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Safety · Contraindications · continued

Personal or family history of medullary thyroid carcinoma — what changed since posts 31–60

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

EM
e.mwangiTL27 May 2026#31

Where labelling has changed, the change is dated and public, and citing the current version is the whole of the discipline.

I have said this before in a thread nobody could find, so it is worth repeating.

0 likes 3mo
TI
trough_indexTL3Regular8 May 2026#32
n.szabo, post #17: Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution. It is the sort of thing that seems obvious in retrospect and was not at the time. Go to post

Narrowing post #31, because the general version has more than one answer.

Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either.

The uncertainty is in the assumption, not in the calculation.

27 likes in reply to #17 3mo
TD
t.demirTL29 May 2026#33

Post #31 and I disagree about the size of the effect, not about the direction.

Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution.

I would put this at better than even and not much better.

8 likes 3mo
K
KTurkingtonTL3Regular10 May 2026#34

Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either.

2 likes 3mo
NL
ne.laurentTL211 May 2026#35
f.pires, post #23: Taking post #22 at face value and following it one step further. Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either. Go to post

Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution.

14 likes in reply to #23 3mo
L
LJankowiakTL3Regular12 May 2026 · edited#36
integrator_draft, post #16: The arithmetic in post #14 is right; the assumption feeding it is the part to check. Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either. Go to post

Following this. I have the same question and no better information than the first post.

5 likes in reply to #16 3mo
AN
a.norgaardTL213 May 2026#37

Worth separating two things that post #35 runs together.

Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either.

The short version is the first sentence; the rest is why.

0 likes 3mo
NB
n.bridgewaterTL2Member14 May 2026#38

This follows post #35 rather than contradicting it.

Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution.

Posted with less confidence than the sentence structure implies.

28 likes 2mo
CB
c.bakkerTL215 May 2026#39
a.norgaard, post #37: Worth separating two things that post #35 runs together. Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either. The short version is the first sentence; the rest is why. Go to post

Coming back to post #35, because the follow-up matters more than the original answer.

Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either.

9 likes in reply to #37 2mo
JN
j.nascimentoTL216 May 2026#40

Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution.

2 likes 2mo
ER
eire_readerTL2Regional · IE17 May 2026#41

Narrowing post #40, because the general version has more than one answer.

Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either.

The disagreement above is smaller than it looks once the terms are fixed.

0 likes 2mo
ZS
z.szaboTL218 May 2026#42

Everything in post #38 holds. The case it does not cover is the one I have.

Disordered eating history: appetite suppression can trigger relapse in people with history of anorexia, bulimia, or other eating disorders. This is a relative contraindication requiring specialist input.

That distinction has done more work for me than anything else in this category.

0 likes 2mo
W
WendelboeTL2Member19 May 2026#43
GDashwood, post #12: Adding the measurement that post #9 says would settle it. History of pancreatitis: these compounds can rarely trigger pancreatitis. History of pancreatitis increases relative risk. That is a relative contraindication, not absolute, but requires monitoring. If that reads as pedantic, it is, and it has saved me twice. Go to post

Medullary thyroid carcinoma (personal or family history) or multiple endocrine neoplasia type 2: absolute contraindication. The rodent preclinical signal is real enough to exclude this population.

5 likes in reply to #12 2mo
FY
f.yildizTL220 May 2026 · edited#44

Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution.

14 likes 2mo
CP
citation_peakTL3Regular21 May 2026#45

Reading rather than contributing, but this is the most useful thread I have found on it.

28 likes 2mo
MN
ma.nascimentoTL222 May 2026#46

I read post #42 twice before replying, because I had assumed the opposite.

Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either.

I would rather say I do not know than round it up to an answer.

0 likes 2mo
LP
l.parkinsonTL2Member22 May 2026#47
dr_bhattacharya, post #8: Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution. This is where my knowledge stops and I would rather mark the edge than blur it. Go to post

Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution.

That is all I can say without guessing.

2 likes in reply to #8 2mo
SD
s.demirTL223 May 2026#48
f.ibarra, post #19: Worth separating two things that post #17 runs together. Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution. Go to post

Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either.

9 likes in reply to #19 2mo
VS
vial_slopeTL3Regular24 May 2026#49

Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution.

0 likes 2mo
VM
v.malinowskiTL225 May 2026#50

Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either.

4 likes 2mo
SB
s.beaulieuTL226 May 2026#51

Post #49 describes the usual case. This is about the unusual one.

Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution.

Stating my assumptions rather than smuggling them in.

26 likes 2mo
GH
g.haalandTL3Regular27 May 2026 · edited#52
eire_reader, post #41: Narrowing post #40, because the general version has more than one answer. Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either. The disagreement above is smaller than it looks once the terms are fixed. Go to post

Adding the measurement that post #49 says would settle it.

Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either.

One case, stated as one case.

12 likes in reply to #41 2mo
TV
to.vargaTL228 May 2026#53
CD
cohort_driftTL3Regular29 May 2026#54

Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either.

Worth saying I have only my own numbers here, and n is small.

0 likes 2mo
AS
a.sorensenTL230 May 2026#55

Personal or family history of medullary thyroid carcinoma, or multiple endocrine neoplasia type 2, is the clearest contraindication in this class and it is specific rather than general.

I would want the raw data before agreeing with my own summary of it.

19 likes 2mo
AS
a.salcedoTL3Regular31 May 2026 · edited#56
n.bridgewater, post #38: This follows post #35 rather than contradicting it. Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution. Posted with less confidence than the sentence structure implies. Go to post

Picking up post #54: that is the part I would want checked first.

Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either.

I have written this out at length because the short version keeps being misread.

8 likes in reply to #38 2mo
KH
ka.haddadTL231 May 2026#57

Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution.

2 likes 2mo
J
JFitzgibbonTL2Member1 Jun 2026#58

Somebody's condition being on a list does not settle the decision, and somebody's condition being absent from one does not either.

0 likes 2mo
TW
t.wojcikTL22 Jun 2026#59
l.parkinson, post #47: Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution. That is all I can say without guessing. Go to post

Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution.

0 likes in reply to #47 2mo
JD
j.dahlbergTL23 Jun 2026#60
ne.laurent, post #35: Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants caution. Go to post

History of pancreatitis: these compounds can rarely trigger pancreatitis. History of pancreatitis increases relative risk. That is a relative contraindication, not absolute, but requires monitoring.

Written in the hope of being told what I have missed.

25 likes in reply to #35 2mo