Ingredient · Botanical
Soy Isoflavones
Also known as Glycine max.
- Forms graded
- 4
- Dose zones
- 5
- Updated
- 1 Sept 2026
Every Soy Isoflavones form, graded
4 forms scored on published absorption evidence. This is the comparison no supplement brand will publish about its own products.
- ×1.5Superior absorptionNone graded here
- ×1.25Well absorbedSoy Isoflavones (extract), Soy Isoflavones (standardised)
- ×1Reference formSoya Isoflavones, Soy Isoflavones (non-standardised)
- ×0.85Poor absorptionNone graded here
- Soy Isoflavones (extract)Multiplier×1.25
- Soy Isoflavones (standardised)Multiplier×1.25
- Soya IsoflavonesMultiplier×1
- Soy Isoflavones (non-standardised)Multiplier×1
Multipliers are applied to each ingredient's dose score when a product is graded. How multipliers are assigned.
How much Soy Isoflavones should you take?
SuppScore grades doses across evidence zones rather than against a single recommended figure. Scored information, not a recommendation.
- Zone 10 to 10 mg per dayLow dose
- Zone 210 to 30 mg per dayGeneral maintenance dose
- Zone 330 to 40 mg per dayFor deficiency or elevated need
- Zone 540 to 80 mg per dayPractitioner-grade dose
- Zone 580 to 120 mg per dayPractitioner-grade dose
Zones describe what the evidence supports at a dose. They are not advice on what to take, and they do not replace a conversation with a doctor or pharmacist.
What is Soy Isoflavones good for?
Products containing Soy Isoflavones
Scored products that list it on the label, highest scoring first. Ordering is by SuppScore only. We have no commercial relationship with any brand shown.

MPowder
PERI-BOOST
SuppScore 52
Bettervits
Menopause Complex
SuppScore 49
Inspiriko
18-in-1 Perimenopause Supplements, Phytoestrogens, 60 Capsules
SuppScore 48
Horbäach
Perimenopause Supplement for Women
SuppScore 30
Menopace
Menopace Max
SuppScore 28
Menopace
Menopace Plus
SuppScore 27
Natures Aid
Menopause Support Formula
SuppScore 26
Vitabiotics
Menopace Plus
SuppScore 25
Starpowa
Meno Balance 60 Gummies
SuppScore 17References
Reviewed by the SuppScore advisory board
Every score on this page is computed from the SuppScore ingredient database using our published scoring rules. Our advisory board maintains those rules and the ingredient data behind them, and takes no payment from the brands whose products are scored.
Meet the advisory board · Last reviewed 1 Sept 2026
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