Not yet reviewed — this article is pending editorial review by Lyrea.
Citation noticeOur citation system is being overhauled
References and citation markers may currently be incomplete, mismatched, or incorrect. This system is being rebuilt and reviewed before the full site launch.
Dosage & Duration
Duration
Subjective Effects
Pharmacology
Dangerous
Highest riskThese combinations are considered extremely harmful and should always be avoided. Reactions to these drugs taken in combination are highly unpredictable and have a potential to cause death.
Unsafe
AvoidThere is considerable risk of physical harm when taking these combinations, they should be avoided where possible.
Caution
Use cautionThese combinations are not usually physically harmful, but may produce undesirable effects, such as physical discomfort or overstimulation. Extreme use may cause physical health issues. Synergistic effects may be unpredictable. Care should be taken when choosing to use this combination.
Tolerance
Harm Potential
History & Culture
Legality
References
Source Pages
Bluelight: (4-HO-McPT/25 mg) - First Time - A Mildly Active Dose- Bluelight: (4-HO-McPT/50 mg) - Second Time - Exploring a Novel Substitution
- Bluelight: 4-HO-McPT (60mg oral) - First Time - Peace and Quiet
- Bluelight: 4HO-McPT - 1st time 43mg insufflated - 'A lovely amicable compound'
- Bluelight: The Big & Dandy 4-HO-McPT Thread
Erowid Experience Report: 'A Mildly Active Dose' (exp109456)- Erowid Experience Report: 'Exploring a Novel Substitution' (exp110236)
- Erowid Experience Report: 'Peace and Quiet' (exp114963)
- Erowid: 4 Ho Mcpt.shtml
- Erowid: 4-HO-McPT Vault
TripSit: Drug Combinations Wiki
Wikipedia: 4-HO-McPT
Article Status
Step 1 · Automated synthesisAn autonomous workflow built by Josie Kins compiled this article's foundation from information published across the web.
- Step 2 · First-pass reviewPending
Not yet reviewed — this article is pending editorial review by Lyrea.
- Step 3 · Citation reviewPending
No one has reviewed this article's citations yet. That second pass checks each claim against the source it cites.
Recent changes7 human edits · latest
Times are UTCNewest first
24 January 2026
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Josie Kins · Updated the article · also 1,4-Butanediol, 1B-LSD, 1cP-AL-LAD and 573 more
Suggest an edit
Spotted a mistake, an outdated claim, or something missing from the 4-HO-McPT article? Send the editors a private note. Feedback lands in a moderation queue and is never shown on the site.
Wish to give generalised feedback? You can do so here.