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26 contributions to Castore: Built to Adapt
Running Tirz w/ Reta
What would be a recommended protocol for running tirz alongside reta? I'm taking reta once a week at 3.5mg and looking to ramp up to 4mg soon. I'm already having better success with the higher dosage but I'm looking for additional help curbing the food noise and suppressing cravings. Thanks in advance!
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The Case Against High Dose Slu
I’ve talked about this a few times before, but I know there are still plenty of questions around it so I wanted to take another shot at clearly explaining the reasoning behind my answer. The case against higher doses of SLU-PP-332 starts with first principles: this compound works as a signaling cue, not a substrate to be “pushed” toward saturation. In cell systems and animal models, SLU-PP-332 appears to activate the estrogen-related receptor (ERR) program with PGC-1α coactivation, shifting transcription toward fatty-acid oxidation, oxidative phosphorylation, and mitochondrial quality control. That kind of pathway is amplifier biology: a small receptor-level nudge fans out into many downstream genes and post-translational switches. In such networks, more ligand does not linearly equal more benefit; it often crosses into different biology entirely, including compensatory braking and desensitization. Think of it like tapping a conductor’s baton to set tempo versus throwing a bigger baton at the orchestra. The first coordinates; the second creates noise and reflexes you didn’t intend. A key downstream branch of the ERR/PGC-1α program is modulation of uncoupling proteins. Mild, context-appropriate uncoupling in UCP2 and UCP3 can lower electron pressure, trim reactive oxygen species, and improve metabolic flexibility under load. But pushing the axis hard increases the probability of off-site expression and activity in UCP4 and UCP5, which are enriched in neurons and glia. Excess uncoupling in those tissues risks local ATP shortfall where energy security is non-negotiable. In brain and autonomic circuits, too much leak across the inner mitochondrial membrane can force compensatory hypermetabolism to maintain voltage, distort calcium handling, and disturb neurotransmission timing. At the organism level, that looks like brain fog, dysautonomia, sleep fragmentation, and reduced stress tolerance exactly the systems you don’t want to pay for marginal fat-loss gains. Mechanistically, high-dose signaling also raises the odds of maladaptive redox and substrate partitioning. ERR/PGC-1α drive beta-oxidation and electron delivery to the respiratory chain. If you layer that on top of exercise, fasting, thyroid augmentation, or catecholamine tone, you can overshoot electron influx relative to complex-level throughput, increasing retrograde signaling and forcing the cell to dump potential as heat via uncoupling. At low dose this can be hormetic and helpful. At high dose, it can flatten the ATP/ADP ratio, trigger AMPK hard, suppress mTORC1 anabolics, and blunt hypertrophy. In muscle, that shifts toward more oxidative phenotype at the expense of contractile remodeling; in the heart, it risks energetics imbalance that the sinoatrial node and conduction system must buffer beat-to-beat.
2 likes • 29d
Thank you for this! I'm sure it's hard to quantify but at what point do you start calling a dose "too high"? How much is too much?
1 like • 29d
@Katharina Clig I actually have that one at the top of my "to do" list to listen to!
"Locking In" an IM Injection
I inject about 2mL of L-carnatine into my glute as part of my daily routine. I notice that when I withdraw the needle, that there is always some leakage. It's not a lot, but I adhere to the adage of "waste not want not." Is there a better way to prevent this wasting, or is a little bit of leakage from the injection site just par for the course? As a side note: The Z-track method is a no-go. I have a thicker torso and the amount of mobility needed to pull that off just isn't happening.
0 likes • Nov 4
@Anthony Hicks superslow seems to be the way to go. How slow would you go, though?
0 likes • Nov 4
@Anthony Hicks 😂😂😂
Retatrutide Not Working?
I'm at a loss and need some guidance, so any help is much appreciated. I've been taking reta for weeks now along with healthy lifestyle improvements and I haven't had much success at all. I keep reading all these posts people have made saying how amazing it's been for them, so I'm not sure what's wrong with me. My appetite has pretty much stayed the same, my cravings haven't quieted down all that much, and with the exception of 1-2 pounds, I haven't seen any significant improvement in body recomp. Is it possible that peptides just don't work for some people? Is it possible to be so broken and so far gone that reta just doesn't do anything? Does anyone else feel the same way or am I the only one? It sucks to put time, effort, energy, and money into efforts to improve health, and you feel like you're just spinning your wheels. I apologize for the "pity party" rant but I'm at my wits end and just don't know what to do.
1 like • Oct 20
@Anthony Castore thank you. I saw some really great results about 4 weeks ago, but the last 2 weeks things have come crashing down. I just had labs pulled last week so I'll be interested to see what they say.
1 like • Oct 21
@Simona Delucia I was actually thinking about that this weekend. What would I look at to see if my gut health is less than ideal?
Statement from Anthony Castore and AlchemIQ on the Bioglutide / Biomed Situation
Every industry has defining moments the ones that separate hype from principle and reveal who’s truly here for the long game. This is one of those moments for ours, and I want to be completely transparent about where we stand. Biomed Industries is the company credited with discovering Bioglutide (NA-931) and developing it as a next-generation GLP-based compound. Our raw materials came from the same supplier Biomed reportedly uses. Recently, serious accusations have surfaced against Biomed claims of fraudulent data, lack of publicly verifiable sequence information, and the absence of a disclosed CAS number or molecular structure. The accuser has raised valid scientific concerns that deserve to be addressed. At the same time, these allegations are new, and Biomed has not yet had the opportunity to publicly respond. That’s why we are pausing not panicking. Even in moments like this, our safeguards remain strong. We can fully document purity through HPLC and LC-MS, confirm sterility and endotoxin levels, and provide verified Certificates of Analysis. However, without a public reference structure or sequence, no lab including ours can confirm 100% molecular identity. We can verify that a compound is clean, sterile, and potent, but we can’t compare it to a molecule that’s never been fully published. To give some context, CB4211 is a great example of how innovation often moves faster than public documentation. This compound, developed for mitochondrial health and metabolic optimization, has been prescribed by physicians and compounded by pharmacies despite its structure, sequence, and CAS never being publicly released. That doesn’t make it ineffective or illegitimate it simply illustrates that, just like Bioglutide, the available data can only go so far. In both cases, these products are sourced, tested, and manufactured to the highest standards, with thorough purity and safety testing but without full structural transparency. That means identity and uniqueness are established through trust, testing, and outcomes rather than public disclosure. For all we know, CB4211 could be a more advanced form or reformulated analog of MOTS-c—or perhaps just a more expensive version under a new label. Until formal sequencing or patent releases are made public, no one can say for sure. This doesn’t discredit its value; it simply reminds us that in early-stage biotech, certainty often trails behind discovery. That’s why rigorous testing, ethical sourcing, and open communication about what is known and what isn’t are so vital.
2 likes • Oct 11
@Anthony Castore my boss has a saying, "If you're not trusting, you're not trustworthy." You have been trusting enough of all of us to welcome us into your community. I think your transparency has just added to the testimony of the type of person you are.
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Clay Fitzhugh
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65points to level up
@clay-fitzhugh-7466
Here to learn and grow in my fitness journey

Active 27m ago
Joined Aug 1, 2025
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