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Managing an unplanned gap in supply — 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.

YR
y.rahimiTL25 Aug 2025#31

Resuming after a gap: after a gap of days or a few weeks, most people resume at the dose they were on when they stopped. Gaps of months might require retitration discussion with a clinician.

One case, stated as one case.

2 likes 12mo
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preregisteredTL3Research methods6 Aug 2025#32

Adding thanks rather than a view. I do not have a view worth the space.

0 likes 12mo
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j.vogelTL27 Aug 2025#33

Answering the question post #29 raises rather than the one it answers.

Stockpiling in response to a shortage worsens it, which is true and is a poor argument to make to somebody who has run out.

29 likes 12mo
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retention_indexTL2Analytical chemist9 Aug 2025 · edited#34
i.grimaldi, post #3: Agreed on all of that, and I have nothing to add to it. Go to post

The arithmetic in post #33 is right; the assumption feeding it is the part to check.

The version of Managing an unplanned gap that I was taught turned out to be a teaching simplification. Useful, and not true in the way I had assumed it was.

14 likes in reply to #3 12mo
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m.adeyemiTL210 Aug 2025#35

Regional differences during a shortage are large, and a supply position in one country says nothing about another.

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

1 like 12mo
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chromatogramTL4Analytical chemist12 Aug 2025#36

I have been on both sides of the Managing an unplanned gap argument in this category within eighteen months, which should tell you how strong the evidence for either side is.

0 likes 12mo
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e.kuuselaTL213 Aug 2025#37
s.silva, post #15: Nothing here is medical advice, and decisions about what to do during a supply interruption belong with a prescriber. Go to post

Post #33 describes the usual case. This is about the unusual one.

What I want from this Managing an unplanned gap thread is the list of things that would need to be true for the claim to hold. If we can write that list, we can check it.

21 likes in reply to #15 11mo
JM
j.mwangiTL4 Moderator14 Aug 2025#38
c.draganov, post #8: Post #4 describes the usual case. This is about the unusual one. One more thing on Managing an unplanned gap that took me far too long to see: the two figures people quote are not measuring the same quantity. Once you notice that, the apparent contradiction disappears. Go to post

Anyone reporting availability should say the region and the date, because both determine whether the report is usable.

Stating my assumptions rather than smuggling them in.

9 likes in reply to #8 11mo
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e.nilsenTL216 Aug 2025#39
z.laurent, post #21: My experience of Managing an unplanned gap contradicts the reply above. I am posting it as a data point rather than as a refutation, because one person's experience is exactly that. Go to post

This is the first time the answer has come with its own limits attached. Appreciated.

0 likes in reply to #21 11mo
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fr.translation_moTL2Translator · FR17 Aug 2025#40

This follows post #37 rather than contradicting it.

Reports that a pharmacy has stock are the least durable information on the site and are still worth posting with a date.

30 likes 11mo
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ppm_errorTL3Analytical chemist18 Aug 2025#41

International supply chains: a shortage in one country does not mean shortage in another. That is why ordering from multiple suppliers before a shortage gets bad is prudent if you can.

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r.petrovTL220 Aug 2025#42

Checked the Managing an unplanned gap claim against the primary source this morning. It survives, with a narrower scope than the version quoted here. Posting the narrower scope.

5 likes 11mo
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m.strand_rphTL3Pharmacist21 Aug 2025#43
a.weiss, post #17: On post #15 — agreed on the reasoning, with one qualification. Where a shortage forces a gap, the pharmacokinetics mean a missed week is a perturbation rather than a reset, which is worth knowing. That is one dataset and I would not build a rule on it. Go to post

Communication from suppliers: a supplier having supply problems usually communicates them. If a supplier goes silent, that is itself information.

The number is defensible. The precision I gave it is not.

20 likes in reply to #17 11mo
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b.vanheckeTL222 Aug 2025 · edited#44

Coming back to post #40, because the follow-up matters more than the original answer.

Date any statement about supply. Positions change within weeks and the archive keeps posts permanently.

Flagging that the sources on this are thinner than the confidence in the thread suggests.

0 likes 11mo
JM
j.mwangiTL4 Moderator24 Aug 2025#45

Adding the measurement that post #42 says would settle it.

Since Managing an unplanned gap keeps coming up, it should probably be a maintained page rather than a recurring thread. I am happy to draft it if someone with more direct experience will review it.

2 likes 11mo
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d.eriksenTL225 Aug 2025#46
b.vanhecke, post #44: Coming back to post #40, because the follow-up matters more than the original answer. Date any statement about supply. Positions change within weeks and the archive keeps posts permanently. Flagging that the sources on this are thinner than the confidence in the thread suggests. Go to post

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

8 likes in reply to #44 11mo
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n.haddadTL226 Aug 2025#47
n.lehtinen, post #14: International supply chains: a shortage in one country does not mean shortage in another. That is why ordering from multiple suppliers before a shortage gets bad is prudent if you can. Go to post

Where a manufacturer publishes a supply statement, that document is more reliable than any aggregation of individual experiences.

27 likes in reply to #14 11mo
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s.coelhoTL228 Aug 2025#48

On Managing an unplanned gap I would separate what is worth knowing from what is worth acting on. The first list is long and the second is short, and conflating them is how threads get heated.

0 likes 11mo
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j.nwosuTL229 Aug 2025#49

The arithmetic in post #47 is right; the assumption feeding it is the part to check.

The arithmetic on Managing an unplanned gap is the easy part and it is where the errors are, which is an uncomfortable combination. Show your working and someone will catch it.

0 likes 11mo
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n.stanescuTL230 Aug 2025#50
m.strand_rph, post #43: Communication from suppliers: a supplier having supply problems usually communicates them. If a supplier goes silent, that is itself information. The number is defensible. The precision I gave it is not. Go to post

Answering the question post #48 raises rather than the one it answers.

Device availability and compound availability are separate supply chains and the device is frequently the constraint.

One of those cases where knowing the mechanism does not help the decision.

0 likes in reply to #43 11mo
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e.dalgleishTL3Regular31 Aug 2025#51

Where a shortage forces a gap, the pharmacokinetics mean a missed week is a perturbation rather than a reset, which is worth knowing.

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ar.kravchenkoTL22 Sep 2025#52

Right, and stated more narrowly than I would have dared to state it.

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endpoint_marginTL2Member3 Sep 2025#53
v.bruun, post #9: Shortage-driven price movement is real and is a separate question from availability. The short version is the first sentence; the rest is why. Go to post

I read post #51 twice before replying, because I had assumed the opposite.

Where an alternative within the class is available, the comparison is a clinical one and the doses are not equivalent.

I am reporting what happened, not recommending it.

8 likes in reply to #9 11mo
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b.teixeiraTL24 Sep 2025#54

Post #51 answers the question as asked. The question underneath it is different.

Two things can be true about Managing an unplanned gap 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.

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MJayawardenaTL3Regular6 Sep 2025#55

Nothing here is medical advice, and decisions about what to do during a supply interruption belong with a prescriber.

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n.zielinskiTL27 Sep 2025#56

This follows post #55 rather than contradicting it.

Supply interruptions: official shortage notices are published by regulatory agencies. That is the correct primary source rather than pharmacy rumors or forum discussion.

Someone should write this up properly, and it should probably not be me.

19 likes 11mo
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OTeixeiraTL3Regular8 Sep 2025#57
e.kimani, post #16: Post #15 is right about the mechanism and I think understates the practical bit. Second-hand on Managing an unplanned gap, so weight it accordingly — someone whose method I trust told me this and I have not verified it myself. Go to post

Coming back to post #55, because the follow-up matters more than the original answer.

Managing an unplanned gap 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.

5 likes in reply to #16 11mo
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s.oyelaranTL29 Sep 2025 · edited#58
i.grimaldi, post #3: Agreed on all of that, and I have nothing to add to it. Go to post

Where a shortage forces a gap, the pharmacokinetics mean a missed week is a perturbation rather than a reset, which is worth knowing.

One more caveat and then I will stop qualifying: the sample selected itself.

0 likes in reply to #3 11mo
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OkaforTL311 Sep 2025#59
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i.oseiTL212 Sep 2025#60

Picking up post #58: that is the part I would want checked first.

Answering the Managing an unplanned gap question as asked, then the question I think is meant. As asked: yes, with the qualification below. As meant: it depends on how the first measurement was taken.

0 likes 10mo