GHK-Cu 50mg vs 100mg: Which Vial to Buy

When you go to buy GHK-Cu, one of the first choices is vial size. The two most common options are a 50mg vial and a 100mg vial. They contain the same copper peptide at the same quality; the difference is quantity, cost efficiency, and how they fit your research plan. Here is how to decide.

The short answer

The 100mg vial almost always costs less per milligram than the 50mg vial. If you already know you will use the material, the larger vial is the better value. The 50mg vial makes sense when you are trying GHK-Cu for the first time, running a small single-batch protocol, or want to keep the amount of reconstituted material you hold at any one time smaller.

Cost per milligram is the number that matters

Vials are priced per unit, but the figure worth comparing is the price divided by the milligrams inside. Larger vials carry the same filling, testing, and shipping overhead spread across more peptide, so the per-milligram cost drops. Before you buy, do the quick division on both vial sizes; the 100mg option typically wins on that metric.

How vial size interacts with shipping

At LYFE Science, shipping is a flat $25 across Canada and free on orders over $150. That changes the math on vial size. Two separate 50mg orders can mean paying to ship twice, while a single larger order, or a 100mg vial bundled with other items, can clear the $150 threshold and ship free. If you are going to use the material anyway, consolidating into fewer, larger orders is usually the cheaper path overall.

Storage and stability

GHK-Cu ships as a lyophilised powder and is stable in that form for handling and transit. A 100mg vial gives you more total material without changing how you store the sealed, unopened vial. If you prefer to keep a smaller quantity on hand at any given time, the 50mg vial lets you do that and reorder as your work progresses.

Which should a first-time buyer pick?

If this is your introduction to GHK-Cu, the 50mg vial is a low-commitment way to start. If you have worked with the compound before and know it fits your program, go straight to the 100mg vial and capture the better per-milligram price. Either way, the peptide itself is identical: each lot is verified by HPLC and mass spectrometry, with a COA available per lot.

Matching vial size to your research plan

The cleanest way to choose is to work backwards from your plan rather than from the price tag. Ask yourself how much GHK-Cu your work will realistically consume, and over what time frame. A short, single-batch protocol rarely needs 100mg on hand, so the 50mg vial keeps things tidy. A longer program, or one you already know you will repeat, benefits from buying the larger vial once instead of reordering the smaller one several times and paying shipping each round.

There is also a simple convenience angle. Fewer orders means fewer reorder decisions, fewer shipments to track, and one less thing to run out of mid-project. For established research plans, the 100mg vial is as much about workflow as it is about cost per milligram.

What both vials have in common

Regardless of which size you pick, the fundamentals do not change. Both ship as a lyophilised powder in neutral, unbranded packaging. Both are dispatched same day when you pay before noon ET, and both reach most of Canada within 1-3 business days by Canada Post. Payment is by Interac e-Transfer or crypto either way. The only variables you are really choosing between are quantity and per-milligram value.

Quality is the same at both sizes

It is worth stating plainly, because it is the part buyers worry about most: the 50mg and 100mg vials are the same GHK-Cu from the same tested lots. You are not trading quality for quantity when you size up. You are only changing how much you buy and how often you reorder.

Ready to choose your vial size? Both are in stock and ship same day when you pay before noon ET.

Buy GHK-Cu in Canada