Phenibut
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Also known as Phenibut, Fenibut, Phenybut, PhGABA
Fatal overdose may occur when gabapentinoids are combined with other depressants such as opiates, benzodiazepines, barbiturates, thienodiazepines, alcohol or other GABAergic substances.[1] It is strongly discouraged to combine these substances, particularly in common to heavy doses.
Addiction potential
moderately physically and psychologically addictive
Toxicity
low toxicity; potentially lethal when mixed with depressants like alcohol, benzodiazepines or opioids
Tolerance
full tolerance within a couple of days of continuous use; baseline after 7 - 14 days
Cross-tolerance
GABA
Oral
Route dataPsychonautWiki
| Threshold | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| 0.25 g | 0.5–1 g | 1–2 g | 2–3.5 g | 3.5 g+ |
04.375 g
LightCommonStrongHeavy
| Onset | 1.5–3 hours |
|---|---|
| Come-up | 1.5–3 hours |
| Peak | 3–4 hours |
| Offset | 4–6 hours |
| Total | 10–16 hours |
| After-effects | 6–24 hours |
OnsetCome-upPeakOffset
Plan when to take Phenibut — see where onset, peak and comedown land on the clock
Plan a dose of Phenibut
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Source: PsychonautWiki — Phenibut ↗
Fact-sheets from PsychonautWiki. Harm-reduction reference only — not medical advice.