Know what you are taking.
Supplements, plainly labelled
The number that matters, on the front.
Most bottles shout the compound weight. We lead with the elemental dose — the part your body actually gets — plus named forms, no proprietary blends, and free US shipping.
Read the label like this
Osterly Market
Magnesium Glycinate
What the bottle shouts
1,000 mg
Weight of the whole compound
What you actually get
141 mg
Elemental magnesium
Elemental share14.1%
Elemental dose statedFree US shippingNamed strains and formsNo proprietary blendsThird-party testedCertificate of Analysis on request
Shop by goal
Six aisles, colour-coded, plus the peptide range we are building next. Pick the one that matches why you are here.
Daily Foundations
The everyday basics — magnesium, vitamin D, a multivitamin that names its doses.
BrowseSleep & Calm
Magnesium forms, L-theanine and glycine, with the actual milligrams shown.
BrowseEnergy & Focus
B vitamins and adaptogens. Named extracts and ratios, never a "blend".
BrowseImmunity
Vitamin C, D and zinc — with the elemental zinc figure, not just the salt weight.
BrowseJoint & Muscle
Collagen, creatine and glucosamine at doses the research actually used.
BrowseGut & Digestion
Probiotics with named strains and CFU counts, plus fibre and enzymes.
BrowseSkin PeptidesComing soon
Not open yet. When it is, topical peptides will be listed by their INCI name with the real peptide concentration printed next to the blend percentage — a serum that says “10% Matrixyl 3000” holds about 0.005% peptide, and we intend to show you both numbers. We are still looking for suppliers willing to state theirs.
Read the standardOn price
Yes, we cost a little more.
We would rather carry forty things we can stand behind than four thousand we cannot. Quality over quantity is not a slogan here — it is the reason the shelf is short and the reason the price is what it is.
And some of the gap is not really a gap at all. Here is exactly where it goes.
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Shipping is already in the price
A cheaper sticker with $8 postage added at checkout is not cheaper. US shipping is built into every price on this site, so the number on the product page is the number you pay.
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There is no permanent sale
We do not print an inflated was-price so we can cross it out. Nothing here is 60% off forever. The price is the price, and it is the same on a Tuesday as it is on Black Friday.
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Compare the dose, not the bottle
Half the price for half the elemental dose is not a saving — it is the same money for less of the thing you came for. We print the elemental figure on the front precisely so you can do that maths before you buy.
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Named ingredients cost more than blends
A proprietary blend lets a label hide how little of the expensive ingredient is actually in there. Ours name every ingredient with its own dose, which removes that hiding place — and the cheaper option along with it.
What actually backs this up
Three phrases the supplement aisle throws around constantly. Here is exactly what each one means for what you are buying, including what it does not mean.
FDA-registered facility
The facility that manufactures our products is registered with the FDA and subject to inspection.
What it is not
FDA approval. No dietary supplement is FDA approved — the FDA has no authority to approve one before it is sold, and any brand that tells you otherwise is wrong. Registration means the facility is on the record and can be inspected.
Third-party GMP certified
Good Manufacturing Practice certification, audited by an independent certifying body rather than self-declared by the manufacturer.
What it covers
How a product is made, tested, documented and traced — the part you cannot judge by looking at the bottle. It is not a statement about whether the ingredient works.
Third-party tested
Batches are tested by an outside laboratory for identity, potency and contaminants. Certificate of Analysis available on request — email us and we will send it.
Why it matters here
Potency testing is what confirms the elemental dose printed on the front of the label is the dose actually in the capsule. Without it, that number is a claim rather than a measurement.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease. Nothing on this site is medical advice — read the label and speak to your doctor or pharmacist if you are unsure.
Most labels lead with the bigger number.
A 1,000 mg magnesium glycinate capsule contains roughly 141 mg of actual magnesium. Both numbers are true. Only one of them is the reason you bought it.
141 mg
Elemental magnesium in a 1,000 mg capsule — the figure we print on the front
14.1%
Of magnesium glycinate by weight is actual magnesium
0
Proprietary blends. Every ingredient is named with its own dose
14 days
Worst-case delivery, door to door, with shipping already in the price
What customers said
Reviews from customers of our previous store, on the same product line.
“I’ve really enjoyed using the Magnesium Glycinate, Vitamin D, and Multivitamin products. I like how simple they are to include in my daily routine, and the products feel like a convenient way to keep track of the vitamins and minerals I’m trying to get. Overall, I’m really happy with how the products are and would definitely recommend them as a convenient supplement option.”
Emily Carter
“I was impressed with the selection of supplements, especially the Magnesium Glycinate and Multivitamin. Everything is easy to understand and fits nicely into a daily routine. The products have a clean, straightforward presentation, and I think they would be a great choice for someone looking for a simple supplement routine. Comparing the supplements available to those on Amazon, these are MUCH better.”
Daniel Brooks
“I really like these products and how they work together as part of a daily supplement routine. The Magnesium Glycinate, Vitamin D, and Multivitamin each have their own purpose, which makes the product line feel well thought out. I especially like how convenient everything is and how professional the products look. Overall, I think this is a really amazing website for women’s and men’s health, and I would absolutely be interested in trying more myself.”
Sarah Mitchell
These reviews were left by customers of our previous store for the same product line, and are published unedited. Individual experiences vary. Reviews describe how people found using the products and are not evidence that any product treats or prevents a condition.
Free US shipping
No minimum. The cost is already in the price, so the total you see is the total you pay.
Elemental dose stated
The figure on the front is the part your body absorbs, not the weight of the whole compound.
Named strains and forms
Every ingredient listed with its own dose. No proprietary blends hiding what is in the capsule.