How-to: dosing and stacking math

Tools for the arithmetic

• Calculator

  Peptide Reconstitution Calculator

  A dose to syringe units: vial amount and water volume to concentration, then the amount you enter to a U-100 reading, with the formula shown.

• Calculator

  Peptide Blend Calculator

  Pre-mixed vials, one component at a time from the vial's own split — the label's total cannot be used for any single peptide.

• Tool

  Peptide Tracker

  Records vial size, water volume and units drawn so every entry is reconstructable; weekly grid and calendar export. Nothing uploaded.

Dosing and stacking math, page by page

The reference pages that walk through the calculation rather than run it.

• Peptide Reconstitution Calculator Guide

  Field by field: what the vial amount, the water volume and the target amount do to the concentration and the syringe reading.

• Reconstitution Math Examples

  Worked from label to syringe, step by step — the same dose at several concentrations, and the mistakes the arithmetic is prone to.

• Peptide Reconstitution Chart

  Reading a syringe for a given amount: the concentration every common vial size reaches, what one unit holds, and the conversion back to units.

• Printable

  Peptide Stack Sheet

  The printable stack reference: named-blend components, the worked blend example and a blank multi-compound log.

• 

  Pillar C — how-to (GHK-Cu injection)

  How GHK-Cu Is Injected: Sites, Frequency and the Record

  How GHK-Cu is injected, from the record: what clinic pages state about sites and frequency, the human injection evidence (none), the sting, and units per vial.

• 

  Pillar C — how-to (CJC-1295 injection)

  How CJC-1295 Is Injected: Route, Frequency and the Record

  How CJC-1295 is injected, from the record: the route in its two human studies, DAC weekly versus no-DAC daily, what labels of related drugs state, and units.

• 

  Pillar C — how-to (TB-500 injection)

  Where TB-500 Is Injected: Routes, Sites and the Record

  Where TB-500 is injected, from the record: the routes in the human and animal studies, the sites clinic pages name, the 'near the injury' claim, and units.

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  Pillar F — conversions (mcg to units)

  Mcg to Units: Micrograms on a U-100 Syringe, Both Ways

  Micrograms to U-100 syringe units and back at the concentrations peptide vials produce, what one unit holds, and the one FDA label that printed the table.

• 

  Pillar C — how-to (sermorelin injection)

  How Sermorelin Is Injected: Route, Timing and Units

  How sermorelin is injected, from the record: the approved product's route and bedtime timing, the sites compounders name, and the volumes in units.

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  Pillar C — how-to (glutathione injection)

  How Glutathione Is Injected: IV, IM, Under the Skin, Volumes

  How injectable glutathione is given, from the record: no FDA label, the routes trials and compounders state, why volume decides the route, and the outbreak.

• 

  Pillar D — how-to about dosing (Zepbound vial)

  Zepbound Vial: Drawing a Dose With a Syringe

  How the Zepbound single-dose and multi-dose vials are drawn per the label: 0.5 or 0.6 mL, the syringe it names, the air step, and what a misread line costs.

• 

  Pillar D — how-to about dosing (Zepbound KwikPen)

  Zepbound KwikPen: How the 4-Dose Pen Delivers a Dose

  The Zepbound KwikPen per the label: four 0.6 mL doses, six strengths, priming before each dose, the dial-to-stop rule and what the leftover liquid is.

• 

  Pillar F — conversions (mcg to mL)

  Mcg to mL: Micrograms to Millilitres for Peptide Vials

  Mcg and mL measure different things, so the conversion needs the concentration. The formula, tables for common amounts and vials, and a labelled example.

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  Pillar D — how-to (doses per vial)

  Doses per Vial: How Many Doses in a 10 mg Vial

  How many doses a peptide vial holds: the one division, tables for tirzepatide, semaglutide, retatrutide and BPC-157 vials, and what the labelled devices state.

• 

  Pillar D — how-to (inject bpc-157)

  How BPC-157 Is Injected: Routes, Sites and the Record

  How BPC-157 is injected, from the record: the routes trials register, the one knee-injection chart review, an IV pilot in two people, site claims checked.

• 

  Pillar F — dose arithmetic (mounjaro click chart)

  Mounjaro Pen Clicks: The KwikPen Click Chart Checked

  Mounjaro KwikPen click charts checked against the label: 0.6 mL per dose, mg per click at every pen strength, the priming clicks and the leftover medicine.

• 

  Pillar D — injection how-to (NAD+)

  Where to Inject NAD+: Routes, Sites and Volumes

  Where NAD+ is injected, from the record: no label, one trial comparing routes, what compounders state, and why the volume decides the route.

• 

  Pillar D — injection how-to (tesamorelin)

  Where to Inject Tesamorelin: Site, Volume and Units

  The EGRIFTA SV and EGRIFTA WR labels on where tesamorelin is injected, the volume each formulation draws, the vial arithmetic, and the doses in units.

• 

  Pillar F — conversions (mg to mL)

  Mg to mL: How Many mL Is 5 mg of a Peptide

  Milligrams to millilitres needs the concentration, not a density. Tables at 2.5 to 20 mg/mL, mL back to mg, and the volumes the GLP-1 pens deliver.

• 

  Pillar F — conversions (IU to mg)

  IU to mg: Why Each Peptide Has Its Own Conversion

  An IU measures activity, not mass. The WHO reference factors for insulin, growth hormone and oxytocin, why hCG has none, and IU versus syringe units.

• 

  Pillar D — injection how-to (semaglutide)

  Where to Inject Semaglutide: Sites, Pens and Units

  The Ozempic and Wegovy labels' injection sites, timing and missed-dose rules, the volume each pen delivers, and how a semaglutide dose reads in units on a vial.

• 

  Pillar D — injection how-to (retatrutide)

  How to Inject Retatrutide: What the Trials Record

  No retatrutide label exists. The route, schedule and injection-site study in Lilly's trial records, what is still unpublished, and the trial doses in units.

• 

  Pillar D — injection how-to (tirzepatide)

  Where to Inject Tirzepatide: Sites and Units

  The tirzepatide label's injection sites, rotation rule and timing, and how a dose reads in units on a vial and syringe. Reported from the label.

• 

  Pillar F — conversions (mg to mcg)

  Mg to Mcg: Milligrams to Micrograms for Peptide Vials

  1 mg = 1,000 mcg. Conversion tables for the amounts searched most, what a vial labelled in mg holds in mcg, and the mcg-per-mL step that decides units.

• 

  Pillar D — how-to (dosing frequency and half-lives)

  Peptide Dosing Frequency: Half-Lives Against Schedules

  Measured half-lives for tesamorelin, BPC-157, TB-500, PT-141, cagrilintide, NAD+ and others, each beside the schedule its label or trials used, with sources.

• 

  Pillar F — dose arithmetic (ozempic click chart)

  Ozempic Pen Clicks: Why the Click Charts Disagree

  Ozempic click charts checked against the label: each pen's strength in mg/mL, the volume of every dose, and why 18 clicks is half as much on today's red pen.

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  Pillar F — dose arithmetic (mg to units)

  Mg to Units: How Many Units Is 2.5 mg on a U-100 Syringe

  Milligrams to U-100 syringe units for GLP-1 amounts from 0.25 to 15 mg at 2.5, 5, 10 and 20 mg/mL, the one formula, and the three tenfold misreadings.

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  Pillar D — how-to about dosing and stacking

  Syringes for Peptides: Gauge, Length, Barrel and Dead Space

  Insulin syringe sizes as makers and pharmacy references describe them: 0.3, 0.5 and 1 mL barrels, 27 to 31 gauge, 6 to 16 mm needles, and measured dead space.

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  Pillar D — how-to about dosing and stacking

  Insulin Syringe Units: How Many Units in a mL, U-100 vs U-40

  How many units are in 1 mL on U-100 and U-40 syringes, what one unit is in mL, the 0.3, 0.5 and 1 mL barrels, and mcg to units at each concentration.

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  Pillar D — how-to about dosing and stacking

  How to Inject Peptides: Sites, Angle and the Units per Dose

  The subcutaneous procedure as the Ozempic, Mounjaro, Zepbound and Egrifta labels and nursing references describe it, with the syringe reading for a dose.