NOW Foods Soy Isoflavones are a plant-based option that supports hormonal balance and antioxidant protection, thanks to genistein, daidzein, and glycitein from non-GMO soy. The main active ingredients are genistein, daidzein and glycitein, phytoestrogens with antioxidant action that support balanced estrogenic activity. NOW Foods has been family owned since 1968 and makes in GMP certified facilities, underscoring quality and trust.

Available Sizes & Variants:

120 capsules – (vegetarian) capsules for easy daily dosing.

Benefits & Features:

• Supports hormonal balance with phytoestrogen (action).
• Contains genistein, daidzein and glycitein from non-GMO soy (for) antioxidant protection.
• Proprietary extraction yields (greater) genistein concentrations than standard soy isoflavone products.
• (Made) in GMP-certified facilities with non-GMO verification (to ensure) quality and purity.
• (Vegetarian friendly) formulation uses rice flour, cellulose and silica to create a clean, easy-to-digest capsule that fits comfortably into most daily routines, from morning to night.

NOW Foods has built a solid reputation since 1968, with family ownership and GMP manufacturing that shoppers rely on. The soy isoflavone blend includes genistein, daidzein and glycitein, the (key) isoflavones, and the proprietary extraction concentrates the genistein for added potency. This brand’s consumers value openness; rice flour, cellulose and silica keep the capsule clean and vegan. It sits well alongside (plant based) protein powder and vitamin d supplement routines, reflecting NOW Foods’ commitment to accessible, quality nutrition.

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take 1 capsule 1 to 3 times daily, preferably with food. Store in a cool, dry place after opening. For adults only. Consult a physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: Isoflavones (Genistein, Daidzein, Glycitein)

Isoflavones are plant-based compounds that act as phytoestrogens and have antioxidant activity, helping with normal cellular protection processes. This formula sources non-GMO soy isoflavones, mainly Genistein, Daidzein, and Glycitein, from Glycine max extract to give a broad isoflavone profile. The ingredient is supplied in a vegetarian format and produced in GMP-certified facilities to bolster quality and sustainability.

This formula also includes soy-derived isoflavones from non-GMO soy, which helps to support the role of these compounds in hormonal balance and antioxidant function; the main focus is on the isoflavone components Genistein, Daidzein, and Glycitein.

What Do Isoflavones Do?

Isoflavones are involved in everyday physiological processes as phytoestrogens with mild estrogenic activity and are recognised for their antioxidant potential. They can support hormonal balance related to reproductive health cycles, in line with EFSA guidance and NHS information on phytoestrogens and antioxidant action.

EFSA guidance supports the idea that these compounds can interact with estrogen receptors and contribute to cellular protection through antioxidant mechanisms, which aligns with the role of isoflavones in this product.

*This product is not intended to diagnose, treat, cure, or prevent any disease.

NOW Foods stands out for its long-standing heritage and hands-on manufacturing expertise, with the family-owned legacy dating back to 1968 and a commitment to quality that permeates its GMP-certified facilities. This founder-led stewardship guides rigorous quality and sourcing standards across the brand, which helps explain why NOW Foods is our trusted partner for Soy Isoflavones.

This brand delivers a clear product-specific capability: non-GMO soy isoflavones with a proprietary extraction process that yields notable genistein concentrations, paired with vegetarian/vegan capsules and transparent ingredient panels. Their non-GMO verification and plant-based formulation align with Welzo’s emphasis on purity and traceability, and their established manufacturing framework supports consistent quality across batches. Our team evaluates the brand through the lens of supplier credibility and manufacturing reliability, supported by our exclusive checks on ingredient quality how we verify ingredient quality and insights from our medical team our medical team.

Together, this blend of heritage, robust quality standards, and product-specific capabilities makes NOW Foods the ideal fit for this Soy Isoflavones supplement, reinforcing our trust in their ability to meet Welzo’s stringent standards.