65 Ingredients, None Proven: What Is Actually Inside the Supplements Sold to Women (2026)

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Walk down the supplement aisle, or scroll one of the sales pages aimed at women over forty-five, and you will read the same three words over and over: clinically studied ingredients. We wanted to know what that phrase is actually worth. So we built a database of every ingredient we could find in bladder and menopause supplements marketed to women, graded each one against published research, and recorded what it is genuinely studied for — as opposed to what it is sold for.

That database now covers 65 ingredients. This is what came out of it.

How we did this, and what the grades mean

We catalogued 65 ingredients appearing in supplements marketed to women for bladder and urinary symptoms (36 ingredients), menopause symptoms (28), or both (1). For each one we recorded what it has actually been studied for, an evidence grade, documented drug interactions, documented cautions, and a primary source. 60 of the 65 entries — 92 per cent — link to a primary source: European Medicines Agency herbal monographs, Cochrane reviews, the NIH Office of Dietary Supplements, NCCIH and Memorial Sloan Kettering among them.

Two things need saying plainly before any of the numbers below mean anything.

The grades are ours. They are an editorial judgement about the weight of published human evidence, not an official classification and not a regulatory rating. Somebody else reading the same literature might grade an individual ingredient a step higher or lower. That is why we publish the underlying data rather than just the conclusions.

This analysis is a snapshot. It covers the dataset as it stood on 21 September 2026: version 2.0, 65 ingredients. We keep adding ingredients and verifying sources, so the live dataset may now be larger and the percentages slightly different. The figures below are not edited afterwards to keep them looking tidy; the current data is always on the dataset page.

This is an ingredient audit, not a product audit. We graded ingredients, not finished formulas — and that distinction is the heart of the problem, as we set out in do bladder control supplements actually work. A product can truthfully advertise clinically studied ingredients while the product itself has never been tested.

Finding 1: nothing is proven for the symptom it is sold for

The two columns that matter most to a woman deciding whether to spend money are the simplest ones in the dataset: does this help stress leaks, and does this help hot flushes.

• Stress leaks: 0 of 65 graded yes. 2 unclear. 63 no.
• Hot flushes: 0 of 65 graded yes. 18 unclear. 47 no.

Not a single ingredient in the entire category reaches yes for either symptom. For stress leaks that result is not really surprising once you understand the mechanism — leaking when you cough or laugh is a problem with the pelvic floor and the support around the urethra, and there is no plausible route by which swallowing a capsule tightens a muscle. Pelvic floor muscle training, by contrast, has Cochrane-level evidence behind it.³ If you are not certain which kind of leak you have, our one-minute symptom check sorts that out before you spend anything.

A related pattern: 25 of the 65 entries — 38 per cent — carry a grade that contains the word none for at least one of the uses the ingredient is marketed for. Saw palmetto is graded strong for male prostate symptoms; none for women’s bladder symptoms. Calcium is moderate for bone health with vitamin D; none for hot flushes. The evidence exists. It is simply evidence for something else.

Finding 2: three ways the evidence gets borrowed

Reading the grades side by side, the same manoeuvre shows up again and again. An ingredient has real research behind it — and that research is then quietly applied to a different route, a different sex, or a different condition. Twelve of the 65 ingredients, roughly one in five, are doing at least one of these.

Borrowed from a different route of administration (4 ingredients)

The most striking pattern in the dataset. These ingredients have reasonable evidence when delivered directly to the tissue, and little or none when swallowed — yet they are sold in capsules.

• Hyaluronic acid — moderate intravesically (instilled into the bladder); none orally.
• Lactobacillus crispatus CTV-05 — limited intravaginally; none orally.
• DHEA — moderate vaginally; very limited orally.
• Glucosamine and chondroitin — very limited orally; moderate intravesically.

A trial in which a clinician instils a solution directly into the bladder tells you very little about a capsule that has to survive the stomach first. This is the single most misleading citation pattern in the category.

Borrowed from men (2 ingredients)

Saw palmetto is graded strong for male prostate symptoms; none for women’s bladder symptoms. Stinging nettle root follows the same shape — limited for male prostate symptoms; none for women’s bladder symptoms. Both appear in products marketed to women. Women do not have a prostate, and the urinary symptoms that these herbs were studied for arise from prostate enlargement.

Borrowed from a different condition (6 ingredients)

• Berberine — strong for metabolic outcomes; thin for bladder.
• Hibiscus — moderate for blood pressure; very limited for urinary symptoms.
• Calcium — moderate for bone health with vitamin D; none for hot flushes.
• Chasteberry — moderate for premenstrual syndrome; very limited for hot flushes; none for stress incontinence.
• Green tea extract (EGCG) — limited for weight and cholesterol; none for menopausal symptoms.
• Melatonin — limited for sleep; very limited in menopause.

Berberine is the clearest case. It has genuinely good research behind it — for blood sugar and cholesterol. None of that is evidence about your bladder, but it lets a label carry the phrase backed by research without technically lying. It is also, as we cover in our FemiCore ingredient breakdown, one of the ingredients most likely to interact with something you already take.

Finding 3: the risk side is better documented than the benefit side

This is the result that surprised us most. Documented cautions appear on 56 of the 65 ingredients (86 per cent). Documented interactions with prescription medicines appear on 29 (45 per cent).

Put that next to Finding 1 and the asymmetry is stark: every one of the 29 ingredients with a documented drug interaction also lacks demonstrated benefit for the symptom it is sold for. We should be honest that this follows arithmetically from the first finding — since no ingredient reached yes, every subgroup inherits that. It is not an independent discovery. But it is still the practical situation a shopper is in: the pharmacology that is best established about these ingredients is what they do to your other medicines.

Some of the interactions are serious and specific:

• Black cohosh — tamoxifen, doxorubicin, docetaxel, simvastatin and drugs metabolised by CYP3A4.
• Berberine — metformin and other diabetes medicines, statins, blood thinners, cyclosporine.
• Cranberry extract — warfarin.
• 5-HTP — SSRIs, tricyclic antidepressants, MAOIs, linezolid, St John’s wort.
• Ashwagandha — sedatives, diabetes medicines, blood pressure medicines, immunosuppressants, thyroid medication.

None of these appears as a warning on a typical sales page. The phrase natural, little to no side effects is common in this category and, on the evidence in our own dataset, it is not defensible.

What this does not mean

A study that fails to find an effect is not the same as proof that there is no effect, and we are not claiming otherwise. Several of these ingredients have simply never been properly trialled for the use in question — the honest description is an evidence gap, not a disproof. Eighteen ingredients graded unclear for hot flushes are exactly that: open questions.

Nor does none proven mean nobody feels better. Symptoms fluctuate, placebo effects in symptom-report conditions are substantial, and people who start a supplement often change other things at the same time. What the dataset says is narrower and firmer: if you are deciding whether to spend money, there is currently no ingredient in this category with clear published evidence that it will fix the symptom that made you go looking.

What to do with this if you are shopping

1. Ask what the ingredient was studied for, not whether it was studied. The answer is frequently a different route, a different sex or a different condition.
2. Check the dose is printed. If it is not, you cannot compare it with the trial dose, and neither can your pharmacist.
3. Take the label to a pharmacist if you take anything regularly. With 45 per cent of these ingredients carrying documented interactions, this is a five-minute free check that is genuinely worth doing.
4. Weigh the guarantee more heavily than the ingredient list. When nothing in the category is proven, the refund terms are the only part of the offer that reliably protects you.
5. Spend the effort on what does have evidence. Bladder training for urgency, and pelvic floor muscle training for stress leaks³ — both are first-line in the NICE guideline.⁴ If you have tried Kegels without result, there are usually specific reasons why.

Use this data yourself

The complete dataset is published under a Creative Commons Attribution 4.0 licence. Researchers, clinicians and journalists are welcome to reuse it, and we would rather you checked our working than took our word for it.

• Browse it: the 65-ingredient evidence database
• CSV: bladder-supplement-ingredients.csv
• JSON API: /wp-json/herwellreport/v1/ingredients
• Licence and how to cite: our press and data page

Suggested citation: HerWellReport supplement ingredient dataset v2.0, CC BY 4.0 — https://herwellreport.com/press/

Bottom line

Sixty-five ingredients, graded one by one against the published research. Not one of them has clear evidence for the symptom it is sold for. Nearly half interact with prescription medicines. The best-documented pharmacology in the category is not what these ingredients do for your bladder or your hot flushes — it is what they do to the medicines you already take. If you buy something in this category anyway, buy it with your eyes open, buy the smallest pack, and treat the refund window as the real product.

Frequently asked questions

How many supplement ingredients did you grade?

65 ingredients used in bladder and menopause supplements marketed to women: 36 bladder, 28 menopause and 1 appearing in both categories. 60 of the 65 entries link to a primary source such as a Cochrane review, an EMA herbal monograph or an NIH resource.

Did any ingredient have good evidence for stress leaks?

No. On our grading, 0 of 65 reached yes, 2 were unclear and 63 were graded no. Stress leaks are a pelvic floor problem, and pelvic floor muscle training is the intervention with Cochrane-level evidence behind it.³

How many of these ingredients interact with prescription medicines?

29 of 65, or 45 per cent, carry a documented interaction in our dataset — including with warfarin, statins, tamoxifen, SSRIs, thyroid medication and diabetes drugs. A further breakdown sits on each ingredient page.

Can I reuse your dataset?

Yes. It is published under CC BY 4.0 as CSV and as a JSON API, and you are free to reuse or republish it with attribution. Details are on our press and data page. We do not sell or exchange links, and we do not accept payment to publish anything.

Does none proven mean these supplements definitely do not work?

No. It means that on our reading of the published human research, no ingredient in this category has clear evidence for the symptom it is marketed for. For several ingredients the honest description is an evidence gap rather than a disproof — nobody has run the trial.

This article reports our own editorial grading of published research. It is information, not medical advice, and it does not replace a conversation with your own doctor or pharmacist, who can see your full medication list.

More from HerWellReport

• The ingredient evidence database
• Do bladder control supplements actually work?
• Best menopause supplements: what is actually in them
• Bladder training: the six-week method with real evidence
• FemiCore review: ingredients, price and guarantee