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Sourcing · Regulatory

Why a compound being unapproved is not the same as being illegal to possess

LC
lu.cabreraTL220 Jun 2025#1

Why a compound being unapproved is not the same as being illegal to possess I have a specific reason for asking rather than idle curiosity, and the context is below.

Collecting what is known about compound being unapproved in one place, because it is currently spread across a category, two tag pages and a thread that is hard to find.

This is a summary rather than new work, and I have attributed each part to where I found it.

0 likes 13mo
FN
formulary_notesTL3Regular30 Jun 2025#2

Adding the measurement that the opening post says would settle it.

Regulatory positions change: a compound's status today might differ from its status a year from now. Citing a regulatory position is worth doing only with a date attached.

The general case is well covered; this is the awkward specific one.

21 likes 13mo
JB
j.bhattacharyaTL27 Jul 2025#3
formulary_notes, post #2: Adding the measurement that the opening post says would settle it. Regulatory positions change: a compound's status today might differ from its status a year from now. Citing a regulatory position is worth doing only with a date attached. The general case is well covered; this is the awkward specific one. Go to post

Agreed, and I will stop repeating the version of this I had been repeating.

5 likes in reply to #2 13mo
SC
s.chowdhuryTL3Regular13 Jul 2025#4

Two things can be true about compound being unapproved at once: the mechanism is plausible and the evidence for the size of the effect is thin. Most of the argument here is people defending the first against attacks on the second.

1 like 13mo
AN
a.nybergTL219 Jul 2025#5

The confident answers on compound being unapproved and the well-sourced answers are not the same answers, which is the most useful thing I have learned reading this category.

30 likes 12mo
QL
quiet_lurkerTL2Regular25 Jul 2025#6
lu.cabrera, post #1: Why a compound being unapproved is not the same as being illegal to possess I have a specific reason for asking rather than idle curiosity, and the context is below. Collecting what is known about compound being unapproved in one place, because it is currently spread across a category, two tag pages and a thread that is hard to find.… Go to post

Where a claim about legality is made here, the useful follow-up is which instrument it rests on. Most such claims turn out to rest on a forum post.

Not a conclusion. A place to stand while looking for one.

15 likes in reply to #1 12mo
SR
sa.rasmussenTL230 Jul 2025 · edited#7

Post #5 put the caveat in the right place and I want to underline it.

Research-use-only status is a legal classification, not a safety classification. It means the compound is sold for laboratory use and not for human consumption. The label does not establish whether the molecule is safe, efficacious, or toxic.

That is the shape of it. The detail is where I would expect to be corrected.

3 likes 12mo
NH
new_here_2026TL1Member5 Aug 2025#8

Compounding and pharmacy rules: some jurisdictions allow a pharmacy to compound a drug that is not on the market under specific conditions. The conditions are strict and vary by jurisdiction. Generalising from one country's rules to another's is unreliable.

0 likes 12mo
NS
n.silvaTL210 Aug 2025#9

Everything in post #5 holds. The case it does not cover is the one I have.

If you can confirm or contradict a position for your own region, please date the answer. An undated regional claim is the least useful thing in this category.

22 likes 12mo
SL
s.leclercTL4 Moderator15 Aug 2025#10
sa.rasmussen, post #7: Post #5 put the caveat in the right place and I want to underline it. Research-use-only status is a legal classification, not a safety classification. It means the compound is sold for laboratory use and not for human consumption. The label does not establish whether the molecule is safe, efficacious, or toxic. That is the shape of it.… Go to post

What would change my mind on compound being unapproved is a second dataset collected by someone with no stake in the first. Until then I hold it loosely and I would rather say so than pretend to more.

10 likes in reply to #7 11mo
LP
l.piresTL219 Aug 2025#11

Where I have landed on compound being unapproved, having got it wrong once in public: the direction is clear, the magnitude is not, and anyone quoting a precise magnitude has borrowed it from somewhere that did not measure it.

3 likes 11mo
HM
h.mensahTL224 Aug 2025#12

Nothing in this subcategory is legal advice, and the members who work in regulated environments are the most careful to say so.

That is all the detail I have. Someone else will have more.

10 likes 11mo
BD
b.demirTL229 Aug 2025 · edited#13

Post #10 answers the question as asked. The question underneath it is different.

Import restrictions vary by compound and by jurisdiction: what is a controlled substance in one place is legal to purchase in another. What you can import for personal use depends on your country's rules, not on where it is sold.

Anyone with a larger sample, please post it.

30 likes 11mo
SB
s.bruunTL22 Sep 2025#14
j.bhattacharya, post #3: Agreed, and I will stop repeating the version of this I had been repeating. Go to post

A regulator's public assessment report is usually the single best free source on a compound's evidence base, and it is almost never cited here.

0 likes in reply to #3 11mo
GR
g.rasmussenTL27 Sep 2025#15
n.silva, post #9: Everything in post #5 holds. The case it does not cover is the one I have. If you can confirm or contradict a position for your own region, please date the answer. An undated regional claim is the least useful thing in this category. Go to post

Understood, and I withdraw the assumption I opened with.

1 like in reply to #9 11mo
MP
mira.patelTL4 Admin11 Sep 2025#16

Post #12 put the caveat in the right place and I want to underline it.

Labelling and intended use: a compound sold as "research-use-only" does not change its pharmacology if ingested. It changes the legal status of the sale. The labelling tells you the intended use, not the actual use people make of it.

I have seen it go both ways, which is why I hedge.

6 likes 11mo
MO
m.onwukaTL215 Sep 2025#17

An indication approved for one age range does not extend to another, and paediatric extensions are separate decisions with separate evidence.

22 likes 10mo
OB
owen.bradyTL4 Moderator20 Sep 2025#18

Nobody has said the unglamorous part of compound being unapproved yet, so: most of the variation is explained by things that are boring to write about and easy to check.

0 likes 10mo
C
CSagredoTL3Regular24 Sep 2025#19
quiet_lurker, post #6: Where a claim about legality is made here, the useful follow-up is which instrument it rests on. Most such claims turn out to rest on a forum post. Not a conclusion. A place to stand while looking for one. Go to post

Picking up post #18: that is the part I would want checked first.

Preclinical versus clinical: compounds with strong preclinical data can fail in clinical trials. Compounds with no human data are being used on theoretical grounds. The regulatory position reflects this asymmetry.

Second-hand, so weight it accordingly.

0 likes in reply to #6 10mo
RM
r.molnarTL228 Sep 2025#20

On post #16 — agreed on the reasoning, with one qualification.

Compound being unapproved is one of those subjects where the general answer and the answer for a specific case diverge, and the thread will go in circles until someone says which one is being asked for.

3 likes 10mo
EN
electrolyte_notesTL2Regular2 Oct 2025#21
lu.cabrera, post #1: Why a compound being unapproved is not the same as being illegal to possess I have a specific reason for asking rather than idle curiosity, and the context is below. Collecting what is known about compound being unapproved in one place, because it is currently spread across a category, two tag pages and a thread that is hard to find.… Go to post

Adding what did not work for me on compound being unapproved, since the failures never get written up and they are half the useful information.

0 likes in reply to #1 10mo
YI
y.ibarraTL26 Oct 2025#22

Fair, and the limits you put on it are the part I will remember.

19 likes 10mo
NT
nl_translatorTL2Translator · NL10 Oct 2025#23

Worth separating two things that post #21 runs together.

Generic or biosimilar entry depends on patent and exclusivity positions that are jurisdiction-specific and are frequently misreported.

Marking that as an opinion rather than a finding.

8 likes 10mo
BD
b.dumitruTL214 Oct 2025#24
DB
d.bramleyTL3Regular18 Oct 2025#25

Approval versus licensing: a compound can be approved for a specific indication in one country and not approved at all in another. Tracking jurisdictional approval is tedious but necessary.

27 likes 9mo
VB
v.bruunTL222 Oct 2025#26

An observation about compound being unapproved that I cannot explain and am posting anyway, on the principle that unexplained observations are more useful public than private.

13 likes 9mo
CD
c.draganovTL1Member26 Oct 2025 · edited#27

On post #25 — agreed on the reasoning, with one qualification.

Two sentences on compound being unapproved and then I will stop, because the rest is speculation and the thread is better without mine.

What is documented is narrow. What is inferred from it is broad. The gap between them is where every argument here lives.

4 likes 9mo
VK
v.kjaerTL230 Oct 2025#28
s.chowdhury, post #4: Two things can be true about compound being unapproved at once: the mechanism is plausible and the evidence for the size of the effect is thin. Most of the argument here is people defending the first against attacks on the second. Go to post

Picking up post #25: that is the part I would want checked first.

A compound in a compounding pathway in one country and unavailable in another is a common situation and produces most of the confusion here.

Worth reading the earlier posts in this thread before acting on mine.

0 likes in reply to #4 9mo
EF
erratum_fileTL3Regular2 Nov 2025#29
nl_translator, post #23: Worth separating two things that post #21 runs together. Generic or biosimilar entry depends on patent and exclusivity positions that are jurisdiction-specific and are frequently misreported. Marking that as an opinion rather than a finding. Go to post

Answering the question post #25 raises rather than the one it answers.

I would be cautious about generalising from the compound being unapproved example above. It is a good example. It is one example.

0 likes in reply to #23 9mo
AC
a.cabreraTL26 Nov 2025#30
m.onwuka, post #17: An indication approved for one age range does not extend to another, and paediatric extensions are separate decisions with separate evidence. Go to post

Where a claim about legality is made here, the useful follow-up is which instrument it rests on. Most such claims turn out to rest on a forum post.

0 likes in reply to #17 9mo