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c/researchpeptides·posted 8 months ago by u/phase_two_pete

am I the only one who found TB-500 harder than the injections

Discussion Receipts ×9 Cold Box ×1

Right, the TB-500 question again, but with numbers this time.

I have 6 data points over 28 weeks. The pattern is consistent enough that I do not think it is chance, and boring enough that nobody is going to screenshot it, which is usually a good sign.

The thing I would flag for anyone new: the effect I am describing showed up at week 13, not week 62. People give up long before the interesting part.

Interested in whether this matches other people's logs or whether I am an outlier.

6,201 up / 4,613 down57% upvoted56 commentsid 1nz7yp15 Nov 2025

56 comments

30 in this archive, depth 5

best — the order this archive was captured in

u/anya_moreau236 points·8 months ago·edited

thymosin fragments, GH secretagogues, secretagogue, long tail

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u/phase_two_peteOP186 points·8 months ago

Came off after 96 weeks for financial reasons. Regained about a third over the following year. Back on now at a much lower dose.

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u/britt_zamora154 points·8 months ago·edited

the thymosin literature is thin on humans

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u/two_mil_or_one126 points·8 months ago

not approved for human use, full stop

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[deleted]57 points·8 months ago

[deleted]

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u/tb500_tangent36 points·8 months ago

supply-chain naming is a mess, ask for HPLC

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u/cold_chromatogram_only12 points·8 months ago

the research peptides literature is thin on humans

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u/idris_iyer30 points·8 months ago

thymosin fragments, GH secretagogues, secretagogue, long tail

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u/dario_vermeulen14 points·8 months ago

This is correct. Name it precisely.

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u/phase_two_peteOP10 points·8 months ago

The thing nobody prepared me for was the quiet. Not the appetite, the quiet. The constant negotiation in my head about food just stopped.

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u/honest_syringe2448 points·8 months ago

everything else in the vial drawer, identity

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u/rui_only_ro152 points·8 months ago

Three years on this site and the questions have not changed at all. Which is depressing or reassuring depending on the day.

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u/piotr_grimaldi106 points·8 months ago

You have restated the marketing copy. What is the actual substance here.

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u/vendorinvestigate_vic81 points·8 months ago

research use only, handling and analysis, not administration

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u/marit_mensa85 points·8 months ago

New Zealand here. Waited 21 months on a list, gave up, went private, and the total cost was roughly what I expected.

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u/santiago_rasmussen-20 points·8 months ago

The thing nobody prepared me for was the quiet. Not the appetite, the quiet. The constant negotiation in my head about food just stopped.

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u/throwaway_wl202620 points·8 months ago

supply-chain naming is a mess, ask for HPLC

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u/hplc_hobbyistruns their own column9 points·8 months ago

Yeah, identity is the first question.

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u/piotr_grimaldi60 points·8 months ago

the 9-letter analogs are speculative

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u/iman_castellanos42 points·8 months ago

Water content matters more than people think. If a vial is carrying residual moisture, your "10mg" is not 10mg of peptide.

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u/heart_rate_bump11 points·8 months ago

Inter-lab variance on this kind of assay is routinely 1–2 points. Different column, different gradient, different integration.

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u/tuva_iyer32 points·8 months ago

No. This is the kind of confident post that gets copied into a screenshot and repeated for years. Where is the evidence.

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u/due_diligence_dee21 points·8 months ago

Has anyone actually got this in writing, or is it forum lore at this point?

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u/santiago_rasmussen20 points·8 months ago

research use only, handling and analysis, not administration

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u/tired_ledger_notes10 points·8 months ago

research use only, handling and analysis, not administration

Disagree on that part. 99.2% and 99.3% on the same vial is normal.

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u/britt_zamora3 points·8 months ago

name the compound precisely, TB-500 and Thymosin Beta-4 are not the same

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u/phase_two_peteOP15 points·8 months ago

This is correct. Name it precisely.

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u/tuva_iyer27 points·8 months ago·edited

This is correct. Name it precisely.

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u/due_diligence_dee7 points·8 months ago

research use only, handling and analysis, not administration

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The wider research-peptide catalogue: thymosin fragments, GH secretagogues, melanocortin agonists, and the long tail of three-letter analogs. Focus on identity verification, handling and the state of the evidence — not on protocols, because these are not approved for human use.

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  1. Research use only. Handling and analysis, not administration.
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