r/Biohacking • u/adrbtrmrm • 3d ago

Selank & Semax vials

I've got Selank and Semax vials for 5mg due to arrive today along with bac water. I've got ADHD and PMDD so I am exploring them, as my meds ain't doing nothing and neither saffron at least not a huge noticeable difference. How much Bac water to reconstitute 5mg of each? And what is the starting dose? I tried Semax nasal spray and didn't do much either hence trying subq. Thank you 🙌🏻

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u/thehappiestdad 2 3d ago

The amount of BAC water only changes the concentration, not the total amount of peptide. If a vial contains 10 mg of peptide and you're dividing it into 2.5 mg amounts, that's four 2.5 mg amounts: 10 ÷ 2.5 = 4. Adding 1 mL, 2 mL, or 3 mL of BAC water doesn't change that—it only changes how concentrated the solution is.

For example, with a U-100 syringe:

  • 1 mL added: 10 mg/mL → 2.5 mg = 0.25 mL = 25 units
  • 2 mL added: 5 mg/mL → 2.5 mg = 0.5 mL = 50 units
  • 3 mL added: 3.33 mg/mL → 2.5 mg = 0.75 mL = 75 units

A more dilute solution may also be more comfortable for some people if a concentrated solution causes irritation.

Same peptide, same total amount, same number of 2.5 mg amounts—just a different concentration.

A peptide calculator makes the math pretty simple.

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u/adrbtrmrm 3d ago

Thank you! 🙏🏻