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Sourcing · Regulatory · continued

Pharmaceutical compounding rules, summarised from primary sources posts 121–150

This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1.

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m.brobergTL2 Moderator4 Mar 2025#121

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.

17 likes 17mo
SL
s.leclercTL4 Moderator5 Mar 2025 · edited#122
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On post #118 — agreed on the reasoning, with one qualification.

Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather than quietly editing.

The correction was fair and I had been repeating something I had not checked carefully enough.

32 likes 17mo
AW
a.wikstromTL2 Moderator5 Mar 2025#123

Picking up post #120: that is the part I would want checked first.

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.

24 likes 17mo
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chromatogramTL45 Mar 2025#124
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t.dumitruTL2 Moderator5 Mar 2025#125

Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the kind that comes from remembering a figure instead of looking it up.

23 likes 17mo
EF
endo_fellow_rkTL3Endocrinology fellow5 Mar 2025#126

Off-label use and medical practice: clinicians can prescribe approved medications off-label under some circumstances. That is different from research-use-only compounds, which are not approved for any human use.

0 likes 17mo
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r.ekstromTL2 Moderator5 Mar 2025#127

This follows post #124 rather than contradicting it.

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.

1 like 17mo
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TL4_HalvorsenTL4Leader · Journal club5 Mar 2025#128
v.klausen, post #67: 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. Go to post

I read post #126 twice before replying, because I had assumed the opposite.

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.

6 likes in reply to #67 17mo
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h.lindqvistTL25 Mar 2025#129
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formulary_notesTL3Regular5 Mar 2025#130

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.

0 likes 17mo
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p.krastevTL2 Moderator5 Mar 2025#131
an.kirchner, post #95: 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. Go to post

Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather than quietly editing.

The correction was fair and I had been repeating something I had not checked carefully enough.

1 like in reply to #95 17mo
RV
r.venkatesanTL3Wiki editor5 Mar 2025#132
s.solberg, post #66: 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. Go to post

Why this category is maintained as documentation, not as recommendations: the goal is factual accuracy and sourcing, not endorsement of any specific regulatory position.

0 likes in reply to #66 17mo
KP
k.pereiraTL2 Moderator5 Mar 2025#133

Worth separating two things that post #129 runs together.

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.

23 likes 17mo
MM
maintenance_modeTL3Regular5 Mar 2025#134

post #133 is right about the mechanism and I think understates the practical bit.

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.

10 likes 17mo
RS
r.sobczakTL2 Moderator5 Mar 2025#135
f.haddad, post #112: 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. Go to post

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.

3 likes in reply to #112 17mo
RJ
r.jhannsdttirTL3Regular5 Mar 2025#136
Okafor, post #82: 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. Go to post

Picking up post #133: that is the part I would want checked first.

Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the kind that comes from remembering a figure instead of looking it up.

6 likes in reply to #82 17mo
NK
ni.kravchenkoTL2 Moderator5 Mar 2025#137

On post #133 — agreed on the reasoning, with one qualification.

Off-label use and medical practice: clinicians can prescribe approved medications off-label under some circumstances. That is different from research-use-only compounds, which are not approved for any human use.

1 like 17mo
IS
isotonic_sheetTL3Regular5 Mar 2025#138

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.

0 likes 17mo
TM
t.marchettiTL2 Moderator5 Mar 2025#139

I read post #137 twice before replying, because I had assumed the opposite.

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.

22 likes 17mo
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IHollingworthTL25 Mar 2025#140
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s.ivaturiTL2 Moderator5 Mar 2025#141
t.dumitru, post #125: Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the kind that comes from remembering a figure instead of looking it up. Go to post

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.

15 likes in reply to #125 17mo
CP
citation_peakTL3Regular5 Mar 2025#142

Coming back to post #140, because the follow-up matters more than the original answer.

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.

29 likes 17mo
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v.bruunTL2 Moderator5 Mar 2025 · edited#143

Why this category is maintained as documentation, not as recommendations: the goal is factual accuracy and sourcing, not endorsement of any specific regulatory position.

0 likes 17mo
KR
k.redgraveTL2Member5 Mar 2025#144
n.szabo, post #81: 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. Go to post

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.

5 likes in reply to #81 17mo
IG
i.grimaldiTL2 Moderator5 Mar 2025#145

This follows post #142 rather than contradicting it.

Primary documents matter: regulatory positions are published in official documents. Reading the regulatory agency's website directly is more reliable than reading a forum summary of it.

10 likes 17mo
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RidgewayTL3Regular5 Mar 2025#146

I read post #144 twice before replying, because I had assumed the opposite.

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.

22 likes 17mo
AC
a.cabreraTL2 Moderator6 Mar 2025#147

For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.

0 likes 17mo
EF
erratum_fileTL3Regular6 Mar 2025#148
n.vukovic, post #99: This follows post #96 rather than contradicting it. 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. Go to post

Off-label use and medical practice: clinicians can prescribe approved medications off-label under some circumstances. That is different from research-use-only compounds, which are not approved for any human use.

3 likes in reply to #99 17mo
IG
in.guerreroTL2 Moderator6 Mar 2025#149
s.poulsen, post #102: Off-label use and medical practice: clinicians can prescribe approved medications off-label under some circumstances. That is different from research-use-only compounds, which are not approved for any human use. Go to post

Picking up post #146: that is the part I would want checked first.

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.

28 likes in reply to #102 17mo
HN
h.nicolaidesTL3Regular6 Mar 2025#150
r.jhannsdttir, post #136: Picking up post #133: that is the part I would want checked first. Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the kind that comes from remembering a figure instead of looking it up. Go to post

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.

0 likes in reply to #136 17mo