The price (€22.9) is primarily due to the patented KSM-66 extract form, which has been used in numerous clinical studies and features a specific water-based ('green chemistry') extraction process with a 12:1 ratio (Winther, 2026). In addition, the product contains 600 mg of extract per capsule, which amounts to 1200 mg daily at the recommended 2 capsules - considerably more than some other products in our range, which contain 200-400 mg per capsule. The higher price thus reflects both the extract's brand and the higher dose per package.

The manufacturer explicitly warns on the label that people with thyroid conditions should consult a doctor before use, as ashwagandha can in rare cases affect thyroid function (e.g. weight loss, increased heart rate, sweating) (Winther, 2026). This is particularly important in hyperthyroidism (overactive thyroid), while the picture is less clear-cut in hypothyroidism. This is not an automatic contraindication, but given your condition, we recommend consulting a doctor who is familiar with your diagnosis and current therapy before use.

Unfortunately, the label does not state the exact percentage of withanolides, only the total amount of extract (600 mg per capsule) and the KSM-66 brand name, which according to the manufacturer's specification is standardized to at least 5% withanolides (Vittal and Vinciguerra, 2025). This means we can derive an approximate estimate of the withanolide range indirectly, but the exact content cannot be confirmed without additional data from the manufacturer or an independent test. For full transparency, we would like the manufacturer to state this figure explicitly on the label.

No, or not without prior consultation - the manufacturer explicitly states on the label that people being treated with corticosteroids should consult a doctor before use. Since ashwagandha, according to some data, affects the hypothalamic-pituitary-adrenal axis and serum cortisol (Della Porta et al., 2023), there is a theoretical possibility of interaction with corticosteroid therapy. This is not a substitute for medical advice - discuss concurrent use with the doctor who prescribed your therapy.