Our Research Standards

Who We Are

Vitamins Women Guide was created with one purpose: to give women over 50 honest, research-backed supplement guidance they can actually trust.

We know how overwhelming the supplement world can be — thousands of products, conflicting claims, and marketing that preys on your concerns. That’s why every guide we publish follows a strict research process, rooted in peer-reviewed science and written specifically for the needs of women in midlife and beyond.

Our guides are written and reviewed by the Vitamins Women Guide editorial team. We are researchers and writers — not doctors — and we think saying that plainly matters. It’s precisely why we don’t ask you to trust our clinical judgement. We show you the evidence instead, sourced and linked, so you can check it yourself or take it to your own physician.

You can read more about who we are and why this site exists on our About Us page.

Our Four Research Pillars

Every article and product recommendation we publish is built on four non-negotiable pillars:

What This Looks Like in Practice

Standards are easy to write and harder to keep. So rather than ask you to take our word for it, here are real examples from guides published on this site — each one a case where honesty cost us something.

How We Evaluate Every Supplement

Before any product earns a spot in our guides, it must pass a rigorous evaluation. Here’s exactly what we look at:

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  Ingredient form & bioavailability — We assess whether the ingredient is in its most absorbable form (magnesium glycinate over oxide, ubiquinol over ubiquinone, hydrolyzed collagen over whole). The wrong form can make a supplement nearly useless.
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  Human clinical evidence — We verify that active ingredients are backed by real human trials. Animal studies and laboratory research are never presented as human proof, and we say so explicitly when that’s all that exists.
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  Dose that matches the research — A product containing the right ingredient at a fraction of the studied dose isn’t replicating anything. We check the numbers and tell you when they don’t add up.
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  Third-party testing & certifications — We prioritize products independently verified by USP, NSF or Informed Sport for purity, potency and label accuracy.
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  Label transparency — We reject products that hide doses inside proprietary blends. If you can’t see what’s in it, you can’t evaluate it.
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  Safety & interactions — We flag interactions with medications and conditions common in women over 50: thyroid medication, blood thinners, hormone therapy, statins, diabetes and blood pressure drugs. These appear prominently, not buried at the bottom.
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  Real value — We compare cost per gram or per dose, not price per bottle, so you can see which product is genuinely better value rather than which looks cheaper on the shelf.
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  Real-world feedback — We review verified customer reports to identify patterns in tolerability and side effects that clinical trials sometimes miss.

How We Handle Expert Opinion

You’ll notice something unusual about our guides: we rarely quote doctors.

That’s deliberate. A great deal of supplement content borrows credibility by attributing statements to well-known physicians — statements that, when you go looking, frequently turn out to be paraphrased, taken out of context, or simply invented.

We hold ourselves to a strict rule: we only publish a quote if we can identify exactly where and when the person said it. Not “Dr. So-and-so believes” — an actual traceable statement from a named interview, book, paper or podcast.

In practice, that means we’ve removed doctor quotes from several of our own guides after being unable to verify them. A guide with no expert quote is better than a guide with a fabricated one — and we’d rather earn your trust slowly than borrow it dishonestly.

When we can’t verify a quote, we do something better anyway: we cite the study directly, so you can read the primary source yourself rather than take anyone’s word for it.

Where Our Research Comes From

We draw from credible, peer-reviewed scientific sources, including:

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  PubMed / NCBI — The U.S. National Library of Medicine’s database of over 35 million biomedical citations and full-text articles.
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  Cochrane Library — Systematic reviews and meta-analyses considered the gold standard in evidence-based medicine.
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  NIH Office of Dietary Supplements — The U.S. government’s authoritative resource on supplement safety and efficacy.
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  Examine.com — An independent, non-commercial database of supplement and nutrition research summaries.
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  Peer-reviewed journals directly — including Nutrients, the American Journal of Medicine, Skin Pharmacology and Physiology, and others, cited individually in each guide.

We never cite marketing materials, brand websites, or unverified health blogs as scientific sources. Every guide ends with a section listing exactly what we used, with links.

When We Get It Wrong

Science changes, and so do we. Several guides on this site have been substantially rewritten because newer or better-designed research contradicted what we’d originally published.

If you spot an error — a misquoted study, a broken link, a product that’s changed formulation — please tell us. We’ve corrected guides before and we’ll do it again. That isn’t a flaw in the process; it is the process.