- Lamberts Soya Isoflavones are one of the most potent products available in the UK. - Soya isoflavones have now become a popular supplement for women approaching or going through the menopause. - Each tablet provides a full 50mg of pure isoflavones. - This product is made in the UK to pharmaceutical GMP standards. There is a growing body of evidence in the scientific literature that eastern diets may provide significantly more protective plant nutrients than western diets and isoflavones have been identified as one of these nutrients. Soya isoflavones have now become a popular and convenient supplement for women approaching or going through the menopause. However, the level of isoflavones present in supplements can be confusing as some companies label soya extract as being all \'isoflavones\'. This is never the case as the isoflavones are only ever present in the soya extract, at anything between 10% to 30%.