GLOW Peptide Dosage, Dosing Chart & Reconstitution Reference

Before You Reconstitute

The GLOW pen is a three-compound research blend: GHK-Cu 50mg, BPC-157 10mg, and TB-500 10mg, for 70 mg of total peptide solids in a single lyophilised charge. The blend rationale — why a copper peptide, an angiogenic-repair peptide, and an actin-migration peptide are stacked together — is covered in the GLOW blend rationale guide and the GHK-Cu / BPC-157 / TB-500 synergy article. This reference assumes you already know what the blend is and focuses only on the handling math.

Before adding any diluent, bring the device to room temperature, work on a clean surface, and swab the access stopper. The single most consequential decision happens before the needle goes in: how much diluent you add. Because all 70 mg of solids are fixed, the fill volume is the only variable that sets your final concentration — and, for a click pen, the mass that comes out per click.

Diluent Choice for a Mixed Blend

The standard multi-access diluent is bacteriostatic water — sterile water carrying 0.9% benzyl alcohol (9 mg/mL) as a preservative.^[1] The benzyl alcohol suppresses microbial proliferation between draws, which is why bacteriostatic water suits any device accessed more than once. The complication in the GLOW blend is GHK-Cu: the copper complex is additive-sensitive, and some workflows prefer preservative-free sterile water for copper peptides on stability grounds. BPC-157 and TB-500 are both routinely handled in bacteriostatic water.^[5] The practical reading is that diluent choice is a per-protocol trade-off — preservative convenience for a multi-access device versus minimising additives around the copper peptide — and that decision belongs to the lab, not to a generic instruction.

Choosing Reconstitution Volume

Fill volume is a trade-off between two competing goals, and for a 70 mg charge the spread is wide. The governing relationship is the same one used throughout peptide reconstitution: concentration (mg/mL) = total solids (mg) ÷ diluent volume (mL).^[2]

• Smaller fill volume (e.g. 1.0 mL → 70 mg/mL): a concentrated solution. Each click carries more mass, so fewer clicks are needed to dispense a given amount — but the per-click resolution is coarse, and a concentrated copper-peptide solution gives less margin for fine work.
• Larger fill volume (e.g. 3.5 mL → 20 mg/mL): a dilute solution. Each click carries less mass, giving finer resolution per click and easier handling, at the cost of needing more clicks for the same total and a longer column of solution exposed to storage stress.

A critical point that researchers often miss: fill volume does not change total recoverable mass. Whether you reconstitute into 1 mL or 3.5 mL, the device still holds 70 mg of solids. Fill volume only redistributes that fixed mass across a different number of clicks. The reconstitution calculator and the broader protocol calculator both encode this relationship so you can see the concentration and per-draw volume for any fill before you commit.

Mg-per-Click Math for a 70mg Pen

A click-metered pen advances the plunger a fixed linear distance per click, which dispenses a fixed volume per click — not a fixed mass. Mass per click therefore follows directly from concentration:

• Volume per click is a property of the device geometry (a constant, e.g. 0.05 mL/click on a fine pen).
• Mass per click = concentration (mg/mL) × volume per click (mL).
• Because concentration is set by fill volume, mass per click scales with fill volume: halve the fill volume and you double the mg per click.

To make the table below comparable across fills, it expresses output as the mass carried in a 0.1 mL draw (a convenient reference increment for a click pen — many fine pens advance roughly 0.05 mL/click, so 0.1 mL is about two clicks). Read this GLOW peptide dosing chart as concentration-versus-fill arithmetic, not as an administration schedule. The same arithmetic the table performs is what the reconstitution calculator automates for any target.

Note that the table reports the combined blend mass. Because the three peptides are co-formulated in a fixed 50:10:10 ratio, every draw carries that same proportion — roughly 71% GHK-Cu, 14% BPC-157, and 14% TB-500 of whatever total mass the draw contains. So the GHK-Cu peptide dosage math is simply 71% of the per-draw mass shown above — the copper component is never isolated from the blend. The blend cannot be fractionated by drawing differently; the ratio is locked at manufacture.

Worked Example

Suppose a protocol reconstitutes the GLOW pen into 2.0 mL of diluent. Walk the arithmetic:

• Concentration: 70 mg ÷ 2.0 mL = 35 mg/mL.
• Mass in a 0.1 mL draw: 35 mg/mL × 0.1 mL = 3.5 mg combined blend mass.
• Component split in that draw: 2.5 mg GHK-Cu, 0.5 mg BPC-157, 0.5 mg TB-500 (the fixed 50:10:10 ratio).
• Device capacity: a 2.0 mL fill yields twenty 0.1 mL draws before the solution is exhausted — 20 × 3.5 mg = 70 mg, confirming the math closes.

Now compare the same device reconstituted into 1.0 mL: concentration doubles to 70 mg/mL, the 0.1 mL draw now carries 7.0 mg, and the device yields ten such draws — still 70 mg total. This is the key intuition: fill volume trades resolution against draw count, never total mass. For arbitrary fills and targets, enter the 70 mg figure and your chosen diluent volume into the reconstitution calculator rather than doing this by hand each time — that calculator output is what defines a given GLOW peptide protocol's working concentration. These numbers are concentration arithmetic for an in-vitro workflow — they are not a recommended dose.

Storage & Stability After Reconstitution

Reconstitution starts a degradation clock. Lyophilised material is the stable state; once diluent is added, the hydrolytic and oxidative pathways that freeze-drying suppressed resume.^[6] For the GLOW blend specifically, two of the three components are oxidation-sensitive, which makes the in-solution window shorter than for a robust GLP-1 analog.

• Lyophilised (unmixed): store at −20°C, protected from UV light, until reconstitution.
• Reconstituted solution: hold at 2–8°C, protect from light, and minimise headspace to limit surface oxidation.
• GHK-Cu factor: the copper complex is oxidation-sensitive, and reconstituted copper-peptide solution typically carries the shortest usable window of the three components — treat it as the limiting compound.
• BPC-157 factor: also sensitive to oxidation; reconstituted BPC-157 is usually used promptly rather than held for the full month.
• Do not freeze-thaw the reconstituted solution: each freeze-thaw cycle denatures a fraction of peptide through ice-crystal and interfacial stress.

A pale-blue tint is expected from the GHK-Cu component; cloudiness, particulates, or loss of that colour are visual flags to discard and start fresh. Compound-specific in-solution windows for GHK-Cu, BPC-157, and TB-500 are tabulated in the peptide stability and storage guide; diluent dating and sterile technique are covered in the bacteriostatic water guide. Note that the GLOW pen product page is the source of truth for the current device format, pricing, and stock status.