INTERACTIVE TOOLSCOMPUTED LOCALLYZERO TRACKING

BRING A SCALE.
NOT A GUESS.

Four calculators. Zero sign-ups. Everything runs in your browser — nothing is logged, stored, or phoned home. Dosing, reconstitution, half-life, stacks. Peptide math that actually adds up.

DOSING

mg · kg · μg → units

DOSING CALCULATOR.

§ 01

From vial to draw.

Pick a compound (or enter custom values). We compute the concentration, then the draw volume for your target dose on an insulin or tuberculin syringe.

Works in both μg dosing (for peptides like BPC-157, Ipamorelin) and mg dosing (for GLP-1s).

TIP. 1 "unit" on a U-100 insulin syringe = 0.01 mL. So 10 units = 0.1 mL. Keep a U-100 on hand and skip tuberculin math entirely for doses under 1 mL.

PEPGAINS · DOSING

LOCAL ONLY

● Computed locally · nothing logged⚠ RESEARCH USE ONLY

RECONSTITUTION HELPER.

§ 02

Enter your vial and diluent, and we'll give you a full draw-volume chart for common target doses — so you can reach for the card instead of doing math mid-protocol.

RECON · INPUTS

Vial mass (mg)

Diluent (mL)

YOUR CONCENTRATION

2500 μg/mL

= 2.50 mg/mL · Stable 28d @ 2–8°C · protect from light

DRAW VOLUME CHART

U-100 SYRINGE

Target Dose	Units	mL	Doses / vial
100 μg	4.0u	0.04 mL	50 doses
200 μg	8.0u	0.08 mL	25 doses
250 μg	10.0u	0.10 mL	20 doses
500 μg	20.0u	0.20 mL	10 doses
1 mg	40.0u	0.40 mL	5 doses
2 mg	80.0u	0.80 mL	2 doses
2.5 mg	100.0u	1.00 mL	2 doses
5 mg	>1mL	2.00 mL	1 doses

● Updates as you type⚠ CHECK TWICE · INJECT ONCE

HALF-LIFE TRACKER

§ 03

See how peptide levels rise and fall over time with your chosen dosing schedule. Visualize steady-state build-up, identify trough periods, and spot when you're overshooting.

PK PARAMETERS

Dose (mg)

Half-life (hours)

Interval (hr)

# of doses

Preset

◆ FIG · SERUM LEVEL PROJECTION

Serum level (mg)

Dose events

Steady state

1.14

Cmax (mg)

1.14

Steady state

1.14×

Accumulation

STACK COMPATIBILITY.

§ 04

At-a-glance matrix showing common co-administration pairings. Green = synergistic, white = compatible, amber = caution, red = avoid. Hover any cell for the reasoning.

WITH →	BPC-157	TB-500	GHK-Cu	Ipa	CJC-1295	Sema	Tirz
BPC-157	—	★ PAIRHealing	PAIRWound	OK	OK	OK	OK
TB-500	★ PAIRHealing	—	OK	OK	OK	OK	OK
GHK-Cu	PAIRWound	OK	—	OK	OK	OK	OK
Ipa	OK	OK	OK	—	★ PAIRGH pulse	CAUTIONGI	CAUTIONGI
CJC-1295	OK	OK	OK	★ PAIRGH pulse	—	OK	OK
Sema	OK	OK	OK	CAUTIONGI	OK	—	AVOIDGLP-1 redundant
Tirz	OK	OK	OK	CAUTIONGI	OK	AVOIDGLP-1 redundant	—

PAIR · Synergistic · commonly co-administered

OK · No known conflict

CAUTION · Mechanism overlap · additive effects

AVOID · Receptor redundancy · compounded risk

⚠ HEADS UP.

These tools are research aids, not medical advice. Dose calculations assume accurate vial labeling — always verify with a COA from a reputable source. Always consult a qualified healthcare provider before using any peptide. Pepgains doesn't sell peptides and earns no revenue from any dose you compute here.

BRING A SCALE.NOT A GUESS.