v.fontaine

TL2 Moderator · Funchal

Contributes reviews on supplier material. Based in Funchal.

Joined 2 February 2025 · last posted 9d

72 posts, newest first. Showing up to 150.

Revisiting: The best-written scientific paper you have read Replied, post #101 · Lounge › Off topic · 19 Jul 2026 · 0 likes Adjacent and interesting: you might post something about nutrition, bioavailability from a food perspective, or the sociology of weight. Adjacent to this community's…
Tesamorelin has an approved indication — what that changes about the evidence Replied, post #25 · Compounds › Secretagogues & GH axis · 17 Jul 2026 · 31 likes Coming back to post #23, because the follow-up matters more than the original answer. Tesamorelin has an approved indication in HIV-associated lipodystrophy. That is…
Revisiting: The best-written scientific paper you have read Replied, post #90 · Lounge › Off topic · 14 Jul 2026 · 31 likes Worth separating two things that post #86 runs together. Humour: light, relevant humour is welcome. Cruel humour targeting individuals or groups is not.
Second pass at: What a 2 ppm match establishes, and what it does not Replied, post #42 · Analytics › Mass spectrometry · 12 Jul 2026 · 11 likes Resolution: "high resolution" commonly means
Reading a home test result without over-claiming Replied, post #113 · Analytics › Home & field testing · 10 Jul 2026 · 14 likes Enzyme assays: if you have an enzyme that reacts specifically with your compound, an enzyme-based assay can work. These are sometimes available commercially but are…
What to bring: records that a clinician can actually use — a second dataset Replied, post #3 · Clinical › Prescriber conversations · 2 Jul 2026 · 0 likes Coming back to the opening post, because the follow-up matters more than the original answer. Discussing side effects: be specific. "Nausea" is less useful than "I have…
Tracking semaglutide's approved indications across jurisdictions, dated Replied, post #13 · Compounds › Semaglutide · 24 Jun 2026 · 2 likes The SELECT trial changed the positioning because it was the first cardiovascular outcome trial in people without diabetes. That decoupled the cardiovascular argument…
Reflectance and photometric devices: precision in practice — a second dataset Replied, post #55 · Analytics › Home & field testing · 22 Jun 2026 · 2 likes Picking up post #52: that is the part I would want checked first. Lateral-flow devices: like a rapid COVID test. They have a reagent strip and produce a colour result.…
Reading a home test result without over-claiming Replied, post #84 · Analytics › Home & field testing · 18 Jun 2026 · 6 likes Why third-party testing is stronger: a home test run by the person who made the compound is a self-selected result. The test run by a neutral third party removes…
Follow-up: Prior authorisation: what the criteria usually require Replied, post #25 · Access › Insurance & coverage · 17 Jun 2026 · 2 likes Prior authorisation: pre-approval requirements and how to satisfy them. Most denials cite specific criteria. Understanding the criterion is the first step in satisfying…
Follow-up: UK access routes, dated and sourced Replied, post #5 · Regional › UK & Ireland · 17 Jun 2026 · 0 likes Ireland: the Health Products Regulatory Authority implements EU framework. Prescription-only. Reimbursement for weight management has been more restrictive than for…
Carryover and the ghost peak from last week's standard — what changed since Replied, post #6 · Analytics › HPLC & UHPLC · 4 Jun 2026 · 0 likes post #5 answers the question as asked. The question underneath it is different. System suitability testing: injections run before and during the sample run to establish…
[2026 update] 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #101 · Devices › Syringes & needles · 9 May 2026 · 8 likes Sharps disposal: needles and syringes should be disposed in a sharps container (a rigid, puncture-resistant container). Do not put them in regular trash. Many…
Second pass at: When your prescriber and the evidence disagree Replied, post #11 · Clinical › Prescriber conversations · 16 Apr 2026 · 19 likes This follows post #8 rather than contradicting it. Asking about monitoring: understand what lab work will be done, how often, and what you will be monitored for. A plan…
Coming back to: Washout: how long is long enough, and for what purpose Replied, post #105 · Pharmacology › Pharmacokinetics · 14 Apr 2026 · 30 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
Insomnia at a dose step: reported experiences — the long version Replied, post #10 · Wellbeing › Sleep · 10 Apr 2026 · 0 likes When sleep problems need attention: if sleep does not improve as weight loss continues or if it worsens, discussing with a clinician is prudent. Sleep disorders are…
List price versus negotiated price versus what you pay Replied, post #3 · Access › Pricing · 7 Apr 2026 · 13 likes post #2 answers the question as asked. The question underneath it is different. Compute cost per delivered dose at your dose if you want a number you can act on. That…
Follow-up: Search filters: what is missing Replied, post #66 · Meta › Site feedback · 31 Mar 2026 · 31 likes Worth separating two things that post #62 runs together. Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather…
Reconstitution volumes that produce round numbers, tabulated Replied, post #78 · Practice › Reconstitution · 30 Mar 2026 · 2 likes I read post #76 twice before replying, because I had assumed the opposite. How much of the diluent volume the powder itself displaces: for a small peptide vial, the…
Follow-up: The retatrutide phase 2 obesity paper, read closely Replied, post #7 · Compounds › Retatrutide · 25 Mar 2026 · 9 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
How to ask about something you suspect is a bad idea Replied, post #65 · Start Here › How to Ask · 14 Mar 2026 · 0 likes Context that matters: compound, how long in, current dose, relevant history. Context that does not matter: how you feel, your hopes for the outcome, your medical…
Type 2 diabetes and the largest part of the evidence base Replied, post #14 · Clinical › Comorbidities · 26 Feb 2026 · 3 likes 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.
Why an oral GLP-1 agonist is a formulation achievement more than a chemistry one — one… Replied, post #13 · Compounds › Oral incretins · 18 Feb 2026 · 1 like Coming back to post #11, because the follow-up matters more than the original answer. Having read the exchange above, I think I was wrong earlier in this topic and I…
Five questions in one post gets you one answer — how to split them Replied, post #5 · Start Here › How to Ask · 31 Jan 2026 · 0 likes 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.
Moderation log format change Replied, post #25 · Meta › Announcements · 30 Jan 2026 · 0 likes 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…
Trifluoroacetate content and its consequences Replied, post #37 · Analytics › Impurities & related substances · 28 Jan 2026 · 1 like Dimer and higher-order multimers: two or more peptide molecules bonded together. They appear at double the mass and higher. They may or may not separate from the…
Revisiting: Language barriers in accessing a prescription abroad Replied, post #29 · Access › International · 28 Dec 2025 · 7 likes Insurance and coverage: coverage decisions are national. A compound approved in one country might not be covered by insurance in another. Checking both approval and…
Older adults, sarcopenia risk, and the trade-off nobody quantifies Replied, post #59 · Clinical › Special populations · 24 Dec 2025 · 3 likes Picking up post #56: that is the part I would want checked first. I disagree with the reply above, and I think the disagreement is substantive rather than…
Why an oral GLP-1 agonist is a formulation achievement more than a chemistry one Replied, post #76 · Compounds › Oral incretins · 5 Dec 2025 · 16 likes Coming back to post #74, because the follow-up matters more than the original answer. Trial adherence in an oral trial with strict administration requirements is…
Coming back to: Injection-site reactions: describing them precisely enough to be useful Replied, post #18 · Practice › Side effects · 24 Nov 2025 · 4 likes Constipation: common, manageable, and frequently under-reported because it is not dramatic. Increasing fibre and fluid intake helps. Over-the-counter management is…
The headache that turns out to be dehydration Replied, post #67 · Nutrition & Training › Hydration & electrolytes · 23 Nov 2025 · 0 likes I read post #65 twice before replying, because I had assumed the opposite. Water intoxication: drinking excessive water (more than a few liters per day for extended…
Lurking for two months before posting: was that the right call? Replied, post #51 · Start Here › Welcome · 20 Nov 2025 · 16 likes There is no stupid-questions rule and no penalty for asking badly. The response to a poorly framed question is a request for clarification, not rudeness. That is a…
Follow-up: What a seizure notice actually says Replied, post #19 · Sourcing › Logistics · 25 Oct 2025 · 15 likes Documentation after arrival: photograph the parcel and its contents on arrival. If something later turns out wrong (damage, loss, wrong item) you have evidence of the…
Managing an unplanned gap in supply — what changed since Replied, post #97 · Access › Shortages · 25 Oct 2025 · 0 likes Dose hold versus tapering: if a temporary shortage forces a gap, holding your dose and resuming when supply returns is different from gradually tapering. The two are…
Substitution between formats during a shortage Replied, post #81 · Access › Shortages · 24 Oct 2025 · 5 likes This follows post #78 rather than contradicting it. Compounding during shortages: some jurisdictions allow pharmacy compounding when a marketed product is in shortage.…
Journal club: indirect comparison between two programmes, defended and attacked — one… Replied, post #41 · Evidence › Journal club · 30 Sep 2025 · 29 likes SELECT (N Engl J Med 2023): Semaglutide cardiovascular outcomes without diabetes. The first outcome trial in people without diabetes, which decoupled the cardiovascular…
[2026 update] Does dual agonism explain the effect size, or is it dose? Replied, post #25 · Compounds › Tirzepatide · 21 Sep 2025 · 0 likes post #24 is right about the mechanism and I think understates the practical bit. Storage and stability: published data on licensed tirzepatide formulations exists and…
Airline travel with a temperature-sensitive injectable — what changed since Replied, post #79 · Devices › Cold chain · 20 Sep 2025 · 3 likes Assessing an excursion: if a package sat at room temperature for a time, visual inspection (cloudiness, discoloration, particles) can alert you to problems. Not visible…
Coming back to: Resolution and tailing factor: real acceptance criteria Replied, post #76 · Analytics › HPLC & UHPLC · 19 Sep 2025 · 24 likes I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The distinction being drawn does not survive when you look at…
A checklist for reading a certificate in under two minutes — does this still hold? Replied, post #41 · Analytics › COA interpretation · 5 Sep 2025 · 1 like Endotoxin testing is separate: a certificate of purity says nothing about endotoxin. A chemically pure preparation can carry a clinically significant endotoxin load. If…
A parcel that arrived warm: a decision process, not a verdict Started this topic · Practice › Storage & stability · 11 Aug 2025 · 18 likes A parcel that arrived warm: a decision process, not a verdict Writing it up because I had to work it out twice and would rather nobody else did. A question about…
IGF-1 as a surrogate endpoint and its limitations — the long version Replied, post #19 · Compounds › Secretagogues & GH axis · 10 Aug 2025 · 4 likes Ipamorelin selectivity claims originate in preclinical characterisation and are reasonably well supported for what they claim: less effect on cortisol and prolactin…
Are there stupid questions here? A staff answer, at length Replied, post #9 · Start Here › Welcome · 24 Jul 2025 · 4 likes Worth separating two things that post #5 runs together. Trust levels accumulate over time and they give you access to small things like the ability to edit your own…
Asking about a compound your prescriber has not heard of Replied, post #92 · Clinical › Prescriber conversations · 12 Jul 2025 · 2 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
Follow-up: Tracking intake honestly when appetite is absent Replied, post #78 · Nutrition & Training › Protein & intake · 13 Jun 2025 · 1 like On post #74 — agreed on the reasoning, with one qualification. Two things before anyone answers the substance. First, the context in the first post is clear and…
Coming back to: Over-dilution: when your dose falls below one readable graduation Replied, post #19 · Practice › Reconstitution · 7 Jun 2025 · 0 likes post #18 is right about the mechanism and I think understates the practical bit. I disagree with the reply above, and I think the disagreement is substantive rather…
When to stop reading forums, including this one — the long version Replied, post #17 · Wellbeing › Mental health · 13 May 2025 · 21 likes Mood and anxiety: mood changes and anxiety are reported by some people. Baseline mental health status matters for risk. Someone with a history of depression should plan…
Reading a trial's population section before its results — does this still hold? Replied, post #97 · Evidence › Trials · 13 May 2025 · 0 likes Picking up post #94: that is the part I would want checked first. Risk of bias: structured appraisal of internal validity. Key things to assess: randomisation method…
Second pass at: Triple agonism: additive, synergistic, or neither? Replied, post #49 · Compounds › Retatrutide · 11 May 2025 · 0 likes The phase 2 obesity paper reported dose-dependent weight reduction of a magnitude that attracted attention. It also reported dose-dependent heart-rate increases. The…
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly Replied, post #69 · Compounds › Tirzepatide · 25 Apr 2025 · 11 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
Sequence verification for an obscure compound: how it is done Replied, post #19 · Compounds › Other compounds · 24 Apr 2025 · 1 like post #18 answers the question as asked. The question underneath it is different. Thank you for the correction. I have edited my earlier post with a note rather than…
Journal club: STEP 4 and what a withdrawal design can prove — one year on Replied, post #58 · Evidence › Journal club · 17 Apr 2025 · 0 likes SURMOUNT-OSA (N Engl J Med 2024): Tirzepatide in obstructive sleep apnoea, using an objective physiological endpoint. Notable because soft endpoints are avoided. Two…
Fibre intake when total intake falls, and the constipation link Replied, post #50 · Nutrition & Training › Protein & intake · 7 Apr 2025 · 29 likes Eating anything at all: on substantial appetite suppression, eating enough total calories to maintain lean mass is the priority. Protein comes second to total intake.
Coverage for the indication versus for the drug — a second dataset Replied, post #42 · Access › Insurance & coverage · 25 Mar 2025 · 24 likes I read post #40 twice before replying, because I had assumed the opposite. Denial letters: the stated reason tells you exactly what to submit next. A denial is not…
Biased agonism: a real phenomenon, an over-used explanation Replied, post #15 · Pharmacology › Receptor biology · 27 Feb 2025 · 0 likes GLP-1 receptor signalling: the GLP-1 receptor is expressed on beta cells (insulin secretion), on neurons (appetite and gastric motility), and on myocardium…
Coming back to: Official shortage notices and what they authorise Replied, post #44 · Access › Shortages · 27 Feb 2025 · 1 like Managing an unplanned gap: if a shortage causes a gap in treatment, the questions are how long the gap will be and how that affects your condition. Discussing with your…
What the published dose-response for semaglutide actually looks like above 2.4 mg — a… Replied, post #79 · Compounds › Semaglutide · 26 Feb 2025 · 0 likes I read post #77 twice before replying, because I had assumed the opposite. Approved indications differ by jurisdiction and change. As of mid-2026 the weight-management…
Protein density versus volume when you cannot eat much Replied, post #10 · Nutrition & Training › Protein & intake · 23 Jan 2025 · 8 likes Eating anything at all: on substantial appetite suppression, eating enough total calories to maintain lean mass is the priority. Protein comes second to total intake.
What changed in 2026, by region Replied, post #92 · Access › International · 22 Jan 2025 · 17 likes Import rules for personal use: what you can import for personal use depends on your country's rules, not on where it is sold. Checking your country's rules before…
SURPASS-2 and the comparator dose question that will not go away Replied, post #85 · Compounds › Tirzepatide · 22 Dec 2024 · 0 likes Worth separating two things that post #81 runs together. Mass and charge states: tirzepatide is about 4813.5 Da and on an electrospray instrument you would expect to…
Telehealth prescribing models in the US Replied, post #35 · Regional › North America · 19 Dec 2024 · 27 likes This follows post #32 rather than contradicting it. Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still…
Follow-up: Tirzepatide's shorter half-life and its one practical consequence Replied, post #90 · Compounds › Tirzepatide · 15 Dec 2024 · 1 like Picking up post #87: that is the part I would want checked first. SURMOUNT-4 used a randomised withdrawal design: everyone titrated, then those on maintenance were…
Two sessions a week versus four: what the evidence supports Replied, post #17 · Nutrition & Training › Resistance training · 28 Nov 2024 · 3 likes Maintenance is the goal: preserving lean mass and strength during weight loss is the goal of resistance training in this context, not building new muscle. That goal is…
Semaglutide half-life: where the 165 to 184 hour figure comes from — what changed since Replied, post #31 · Compounds › Semaglutide · 24 Oct 2024 · 11 likes Semaglutide versus liraglutide in STEP 8: semaglutide produced greater weight reduction and the discontinuation rates differed. But the trial was open-label for the…
Converting between mg/mL and units per dose, both directions Replied, post #48 · Practice › Reconstitution · 12 Oct 2024 · 13 likes 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…
Progressive overload when the scale is falling — one year on Replied, post #142 · Nutrition & Training › Resistance training · 10 Oct 2024 · 31 likes Deload weeks: periodic weeks (every 4 to 8 weeks) with reduced volume and intensity can help with recovery and sometimes reveal strength gains that got obscured by…
People with a low starting BMI: where the evidence stops Started this topic · Clinical › Special populations · 6 Sep 2024 · 44 likes Posting this under the heading it deserves: People with a low starting BMI: where the evidence stops Everything below is what sits behind that. Asking about a…
A rising related-substance total over six months: degradation or method drift? Replied, post #24 · Analytics › Impurities & related substances · 1 Sep 2024 · 33 likes I read post #22 twice before replying, because I had assumed the opposite. Dimer and higher-order multimers: two or more peptide molecules bonded together. They appear…
Journal club: SURPASS-2 and the semaglutide 1 mg comparator Replied, post #19 · Evidence › Journal club · 17 Aug 2024 · 13 likes Worth separating two things that post #15 runs together. PIONEER 6 (N Engl J Med 2019): Cardiovascular safety trial for oral semaglutide, not efficacy. Non-inferiority…
Second pass at: Journal club: LEADER as the historical anchor Replied, post #38 · Evidence › Journal club · 18 Jul 2024 · 0 likes PIONEER 6 (N Engl J Med 2019): Cardiovascular safety trial for oral semaglutide, not efficacy. Non-inferiority for safety was met. The trial was not designed to…
How this community labels and discusses unrefereed work Replied, post #73 · Evidence › Preprints · 10 Jul 2024 · 3 likes 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…
Spreadsheets: an appreciation Replied, post #3 · Lounge › Off topic · 4 Jun 2024 · 0 likes Adjacent and interesting: you might post something about nutrition, bioavailability from a food perspective, or the sociology of weight. Adjacent to this community's…