Wolverine Peptide Blend Vial Size: 20 mg to 40 mg Vials

Wolverine peptide blend vial size is a supply question, not a draw-math question: how much total BPC-157 and TB-500 does a given vial actually contain, and how far does that stretch across a protocol? Vial size is fixed at manufacture and printed in milligrams on the label, but what it means day to day depends on the target dose and the water volume chosen at reconstitution. This guide separates what vial size does and doesn't determine for a Wolverine blend. It is a research reference, not medical advice.

Common Wolverine vial sizes

Wolverine ships as BPC-157 and TB-500 premixed in one lyophilized vial, and research suppliers commonly offer it at two totals:

Vial size	Composition (1:1 ratio)
20 mg	10 mg BPC-157 / 10 mg TB-500
40 mg	20 mg BPC-157 / 20 mg TB-500

Both sizes hold the same even split between the two peptides — a 20 mg vial is simply half of a 40 mg vial's content, not a different formula. Labeling isn't standardized across every supplier, so treat these two figures as common reference points and confirm the actual mg total on your own vial before running any calculation.

Vial size sets total mg, not the size of one draw

The point worth separating out first: vial size determines how many total milligrams of blend you have to work with across the whole vial, not how large any single draw is. A 500 mcg dose is a 500 mcg dose whether it comes from a 20 mg vial or a 40 mg vial. What changes is how many 500 mcg draws the vial can supply before it's empty. That relationship is one division:

Doses per vial = vial mass (mcg) ÷ target dose (mcg)

Worked example: doses per vial

Compare the two common sizes at a fixed 500 mcg target dose. Both vial totals need converting from mg to mcg first (1 mg = 1,000 mcg):

• 20 mg vial: 20,000 mcg ÷ 500 mcg = 40 doses
• 40 mg vial: 40,000 mcg ÷ 500 mcg = 80 doses

Doubling the vial size exactly doubles the doses available, since the target dose didn't change. Both counts divide evenly here because 500 mcg is a clean fraction of both totals — a different dose size might not split evenly, in which case the final draw would carry less than the full target amount.

Vial size and the fixed 1:1 ratio

A Wolverine vial adds one wrinkle a single-peptide vial doesn't have: every draw splits across two compounds at a fixed 1:1 ratio, and that split holds regardless of which vial size it came from. Take the same 500 mcg draw from either vial:

• BPC-157: 500 mcg × (10 ÷ 20) = 250 mcg
• TB-500: 500 mcg × (10 ÷ 20) = 250 mcg

Those two figures sum back to the 500 mcg total, and they come out identical whether the vial was 20 mg or 40 mg. Vial size changes the count of draws remaining in the vial. It never changes the proportion of BPC-157 and TB-500 inside any single draw — that proportion is fixed the moment the vial was lyophilized.

Water volume changes the draw, not the count

Vial size and water volume are separate variables, and it's easy to conflate them. Reconstitute a 20 mg vial two different ways and compare a 500 mcg draw:

Vial size	Water added	Concentration	500 mcg dose (units, U-100)	Doses per vial
20 mg	2 mL	10,000 mcg/mL	5 units	40
20 mg	1 mL	20,000 mcg/mL	2.5 units	40

Step through the second row. Concentration: 20 mg ÷ 1 mL = 20 mg/mL, or 20,000 mcg/mL. Draw volume: 500 mcg ÷ 20,000 mcg/mL = 0.025 mL. Syringe units on a U-100 insulin syringe (1 mL = 100 units): 0.025 mL × 100 = 2.5 units. Both rows come from the same 20 mg vial and the same 500 mcg target dose, so both hold exactly 40 doses at that dose size. Only the unit reading on the syringe moved — a question of which mark is easier to draw accurately, not a question of supply.

Matching vial size to protocol length

Sizing a vial (or several) to a planned protocol is the same formula worked backward:

Total mcg needed = number of planned doses × dose size (mcg)

Worked example. A protocol calling for a 500 mcg dose once daily for eight weeks runs 56 days, so it needs 56 doses. Total mcg required: 56 × 500 mcg = 28,000 mcg, or 28 mg. A single 40 mg Wolverine vial supplies 80 doses (40,000 mcg ÷ 500 mcg), which covers the 56-dose protocol with 24 doses, or 12 mg, left over. A 20 mg vial alone supplies only 40 doses — 16 short of the 56 needed — so it wouldn't cover the full run by itself. Running this arithmetic before ordering turns "which vial size should I buy" into a total-mcg question with one answer, rather than a guess.

Common mistakes

• Assuming a bigger vial means a bigger single dose. Vial size sets total supply; the target dose sets the size of each draw.
• Forgetting that water volume doesn't change how many doses a vial holds. It changes the mL and unit reading per draw, not the count of draws remaining.
• Mixing up mg and mcg when comparing vial size to dose size. The vial label reads in milligrams, but Wolverine doses are typically referenced in micrograms (1 mg = 1,000 mcg). Convert both to the same unit before dividing.
• Ordering by vial count instead of total mg. Two 20 mg vials and one 40 mg vial contain the same total blend — plan around milligrams, not the number of vials in the box.

Evidence level

BPC-157 and TB-500 are each studied individually in preclinical research — largely animal models and in-vitro work — rather than large controlled human trials. Neither is FDA-approved for human use, and packaging them together into a Wolverine vial of any size doesn't change that evidence picture for either component. Treat Wolverine, in either common vial size, as a research compound rather than a proven human therapeutic.

Use the calculator

The doses-per-vial arithmetic above is two divisions and doesn't need a tool. Where a tool earns its keep is the per-draw conversion: enter your vial's actual total mg, the water volume you added, and a target dose into the peptide reconstitution calculator to get the exact mL and syringe units for that draw, or run reverse mode to find the water volume that lands a dose on a whole unit mark. For the component-ratio math behind a Wolverine draw, see the Wolverine peptide blend dosage guide. For the same vial-size logic applied to a related three-peptide blend, see the GLOW peptide blend vial size guide.