Ingredient notes
Does Ginkgo Biloba Work? A Plain Read of the Research
Does ginkgo biloba work? NIH's NCCIH says no conclusive evidence shows it helps any health condition. In the GEM study of more than 3,000 people aged 75 or older, ginkgo did not reduce dementia rates compared with placebo. The Protoflow label lists ginkgo leaf at 120 mg per 2 capsules, and no study tested that capsule.
Written by the Protoflow label deskUpdated · 4 min read

Does ginkgo biloba work for memory or circulation?
The best-run test says no for dementia, and NIH says no conclusive evidence supports any condition (NCCIH, Ginkgo).
Ginkgo has a long record as a memory and circulation herb. A long record is not a result.
The GEM study followed more than 3,000 people aged 75 or older. Ginkgo did not lower dementia rates compared with placebo (NCCIH, Ginkgo).
What claims go with ginkgo, and how do they hold up?
Most claims are about thinking or blood flow. None has conclusive support in the NIH summary.
| Claim | What was found |
|---|---|
| Prevents dementia | No reduction in a 3,000-person trial |
| Helps any health condition | No conclusive evidence |
| Helps the prostate | Not studied in the sources we read |
| Is well tolerated | Leaf extract generally yes |
What does the Protoflow label do with ginkgo?
It lists ginkgo leaf at 120 mg per 2 capsules in the circulation group, and names no health claim for it.
The GEM trial was not a prostate study, and the label does not say what ginkgo is for. That puts the line in the same spot as many others: present, printed, and untested at that dose in this formula.
Ginkgo adds a cost and an interaction flag. NIH finds no conclusive gain to offset them.
The flag is covered in ginkgo biloba bleeding risk.

Protoflow: from $49 a bottle60 capsules · 2, 3 or 6 bottles · free US shipping on 3 or 6 · 60-day guarantee
See packsWhen is a doctor visit better than a ginkgo capsule?
Whenever memory slips or urinary symptoms change. Both have causes a clinician can look for.
Waking at night to urinate can come from an enlarged prostate, but also diabetes, sleep apnea or medicines (MedlinePlus, Nocturia). No capsule sorts that out. Keep taking prescribed medicine, and weigh the label's claims against the benefits page.
FAQ01
Protoflow questions people ask
What was the GEM study of ginkgo?
A trial of more than 3,000 people aged 75 or older, in which ginkgo did not reduce dementia rates compared with placebo.
Is ginkgo biloba good for the prostate?
None of the sources we checked tested it for the prostate. NIH finds no conclusive evidence for any condition.
Why is ginkgo still so popular?
A long history of use and steady marketing. Neither is the same as a trial result.
Does a higher ginkgo dose work better?
No source we read shows that. The NIH summary finds no conclusive evidence at any dose.
Are there good reasons to take ginkgo anyway?
Some people try it out of curiosity. If you do, tell your pharmacist first, because of its bleeding warning with blood thinners.
Who wrote this02
Written and reviewed by
Pages built from the label, the brand pages and linked NIH, FDA, FTC, NICE and peer-reviewed sources.
Last updated . See our editorial standards and how we check reviews. This website is run by a USA authorized Protoflow retailer, not by the manufacturer or distributor, PhytoThrive Labs. We make money when you buy through our order links.
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