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Castore: Built to Adapt

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TPC ARMY

187 members • $200/m

3 contributions to Castore: Built to Adapt
SLU - Bioavailable and Safe or NOT
Good morning everyone!! This came up in one of the groups I am a part of. I wanted to share it here to get Anthony and anyone else who we look to as an expert in this subject matters opinion. I know Anthony’s research contradicts the fact that the member of my group is saying SLU is not bioavailable. But the members research and thoughts are concerning. Can everyone share your thought on this and if there is any validity. I know many a RS has had great results with this compound. The below is copied from the group. SLU-PP is hydrophobic and must be dissolved in chemicals not safe for injection. For oral use, early member tests suggest that SLU-PP does not survive stomach acid and may break down into unsafe byproducts, including hydrazine-like fragments, which should not be ingested by humans. Initial data from Jano on the degradation testing for SLU-PP-332 in simulated stomach acid. https://janoshik.com/tests/87013-SLUPP332_PDDAB_DMSO_HCL_NAOH_H2O_SAMPLE_A_HFW3ZIDG7YN1 https://janoshik.com/tests/87014-SLUPP332_PDDAB_DMSO_HCL_NAOH_H2O_SAMPLE_B_XXH9UD6N8HGF Starting reagents were SLU-PP-332 and p-dimethylaminobenzaldehyde (p-DAB) in DMSO. Sample A was titrated to pH 1.5 with 0.1M hydrochloric acid in water and heated to 37C for 2 hours with constant stirring, then neutralized to pH ~6 with 0.1M sodium hydroxide. Sample B used the same starting reagents, but the heating step was performed without the addition of HCl. Instead, a mixture of 0.1M HCl+NaOH titrated to pH ~6 was added after heating to match the final dilution of sample A. Calculated dilution btw was 1.8mg/mL SLU-PP-332, looks like I got pretty close as sample B tested at 1.719mg/mL. The goal was 2mg/mL but titration is hard and I'm out of practice. Potential breakdown products of SLU-PP-332 are expected to be: 1-napthaldehyde, 4-hydroxybenzohydrazide (4-HBH). The latter can further break down to 4-hydroxybenzoic acid and hydrazine, which will complex with p-DAB to form the yellow azo dye p-dimethylaminobenzalazine. There may also be some complex formed between p-DAB and 4-HBH, I couldn't find this discussed in any literature I could find, though.
0 likes • Dec '25
Why don’t you take some and you’ll discover right away that it’s by bioavailable via oral administration. Contrary to popular opinion, it can also be reconstituted with regular BAC depending on how it synthesized. I’ve sent out my products for testing and would be willing to make a $10,000 be this is the case.
ATX-304
Whose used this? I have some, running 200mg a day, deffo sweat a bit more during cardio, if I combine it with SLU I get a noticeable increase in body temp. Not sure on dosing as see people saying once per day, multiple times etc. Anyone got experiences and share what they have found?
1 like • Dec '25
@John Cook understandable and I agree with you that makes total sense. It’s always important to start low and then titrate up. The dosing schedule would be determined by what your goal is in using it. Taking everything pre-workout could be beneficial, but it could also be beneficial to split up the dose to increase the amount of time the compound is in your system.
1 like • Dec '25
@Josh Large ATX is worthless in my opinion and a waste of money. It’s not a critique to anyone else suggesting it or selling it. I have just chosen to not keep items in our inventory I do not believe in unless they are specifically requested. Then I make some exceptions because I would rather people make sure they are buying something that is safe, sterile and properly dosed. 100mg-300mg a day seems to be the suggested dosing range.
peptide source
I’m wondering where everyone gets their injectible peptides from? Anthony, does SSRP have a preferred source that us in the community could purchase from? Any online clinic where a virtual consult could be done and the peptides prescribed from a compounding pharmacy and shipped to our residence? I have a functional medicine doctor in miami but he requires you pick them up and they are already reconstituted which affects their expiration.
1 like • Dec '25
https://parabolicpeptides.com/
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Keith Greiner
2
14points to level up
@keith-greiner-4040
I love Peptides and I’m looking forward to learning more from Alex and by joining this group.

Active 44m ago
Joined Dec 7, 2025
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