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207

TB-500 and Thymosin Beta-4 are not the same product and vendors know that

Caution

Posting this because I searched for it and got nothing useful.

Setup: 0.25mg, week 80, constipation present but not ruining anything. I changed exactly one variable — handling — and tracked it for 24 weeks.

Result: a difference, but a small one, and well inside what I would call noise if someone else posted it. So I am putting it here rather than presenting it as a finding. If two or three other people have done the same thing we might actually learn something.

Not medical advice, obviously. This is one person with a spreadsheet.

266 up / 59 down82% upvoted23 commentsid 1ajvm925 Jul 2026

23 comments

18 in this archive, depth 5

best — the order this archive was captured in

u/dario_vermeulen28 points·4 days ago·edited
this is the answer
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u/chidi_yilmaz23 points·4 days 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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[deleted]8 points·4 days ago

[deleted]

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u/aksel_kjaer17 points·4 days ago

Which country? Half the answers in this thread only apply in the Netherlands.

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u/rui_only_roMOD12 points·3 days ago

Flair changed to match the content. Read the sidebar before posting next time and we are square.

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u/line_bergstrom17 points·3 days ago

Flair changed to match the content.

Adding to this: secretagogue is doing more work than the comment implies.

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u/tidy_vialdrawer_pls9 points·3 days ago

purity and identity are two questions

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u/hassan_ostergaard4 points·2 days ago·edited

research use only, handling and analysis, not administration

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u/hplc_hobbyistruns their own column12 points·3 days ago

This is correct. Name it precisely.

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u/ahmed_fonseca8 points·4 days ago

Mechanistically the bit that matters is TB-500. It explains most of the early profile and a decent chunk of the outcome.

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u/yusuf_achebe4 points·3 days ago

Mechanistically the bit that matters is TB-500.

Counter-anecdote: opposite result, same dose. Which mostly tells us the variance is huge.

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u/nayeli_iyer-4 points·3 days ago

The evidence standard in c/vendorvetting gets called too strict about once a month, and every time, the thread ends with the complainant agreeing.

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u/controversial_only1 point·2 days ago

This is correct. Name it precisely.

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u/anya_moreau1 point·2 days ago

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

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u/gustav_solberg1 point·2 days ago

everything else in the vial drawer, thymosin

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u/aa_analysis_andyOP1 point·2 days ago

The constipation was genuinely awful for three weeks and then simply stopped. I know that is not useful information, but it is what happened.

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u/nadia_kjaer1 point·2 days ago

That is net peptide content, not purity. Different number, different meaning.

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u/aa_analysis_andyOP1 point·2 days ago

thymosin fragments, GH secretagogues, TB-500, long tail

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  1. Research use only. Handling and analysis, not administration.
  2. Name the compound precisely. "TB-500" and "Thymosin Beta-4" are not the same product.
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