{"ok":true,"entry":{"slug":"ecdysterone","kind":"supplement","name":"ecdysterone","aliases":["beta-ecdysterone","20-hydroxyecdysone"],"brands_sg":[],"class":"phytosteroid","tags":["fitness"],"use_for":"a 12-week trial found no gain over training alone","use_after":null,"use_duration":null,"take_with":null,"pros":["single 175 mg and 350 mg doses were well tolerated","occurs in food — spinach and quinoa carry it"],"cons":["one tested product held <1% of its claimed content","on WADA's monitoring programme since 2020","supplements may carry undeclared banned substances"],"dose_note":"a 12-week randomised double-blind trial dosed a commercial phytosteroid product three times a day as its label recommended; analysis of that batch found less than 1% of the claimed 20-hydroxyecdysone present, so the dose actually delivered is unknown","dosage":{"ul":null,"unit":"mg","fda_dv":null,"rda_ai":null,"ul_status":"none_established","population":"general adult","hsa_max_daily":null},"ul_status":"none_established","sg_class":null,"cautions":["drug-tested athletes — WADA monitors 20-hydroxyecdysone","label content may not match what is in the capsule"],"clashes":[],"sources":[{"id":"dissemond2025","url":"https://europepmc.org/article/PMC/PMC12337734","label":"How reliable is the labeling of a commercial phytosteroid product? A 12-week randomized double-blind training study (Dissemond et al., JISSN 2025)","quote":"less than 1% of the claimed 20E concentration and 10.4% of the claimed DSG concentration were present in the capsules … The lack of group-specific differences suggests that the tested phytosteroid supplement did not provide additional benefits","accessed":"2026-08-27"},{"id":"hsa_pr","url":"https://file.go.gov.sg/hsa-chp-prohibited-restricted-ing-guidelines.pdf","label":"HSA — Guidelines on Prohibited and Restricted Ingredients in Health Supplements and Traditional Medicines (Oct 2025), Annex A","quote":"A list of specific prohibited and restricted ingredients is provided in Annex A … This list is not exhaustive. Dealers are responsible to ensure that their products are safe and appropriate for the target consumers.","accessed":"2026-08-27"},{"id":"hsa_hs","url":"https://file.go.gov.sg/hsa-hs-guidelines.pdf","label":"HSA — Health Supplements Guidelines (Jan 2026), Tables 4–5","quote":"HS for use by the general adult population should not contain vitamins and minerals exceeding the stipulated limits stated in Tables 4 and 5.","accessed":"2026-08-27"}],"brand_certs":null,"updated_at":"2026-08-29T16:16:18.585742+08:00"},"disclaimer":"kozen-x is not a medical device and does not give medical advice. it lists what published sources have written down. absence of a record is not the same as safe."}