4-FA Stats & Data

In comparison to other substituted amphetamines, 4-FA is particularly free of side effects such as nausea, high blood pressure, anxiety and an uncomfortable offset. In low doses, it is considered to be an extremely functional and effective nootropic for performing tasks or general productivity of any sort. At higher dosages, however, it becomes dysfunctional and recreational due to the intensity of its euphoria and stimulation.

Forked from Subjective Effect Documentation by Josie Kins, August 2015. Via dose.wiki (CC0).

The toxicity and long-term effects of recreational 4-FA use have only scarcely been studied because 4-FA has very little history of human usage. Anecdotal evidence, as well as several case reports, suggest there is a small to moderate individual health risk associated with the use of 4-FA. Among these, it appears there is an especially a high risk for acute cardiovascular toxicity. Some people in the Netherlands, only using a moderate dose, have died due to cardiac arrest or suffered severe brain damage due to a stroke. The mechanism of this acute toxicity is not yet known, but it seems as though the stroke starts off as an intense headache or even a migraine attack, that slowly worsens.

Effects aggregated from 45 experience reports (27 single-substance Erowid + 18 Bluelight)

Each bar is the share of reports mentioning the effect; its whisker, and the band on the rows below, is the 95% interval: where the share could plausibly be with other reports of the same kind.

Rows resting on fewer than 20 reports show a count (“3 of 7”) instead of a bar. Why 20?

Also reported in combinations. In the 30 4-FA reports where another drug was taken too, 2 (6.7%) mention hospital, emergency services or an overdose, 0 (0.0%) a seizure and 1 (3.3%) psychosis. In the 27 single-substance reports: 3.7%, 0.0% and 0.0%. These are not in the figures above: they cannot be put down to 4-FA alone, and a mention is not always something that happened to the writer.

Dose distribution from experience reports, one dose per report (the first listed). Doses above Q3 + 3×IQR, far above what people typically take, are left out of the median and range and listed under each route: most are real heavy doses or overdoses, not mistakes.

From 87 of 105 recorded dose entries: those that state a weight (mg, g or µg), in routes with at least five of them. Values above Q3 + 3×IQR, far above what people typically take, are left out; they can include real heavy doses and overdoses, not only mistakes.

Most co-occurring substances, as a share of all 57 reports filed under 4-FA; whiskers are 95% intervals

Most common forms and preparations, as a share of the 37 reports that give one; whiskers are 95% intervals

Dose per kg of body weight, one dose per report (the first listed), from reports giving a weight of 30–250 kg. Doses above Q3 + 3×IQR, far above what people typically take, are left out of the median and range and listed under each route.

Redosing behavior across 40 reports