Dose range

A dose range is the documented span between the smallest amount at which a substance produces its characteristic effect and the upper limit described for a given route of administration. It is compiled from research literature, clinical reports, and systematic user data, and expressed as tiers — typically threshold, light, common, strong, and heavy — so that any measured amount can be placed within a rough context of what has been reported.

Dose ranges exist because the same substance at different quantities can produce qualitatively different experiences. A threshold amount may produce subtle effects, while multiples of that amount may produce effects that are difficult to manage or physiologically dangerous. Having a documented reference makes it possible to situate an intended quantity against a broader record of reported outcomes.

How it is done

Consulting a dose range means identifying the substance and route, then measuring the intended quantity on a precision scale and comparing it to the published tier for that route. Different routes carry different dose ranges for the same substance because bioavailability — the fraction of a dose that reaches systemic circulation — varies substantially across oral, inhaled, insufflated, and other methods.

The tiers in a range are population summaries: they describe where the majority of reported responses cluster, not where an individual's response will fall. They are read as reference bands, not targets. A dose in the common tier reflects what was commonly taken and reported in the underlying sources; it does not describe what is appropriate or predictable for any particular person.

What it cannot tell you

A dose range does not establish what is safe, sufficient, or well-tolerated for an individual. The most consequential gap is tolerance: for someone with substantial prior use, a dose in the strong tier may produce effects similar to what a naive user experiences in the light tier, and vice versa. The range reflects naive-to-moderate population experience unless otherwise stated, and that context is rarely visible when a number is read in isolation.

It also cannot account for purity. A dose range assumes the substance is what it appears to be, present at close to full concentration. When a sample contains adulterants, cutting agents, or a different compound entirely, the number on the scale no longer maps to the reported tier in any reliable way. A dose that reads as light on a scale may deliver a heavy or unknown load depending on what is actually in the sample.

Finally, individual physiology — body composition, genetics, liver enzyme activity, concurrent medications, and recent food intake — shifts where a given amount lands. Two people taking the same measured quantity by the same route can have markedly different responses. The dose range describes the distribution across a population; it does not predict the position of a specific person within that distribution.