I, along with a few friends, have sampled this compound, obtained from a trusted source. We didn't go about things scientifically, or even with the intent of sharing our experiences with others...We just wanted to get high.
AH-7921
Encyclopedic
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 2 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 19 combo interactions documented
- classified Research-chemical
Encyclopedic
Typical encyclopedia coverage. Cross-reference for important decisions.
- 2 corroborating sources
- 1 ROA with full dose ladder
- duration data present
- 19 combo interactions documented
- classified Research-chemical
Aliases: ah7921
Summary
Opioid analgesic that is selective for the ΞΌ-opioid receptor. It has around 80% the potency of Morphine when taken orally.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 5-10mg | 10-25mg | 25mg | 25mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Peak |
|---|---|---|
| Oral | 15-45 min | 6-8 hrs |
Effect Profile
6 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Weighted by importance: core (×3), major (×2), minor (×1)
Opioid
6.3
Strong
6/10
Strong euphoria with moderate itching/nausea, mild pain relief, low sedation
Euphoria / Warmth
×3
10
physical euphoria
euphoria
cognitive euphoria
mood lift
Analgesia
×2
4
analgesia
Sedation / Relaxation
×1
3
sedation
Itching / Nausea
×1
7
nausea
constipation
dry mouth
Based on reports from:
Tolerance
Build-up
develops within days of regular use; analgesic tolerance faster than respiratory depression tolerance
Reset
7β14 days for partial reset; full reset may take weeks β tolerance loss greatly increases overdose risk
Tolerance Decay
Full tolerance
1d
Half tolerance
21d
Baseline
~35d
Acute tolerance: develops within a single session β the reset numbers above apply after sustained heavy use, not after one binge. Within-session tachyphylaxis usually resets largely overnight.
Effects
Aggregated from 6 Erowid experience reports
Positive Effects 3
Euphoria
66.7%
70%
Sedation
50.0%
70%
Pain Relief
50.0%
70%
Adverse Effects 1
Nausea
50.0%
70%
Combinations
Cross-Check AH-7921 with another substanceCommunity Trip Reports
Anecdotal first-person accounts from Reddit, Erowid, and Bluelight. Click a source to expand. Reports are harm-reduction context, not medical guidance.
Erowid 5 reports 2 neutral 3 cautionary visit
I (P) and a friend (B) have low tolerance to opiates, with previous experience using Oxycodone, Dihydrocodeine, Codeine and Fentanyl. Setting was a party with a small number of friends. We received 1 gram of AH-7921 (CAS number 41804-96-0) from a reputable european vendor.
I am recollecting this from a year-old memory so elements of timing may be foggy. To be clear I was not the subject of this experience. This experience took place during a 3.5 month long study abroad trip in a Chinese-speaking city (I do not speak more than a few words of Chinese).
Background: IΒm a research chemist Β been interested in opiates/opioids since college. I find they greatly improve my mood and relieve anxiety. IΒve been a steady user (almost daily) of codeine (oral, up to 200 mg at a time, 400 mg a day) for almost a year, although tolerance is catching up with me.
I received this from a reputable lab with all the independent lab testing done before any consuming was done. This is the base form and the HCL form will be tested in a few weeks. 10mg vaped (do not try putting base up your nose!) - Very relaxing and pleasant but nothing special.
Bluelight 3 threads 3 neutral visit
Just thought I'd write up a trip report since this chemical seems to be pretty rare. Hopefully someone will find it useful. BACKGROUND I was able to procure a couple grams of this rare material from a trusted friend and was stoked to try it.
Total doses: 160mg (in individual weighing 130lbs and 170mg in individual weighing 200lbs) I (P) and a friend (B) have low tolerance to opiates, with previous experience using Oxycodone, Dihydrocodeine, Codeine and Fentanyl. Setting was a party with a small number of friends.
AH-7921 - again, sorry for the coldness Iβve weighted 2 doses, 50mg and 50mg. One went up my bum, 5ml of water (everything dissolved great, unlike my previous sort, which was HCl salt by the way), very irritating and again - mind you, Iβm experienced, stuff doesnβt randomly irritate me down there so I know what Iβm tal...
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