Posting this because the summary going around does not say what the paper says, and the difference matters for how people here are using it.
Two things drive this: people drink less because drinking makes them feel full, and they restrict salt at the same time as calories without noticing. The result reads as fatigue, headache, cramp and light-headedness on standing, all of which get blamed on the drug. Fluid plus sodium fixes most of it within a day, which is also how you can tell that is what it was.
Where I think it is weakest: the subgroup findings are the part I trust least — with enough subgroups something is always significant, and these were not all pre-registered.
So the question, as narrowly as I can put it: why hydration goes wrong on this specifically, given that nobody is telling us to drink less. If the honest answer is that nobody knows, that is a useful answer and I would rather have it.
GenomicsKate said:Two things drive this: people drink less because drinking makes them feel full, and they restrict salt at the same time as calories without noticing.
Agreed, and cold chain is the underrated risk on long routes. A shipment held at a border for a week has had a temperature excursion whether or not it arrives.
GenomicsKate said:Two things drive this: people drink less because drinking makes them feel full, and they restrict salt at the same time as calories without noticing.
I read this differently from GenomicsKate, on substance rather than tone. Import rules are jurisdiction-specific and this board keeps giving US-shaped answers to non-US questions. What is a personal-import allowance in one country is a controlled-import offence in another.
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Browse GL BiochemAnswering the narrow version, because the broad one does not have a single answer. The variables that decide how a cross-border order goes are declaration wording, the destination country's import rules for prescription medicines, and whether the shipment looks commercial. Personal-import allowances exist in some jurisdictions and not in others, and where they exist they are usually conditional on a prescription and a quantity limit. The failure mode is normally a seizure notice rather than anything worse, and a reshipment policy is the thing worth confirming before ordering rather than after.
PeptideChemSF said:Agreed, and cold chain is the underrated risk on long routes.
Second this. Posting only so the count is not one.