Is there a known rate at which dmt is uptaken from the vapor by your lungs?

example: thc is absorbed >90% in 2 seconds with a maximum/deep inhail.

example: nitrous oxide is absorbed so slowly that the same lung full of gas can be inhailed many times while still leaving mostly n2o in the baloon(albeit lower o2 levels)

Example: salvia has a slow uptake.


i ask because i would like to know the best amount of time to hold a hit for. mathmatical maximization of dmt consumed/time is required.

if the rate is fast, smaller shorter hits(less time held) would be best. with thc lets say you have 100mg and 10 seconds. 5 2 second hits of 20mg each would yield ~90mg absorbed. where as 2 hits in 10sec would yield ~39mg absorbed.

now it doesn't matter with pot, but with a comeup like dmt it does. kind of.

From personal experience, I can say that a dose inhaled in a single hit and held “for as long as possible” is the best technique to maximize absorption. If a dose is held for about 20 seconds, there is little if any vapor exhaled, suggesting near 100% absorption.

Keep in mind that DMT is metabolized very quickly, and I think that the metabolization rate is not linear (for example, a small dose is metabolized more than twice as fast as a dose twice as large). With multiple hits, you need to hold the hit in, then exhale, then take a breath or two, ending with an exhalation all before taking another hit. During this time, the previous hit is already being metabolized.

An extreme example I gave in another thread was this: Consume a 30mg dose in 30 hits. Let’s say it takes 2 seconds to inhale a 1mg dose, then it is held for 5 seconds, then exhaled in 1 second. Occasionally an extra breath is taken, maybe a pause now and then to prevent hyperventilation, so the entire 30mg dose administration will take somewhere between 4 and 5 minutes. In this extreme example, it’s unlikely you’d feel any effects at all.

At the other extreme is a single rapid inhalation. This is easily achievable even for someone with average lung capacity when proper equipment and technique is used. With a GVG and a thin metal mesh disc, an entire 30mg dose will vaporize in a second or two. The dose can then be held comfortably for 20 seconds or so. The effects of such rapid administration are extreme, and I actually wouldn’t recommend this technique for inexperienced users.

Its never been properly studied. But yea holding in as long as you can seems to work best. Also another approach is to blow your hit into a balloon and reinhale. But don't forget to inhale real air

Does the balloon reinhalation method work for DMT?

I've always been surprised to find people saying 10-20 seconds is all you need... SWIM has done 3 back-to-back, massive hits with a GVG held to a count of 60 each time, and sometimes there is still some exhaled. She can tell that she is absorbing DMT (based on rising tone, etc) all the way up to the 60 mark. She needs a lot, though, so maybe that is unusual?

I'm really interested in this topic.