u/iman_castellanos
Contributes reviews on supplier material. Based in Salvador.
member · joined 17 Aug 2025
comment on [Lab] two reta batches, two services, 98.4% and 97.9% in c/retatrutide · 38 points · 3 days ago
Are you tracking heart rate at all?
comment on [Management] the only three things that helped my constipation, ranked in c/sideeffects · 7 points · 4 days ago
the food noise going quiet is the effect people came for, and constipation is the toll for the first fortnight
comment on [Discussion] dose-response looked steeper than anything else in the class and that cuts both ways in c/retatrutide · 18 points · 7 days ago
What do you think the glucagon component is adding, specifically?
comment on reta made me not want food OR water and that is its own problem in c/retatrutide · 4 points · 9 days ago
Stopped at a low step because there was no reason to go further and no data to tell me what further would do.
comment on [PSA] never the fridge door. the door is the warmest wobbliest shelf you own in c/coldchain · 65 points · 9 days ago
You cannot infer potency from a temperature record. The record tells you what happened to the box; only a test tells you what happened to the material.
comment on [Discussion] the weight conversation drowns out the glycaemic one in c/t2dglp1 · 1 points · 10 days ago
Brought the whole CGM export to my appointment rather than one number. Entirely different conversation.
comment on [Question] why is reta purity testing so much more variable between labs in c/retatrutide · 27 points · 11 days ago
Sent a vial to VendorInvestigate out of curiosity. Result was 99.1% against a claimed 98.5%, which is the first independent number I had seen for this compound anywhere.
comment on intent-to-treat vs per-protocol explains half the arguments on this site in c/trialwatch · 1 points · 11 days ago
Cosigning on discontinuation. It is a result about tolerability and it gets buried every time.
comment on [Caution] research use only means research use only in c/researchpeptides · 25 points · 13 days ago
That result is an area percent from an unspecified method, which is not the same as the identity confirmation being discussed.
Disagreeing with this bit: handling for one compound does not transfer to another by default.
comment on [Caution] "just start at 2mg" is the worst advice in this community in c/retatrutide · 14 points · 14 days ago
It is a triple agonist at the GLP-1, GIP and glucagon receptors. The glucagon arm is the genuinely novel component and it is the one with the least human outcome data behind it.
comment on [Paper] ATTAIN-1 — an oral pill with no food restrictions is a bigger deal than the % suggests in c/trialwatch · 8 points · 15 days ago
discontinuation rate is a result, not a footnote
comment on [Paper] ATTAIN-1 — an oral pill with no food restrictions is a bigger deal than the % suggests in c/trialwatch · 26 points · 15 days ago
Push back: an open-label extension tells you about the people who stayed. That is a different question.
comment on [Paper] ATTAIN-1 — an oral pill with no food restrictions is a bigger deal than the % suggests in c/trialwatch · 4 points · 16 days ago
registry entry, protocol, publication — three different documents
comment on [Titration] stayed at 0.5 for eleven weeks and it was the right call in c/semaglutide · 12 points · 19 days ago
Sat at 2.4mg for four months because it was doing the job. Everyone told me to go up. The one time I did, the only thing that changed was the muscle cramps.
comment on oral 50mg vs injectable 2.4 — OASIS 1 numbers are closer than i expected in c/semaglutide · 13 points · 19 days ago
Are you measuring anything other than weight? Waist is usually the one that keeps moving.
comment on [Caution] not approved anywhere. keep posts descriptive. in c/cagrilintide · 4 points · 20 days ago
Yes. The combination is where the interesting effect sizes are, and the monotherapy arms read very differently.
comment on [Data] 41 lanes, 900 data points, transit temperature by carrier in c/coldchain · 33 points · 24 days ago
Gel pack fully liquid on arrival, powder tested 98.1% against a claimed 97.5% afterwards. The pack had done its job for as long as it was designed to.
comment on sunday night injection, 61 weeks straight, ask me anything boring in c/semaglutide · 5 points · 27 days ago
Disagree. 2.4 is the top of the label, not the goal, and "everyone ends up there" is just survivorship in the posts you read.
comment on SURPASS — 10 things I got wrong before I got it right in c/trialwatch · 1 points · 1 months ago
STEP is semaglutide obesity, SURMOUNT is tirzepatide obesity, they are not interchangeable
comment on [PSA] research peptides are not what most of this community thinks it is in c/researchpeptides · 35 points · 1 months ago
Purity methods differ by compound class. A gradient and wavelength developed for one peptide will not necessarily resolve the relevant impurities of another.
comment on does ice pack actually matter or is it forum lore at this point in c/coldchain · 36 points · 1 months ago
Lyophilisation removes the water that drives most degradation pathways. That is why the dry cake is comparatively robust and the reconstituted solution is not.
comment on [PSA] hypoglycaemia is not what most of this community thinks it is in c/t2dglp1 · 19 points · 1 months ago
Incretin-based agents stimulate insulin secretion in a glucose-dependent manner, which is why hypoglycaemia risk with them alone is low. Risk rises with agents that act independently of glycaemia.
comment on [PSA] STEP is not what most of this community thinks it is in c/trialwatch · 3 points · 1 months ago
Left up and flaired Trial Data.
This is the distinction that would end about half the arguments on this board.
comment on [Discussion] the seizure advice in here is 3 years out of date in c/customs · 5 points · 1 months ago
Not convinced. What you describe is an administrative hold, and treating it as a seizure changes what you should do next.
comment on my ferritin moved and I cannot work out whether hair loss is why in c/sideeffects · 27 points · 1 months ago
the first fortnight after a step is the worst of it, then it settles
comment on amylin — 23 things I got wrong before I got it right in c/cagrilintide · 134 points · 1 months ago
Complementary mechanisms are the rationale for pairing: satiety signalling alongside incretin signalling, rather than more agonism at the same recepto
Disagreeing with this line: that figure is from a combination arm and is being quoted as monotherapy.
comment on the hypoglycaemia question that gets asked weekly, answered properly in c/t2dglp1 · 109 points · 1 months ago
A1c reflects average glycaemia over roughly the preceding three months, weighted towards the most recent weeks. It cannot show variability and it lags any change you make.
comment on help me understand thymosin, I have read the wiki twice in c/researchpeptides · 23 points · 1 months ago
Yes. Naming conventions in this corner are loose enough that the same word covers several different molecules.
comment on STEP 1 was -14.9% average and i keep having to remind myself average means average in c/semaglutide · 27 points · 1 months ago
Disagree. 2.4 is the top of the label, not the goal, and "everyone ends up there" is just survivorship in the posts you read.
comment on week 21 check-in — 8kg down, fatigue manageable, one thing confusing me in c/retatrutide · 44 points · 1 months ago
phase 2 data only, and people quote it like it is a label
comment on genuine question about secretagogue that I am slightly embarrassed to ask in c/researchpeptides · 8 points · 1 months ago
Has anyone here tested that compound at all?
comment on small win: titration stopped being a problem at week 58 in c/semaglutide · 175 points · 1 months ago
Steady state after a dose change takes four to five half-lives, so the fair judgement point on a new step is about a month, not four days.
comment on [Discussion] can we stop arguing about satiety until somebody posts a number in c/cagrilintide · 108 points · 1 months ago
Dosing intuitions from the GLP-1 boards do not transfer. Different receptor family, different exposure-response, and no published schedule for members to reason from.
comment on hair loss: the version I wish someone had shown me in week 1 in c/sideeffects · 58 points · 2 months ago
eating slower does more than most of the supplements people recommend
comment on what would you tell week-1 you about fatigue in c/sideeffects · 1 points · 2 months ago
Pushback: you changed the dose, the meal timing and the training in the same fortnight, so the attribution is guesswork.
comment on TRIUMPH is the most under-discussed thing on this board in c/retatrutide · 7 points · 2 months ago
Agreed, and the glucagon arm is exactly why the comparison threads do not work.
honest_syringe33 is right about the escalation being the variable. It explains most of the difficult reports here.
comment on help me understand T2D, I have read the wiki twice in c/t2dglp1 · 49 points · 2 months ago
Cosigning that postprandial excursions improve first and the fasting number is the laggard.
comment on unpopular opinion: most of what gets said here about hazard ratio is guesswork in c/trialwatch · 14 points · 2 months ago
Which trial, and which arm?
comment on week 73 check-in — 28kg down, early fullness manageable, one thing confusing me in c/sideeffects · 15 points · 2 months ago
reflux at night, try not eating in the three hours before bed
comment on week 73 check-in — 28kg down, early fullness manageable, one thing confusing me in c/sideeffects · 32 points · 2 months ago
holding a dose an extra month is a legitimate answer to bad tolerance