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Daily evidence-led peptide research, regulatory news, expert digest and explainers. Every claim sourced; no AI tells.
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Peptides for sexual function
PT-141 has phase 3 evidence and one narrow US approval, but the evidence does not support every libido or erectile-function claim made online.
Combining Selank with BPC-157 and TB-500
Selank targets anxiety via enkephalinase inhibition. BPC-157 and TB-500 are tissue-repair peptides. Here is what the literature says about combining them.
Tirzepatide vials: what the label says
Mounjaro and Zepbound use single-dose vials. Pooling drug between vials is not described in either label. Here is what the prescribing information says.
When retatrutide feels like it wore off
Day-to-day appetite is not a retatrutide dose meter. Trials used once-weekly dosing and planned escalation, not symptom-led midweek changes.
ACTH-fragment nootropics: what we know
Semax, Org 2766 and ACTH(4-10) itself come from one hormone. Here is what the class evidence shows in humans, and where it runs out.
Can I buy tirzepatide online legally?
Tirzepatide is prescription-only in the EU, UK and US, so a legal online purchase means a licensed pharmacy dispensing against a valid prescription.
Peptides for cognitive performance
No peptide has a controlled human trial showing cognitive enhancement in healthy adults. Here is what the Semax and Cerebrolysin record actually shows.
Thymosin peptides: what the class is
Thymosin alpha-1 and thymosin beta-4 share a name, not a structure. TB-500 is a fragment of one of them. BPC-157 is not a thymosin at all.
Does tirzepatide cause muscle loss?
Tirzepatide causes some lean mass loss. DXA data from SURMOUNT-1 show roughly 75% of weight lost is fat and 25% is lean mass.
Tirzepatide pregnancy: what the label says
The Mounjaro prescribing label flags insufficient human data and animal fetal harm. Here is what the label, animal studies, and early cohort data say.
HGH vs tesamorelin: what the research says
After six months of tesamorelin, is switching to rhGH the right call? The IVF literature on growth hormone adjuvant use is thinner than the community assumes.
Ipamorelin Q3 2026: what changed
Four peer-reviewed 2026 reviews name ipamorelin in clinical framing. Regulatory status is unchanged and the evidence gap remains open.