Cusco, Peru · 11,150 ft · By clearance from two people
Bufo in Cusco
Fifteen minutes that most guests cannot describe afterwards. Two people have to agree before you are offered it, we use synthetic 5-MeO-DMT so no toad is milked, and at this altitude a borderline file is a no rather than a maybe.
From inhale to full onset.
Minutes, beginning to end.
People who must clear you, independently.
Toads involved, and no extra charge.
The shortest and most complete disappearance on offer anywhere
Bufo is the common name for 5-MeO-DMT, a compound found in the secretion of the Incilius alvarius toad and also produced synthetically. Vaporised and inhaled in a single breath, it takes hold in about fifteen seconds, peaks for roughly five minutes, and is essentially finished within twenty.
It is not a shorter ayahuasca. Where ayahuasca gives you five hours of material to work through, Bufo usually gives you nothing to hold at all. Most guests describe a complete loss of the sense of being a separate person, with no memory of the room, their name, or having taken anything. Often there is no visual content whatsoever.
That absence is exactly why it is hard to integrate, and why we say no to it more often than we say yes.
02 · Altitude
What 11,150 feet changes about this specific medicine
Every center in Cusco runs Bufo the same way a sea level center does and says nothing about the air. That is the gap in the published information, so this is the section we have written most carefully.
The honest counterweight
Altitude does not make Bufo more profound, more spiritual, or more anything. Nobody should choose a mountain center because they think thinner air deepens the experience — there is no evidence for that and we would not sell it.
What altitude does is narrow the medical margin, which is a cost, and put real hospitals minutes away, which is a benefit. On balance those roughly cancel out. Choose Cusco for the maestros, the city and the week — not for what the air supposedly does to a fifteen minute session.
The one medicine here with no connection to this city
Incilius alvarius lives in the Sonoran Desert, several thousand miles north of the Andes. It has no place in Quechua practice, none in Shipibo practice, and no history whatsoever in the Andes. We would rather write that plainly than let a mountain setting and a maloca imply a lineage that does not exist.
Milking stresses the animal, the practice is often repeated on the same individuals, and demand from retreat centers is now a documented pressure on wild populations. Some of what circulates has also travelled a long way in unknown conditions.
We use synthetically sourced 5-MeO-DMT. It is molecularly identical to the compound in the secretion, it can be dosed precisely rather than estimated, and it takes nothing from an animal that has no part in this tradition.
A question worth asking every center
Ask directly whether their Bufo is synthetic or milked, and note how precisely they answer. Vagueness here usually means toad. Be especially wary of any Peruvian center — highland or lowland — that frames it as an ancestral medicine of the region. It is not, anywhere in this country.
Two people have to agree, and either can say no
Every other medicine here is cleared by the physician alone. Bufo is the only one that needs a second signature, because the risks are not only medical. Neither person has to explain their decision to you, to the group, or to each other.
The physician, on medical grounds
5-MeO-DMT produces a sharp, brief rise in blood pressure and heart rate while breathing goes shallow. That is the primary concern, and at 11,150 feet it is assessed against a thinner-air baseline rather than a sea level one.
- Cardiac history and blood pressure
- Resting oxygen saturation on the morning itself
- Any serotonergic medication, including anything tapered for the week
- How your body handled seven days at altitude
- Your state on the actual morning, not on paper
Your integration lead, on everything else
They have spoken to you before you travelled and every day since. Their question is not whether you can survive it, but whether you will be able to do anything useful with it once you are home.
- How the four ceremonies actually landed
- Whether you are chasing intensity or following something
- What support exists for you in the month afterwards
- Whether waiting a year would serve you better
Being declined costs nothing
Bufo is not priced separately, so a no changes nothing about what you paid or what you receive. That is deliberate. A center that charges extra for its most intense medicine has a reason to find you eligible.
05 · A session, minute by minute
Twenty minutes, and most of it is the return
Timings vary and this is a description of the shape, not a promise about your experience. It is written from what guests report, because almost nobody remembers the middle of it.
Nothing is decided yet
After the fourth ceremony closes, the physician and your integration lead speak separately and then to each other. If either has a reservation, you are told in the morning and nothing further is discussed. Roughly half of the guests who ask are asked to wait.
A conversation, not a briefing
Your integration lead asks what you are looking for. If the answer sounds like chasing the biggest thing available, the session usually does not happen. This is the last point at which it can be called off, and it often is.
The room, and the position
You lie down on a mat before anything is administered, because standing is not possible during the peak. One facilitator sits directly beside you with a hand on your shoulder. The second handles the dose and watches the clock. Blood pressure and resting oxygen saturation are both taken.
One inhale, and then it is already happening
You hold the vapour for as long as you can. There is no gradual onset and no window in which to change your mind. Guests often describe a rushing sound and a sense of enormous acceleration before anything else registers.
The peak, which you will not remember
Most guests have no recollection of the room, their name, or having taken anything. Some are silent and still, others move, make sound, or weep. All of that is normal, the facilitator stays in contact, and breathing is watched continuously rather than glanced at.
Coming back, in pieces
The room reassembles gradually. Language returns last. Many guests are disoriented, tearful, or laughing, and some are unsettled by how completely they were gone. The facilitator stays beside you and says very little.
Sitting up, slowly
Blood pressure and saturation are taken again. Water, warmth, shade from the high sun, and no questions. Most guests do not want to speak for a while, and nobody asks them to.
Deliberately empty, and no travel
No airport run, no packing, no calls home. A session on your travel morning is refused, and so is one before a same-day flight out of Cusco. Your integration lead checks in during the afternoon and again the following morning before you leave.
You cannot stop it
Unlike Kambo, there is no removing anything once you have inhaled. Fifteen seconds after the breath you are past any point of decision. That fact is the reason for two clearances rather than one.
Why one to one
Group Bufo sessions exist elsewhere and we will not run them. A person at the peak cannot be safely attended alongside anyone else, and the presence of others changes what a facilitator can do.
Why never on a travel morning
Leaving here means a fifteen minute drive to Alejandro Velasco Astete and then a flight out at 11,150 feet. That is not a journey to begin disoriented, so the session sits the morning after the fourth ceremony with a full clear day behind it.
The days after
Some guests feel unusually settled, others feel scrambled for a week. Both are common. The first integration call is scheduled sooner for guests who took Bufo, and your lead knows to expect it.
What gets said about Bufo online, and what we will tell you
One session replaces years of therapy.
No. We make no medical claims and Bufo is not a treatment for anything. It is also the medicine least likely to hand you something usable, precisely because most people come back with no narrative at all.
It is the strongest psychedelic, so it is the most valuable.
Intensity is not depth. Guests who chase the strongest thing available are the ones our integration lead most often declines, and that is a judgement call rather than a medical one.
It is safe because it is over so quickly.
Duration is not safety. It causes a sharp rise in blood pressure and heart rate, deaths have been reported, and people can become physically unmanageable during the peak. Short and dangerous are perfectly compatible.
Doing it at altitude makes it more powerful.
There is no evidence for that and we will not sell it. Thinner air narrows the medical margin; it does not deepen the experience. Anyone marketing a mountain Bufo session as more profound is charging you for a physiological cost and calling it a feature.
Toad medicine is an ancient Andean tradition.
It is not, and we are in the Andes telling you so. Incilius alvarius lives in the Sonoran Desert and has no place in Quechua or Shipibo practice. Anyone framing it as ancestral to this region is inventing a heritage — and a maloca in a sacred valley makes that invention easier to sell, not truer.
You should do it right after ayahuasca while you are open.
No. That is the reasoning behind most of the difficult outcomes we hear about. We wait until the ayahuasca work is finished, hold it in the morning, and decline it entirely for guests who are still processing.
Everyone at the retreat will be doing it.
Almost nobody is. Most weeks it is one or two guests out of twelve, and some weeks nobody. Nobody is told who did and who did not, and there is no group session and no shared moment around it.
How Bufo differs from the other two
| Bufo | Ayahuasca | Kambo | |
|---|---|---|---|
| Onset | Fifteen seconds | Forty minutes | One to two minutes |
| Duration | Fifteen to twenty minutes | Five to six hours | Twenty to forty minutes |
| Psychoactive | Yes, completely | Yes, profoundly | No, fully conscious |
| Memory of it | Usually none of the peak | Detailed, often too detailed | Complete |
| What altitude adds | A narrower gate. Saturation checked on the morning | Starts night three, after two days acclimatising | Held back to the second half of the week |
| Where it comes from | Synthetic. The species is Sonoran, not Andean | Cooked in the lowlands, brought up, logged by batch | A lowland Amazonian frog |
| Can you stop it | No, not after the inhale | No, you ride it out | Yes, points removed |
| Setting | One to one, two facilitators | Group of twelve, two maestros | One to one, one practitioner |
| Who clears it | Physician and integration lead, independently | The physician | The physician |
| First visit | Usually advised to wait | Yes, this is the week | Commonly, if cleared |
08 · Screening
The narrowest gate we operate
Beyond the two clearances, this is the medical picture. Nothing here is settled in advance from your application alone, because how you actually moved through a week at altitude matters as much as your file does.
Absolute stops
- Any cardiac condition or arrhythmia
- Uncontrolled hypertension
- Diagnosed schizophrenia or bipolar I
- Epilepsy or seizure history
- Significant respiratory disease, including COPD and poorly controlled asthma
- Pregnancy or breastfeeding
- Any current MAOI
- A difficult or destabilising week in ceremony
Reviewed on the morning
- Resting oxygen saturation, measured that morning
- Blood pressure taken that morning, not on paper
- Any serotonergic medication, including one tapered for the week
- Acetazolamide or other altitude medication
- Sleep across the previous seventy two hours
- How the fourth ceremony went specifically
- Whether you are travelling that day
How we run it safely
- Synthetic 5-MeO-DMT, precisely dosed
- Lying down before administration, always
- Two facilitators, one in physical contact throughout
- Blood pressure and saturation before and after
- Oxygen on hand in the room
- Daylight, morning, never at night or in a group
- Refused on the morning if anything is off
Serotonin syndrome
5-MeO-DMT combined with SSRIs, SNRIs, MAOIs or lithium carries a genuine risk of serotonin syndrome. If you tapered for the retreat, that taper is still relevant on the last morning, and the physician accounts for how long you have been off it.
Not medical advice
These lists are not exhaustive and nothing on this page is medical advice. Bufo is the medicine we most often decline, and being declined is a normal outcome rather than a failure of any kind.
Most weeks, one or two guests out of twelve
And some weeks nobody at all. If you are reading this page before your first retreat and already know you want it, that on its own is usually a reason we will suggest waiting. The guests who do best with Bufo tend to be the ones who were not particularly seeking it.
Nothing is lost by waiting. Returning guests are the majority of the people we clear, and a year of integration between the two is usually what makes the second one land.
Guests we tend to clear
- Returning, with a settled first week behind them
- Medically straightforward, off serotonergic medication for a long time
- Acclimatised comfortably and had a steady week
- Have real support at home for the month after
- Asked once, quietly, and accepted a maybe
Guests we ask to wait
- First visit, in almost every case
- Anyone whose fourth ceremony was difficult
- Anyone who struggled with the altitude all week
- Recently tapered off an SSRI or SNRI
- Flying out of Cusco the same day
- Anyone who raises it repeatedly during the week
Included in the week
No extra charge, and never sold
Bufo is part of the $5,800 seven night retreat for guests both leads clear. It is not sold, not upgraded to, and not discounted if declined. A center that charges separately for its most intense medicine has a financial reason to find you eligible, and we would rather not have one.
It is never suggested to a guest who did not raise it, and a no costs you nothing at all.
10 · Questions
About Bufo in Cusco
How long does it last?
Does altitude change how you run Bufo?
Is your Bufo from a toad?
Is Bufo a traditional Andean medicine?
Why do you decline so many people?
Is it dangerous?
Can I stop it once it starts?
What if I do not remember anything?
Can I do it and fly home the same day?
Does it cost extra?
No charge to apply · reviewed within 48 hours
Come for the ceremonies. Let Bufo be a maybe.
One application covers all three medicines. Bufo is decided at the end of the week by two people who will have spent seven days with you, not by a form filled in months earlier. Nothing is charged either way, and a no costs you nothing at all.