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Comparisons and buying guides

The questions people actually search before they buy. Evidence first, prices stated plainly, no rankings for sale.

BPC-157, TB-500, KPV and GHK-Cu blend vial from BioLongevity Labs

BPC-157 vs TB-500: what the research actually compares

The two peptides get stacked together constantly, but the evidence behind them is not the same shape, and neither is the price.

11 min readRead it

Buying guides

How to vet a peptide vendor: seven checks before you buy

Almost every vendor in this category makes the same four claims. Here is how to tell which of them you can actually check.

12 min readRead it

Person applying a dropper serum in front of a bathroom mirror

Skin

Copper peptides for skin: what GHK-Cu can and cannot do

One of the few compounds in this category you can legally buy, put on your face, and find real published work behind.

10 min readRead it

Supplement tub lying on its side with a scoop of powder beside it

Performance

When to take creatine, and why the timing barely matters

The most common creatine question has the least interesting answer, and that's genuinely good news for anyone taking it.

9 min readRead it

Person asleep in bed at night wearing a sleep mask

Stress & sleep

Best supplements for sleep, ranked by how good the evidence is

Four popular options, ordered by how much human trial data sits behind them rather than by how loudly they're marketed.

11 min readRead it

Questions these guides answer

Supplement and peptide buying guides, written for the decision

These pieces cover the comparisons people run before spending money. Which of two compounds has more research behind it. What a peptide Certificate of Analysis should contain. How to tell a transparent vendor from one that's simply good at marketing.

Want dosage rather than vendor comparison? The supplement guides cover creatine monohydrate, vitamin D3, omega-3 EPA and DHA, magnesium glycinate and ashwagandha, each graded by trial evidence. The ranked product picks apply the same documentation tests to specific listings.