT - Same as above. For some people they feel its better to smoke at the comedown, or some people dont like it at all because they feel LSD acts as an anchor and holds one down, preventing breakthrough
Salvia + DMT - Effects are dramatic but its not clear if there is synergy or more like additive effects.
Piracetam + Psychedelics/Amphetamines - Trout notes that justin case, toad and others have reported substantial increase in potency of phenetylamines (such as MDMA, mescaline, amphetamines) and suggest dosage is halved. Possible potentiation of tryptamines too. There is very little data on the pharmacodynamics and toxicity of this mixture, so care is adviced, even though due to low toxicity of tryptamines and piracetam by itself, its possible the toxicity of mixture is also low.
Ketamine + DMT/5-MeO-DMT/tryptamines - Some people suggest ketamine may smooth the entry int tryptamine space and some report incredible experiences. Special care is needed with ketamine due to it's potentially addictive nature and due to being dissociative/anaesthetic and increased risks of physical accidents. Justin Case's best results have been reported when k dose is kept low and tryptamine dose is solid but not excessive.
Nitrous oxide + DMT - When nitrous is inhaled immediately after dmt, its reported by some people to significantly enhance the experience.
Chlorpromazine + Psychedelics - Chlorpromazine substantially diminishes the effects of DMT, LSD and other similar molecules (see Moore et al 1975, Shah & Hedden 1978)
Benzodiazepines can be reduce an agitated rough/unpleasant trip but are generally not recommended if other non-invasive supportive care-taking can be done, because these substances will dull the consciousness and might prevent the tripper from learning from the hard experience and integrating it.