{"ok":true,"entry":{"slug":"white-kidney-bean-extract","kind":"supplement","name":"white kidney bean extract","aliases":["Phaseolus vulgaris","carb blocker","phaseolamin"],"brands_sg":["NOW Foods","Nutricost","Futurebiotics","Source Naturals","Swanson Vitamins"],"class":"botanical","tags":["general"],"use_for":"sold as a starch blocker · trial results are inconsistent","use_after":"trials dosed it before carbohydrate-rich meals","use_duration":null,"take_with":null,"pros":["a 2011 review of 6 trials saw body fat fall 1.86 kg","few safety concerns up to 3,000 mg/day for 12 weeks","reported adverse effects in trials were minor"],"cons":["that same review rated the trial quality poor","no significant effect on weight in that review","no trial has run longer than 13 weeks"],"dose_note":"trials of phaseolus vulgaris extract ran 4–13 weeks at 445 to 1,500 mg a day in the 2011 review, and a later 12-week trial used 1,000 mg three times a day before meals for a total of 3,000 mg a day; ods reports few safety concerns for up to 3,000 mg a day for as long as 12 weeks, and the 2011 review found body fat fell 1.86 kg more than placebo while body weight did not change significantly; no rda, ul, fda daily value or hsa singapore daily limit exists for this ingredient","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":["trials ran 4–13 weeks — longer-term safety has not been studied","reported effects: headaches, soft stools, flatulence, constipation","the pooled evidence rests on trials the reviewers rated poor quality","not listed in hsa annex a or b — that is not a safety finding"],"clashes":[],"sources":[{"id":"ods_wl_wkb_mech","url":"https://web.archive.org/web/20260826105104/https://ods.od.nih.gov/factsheets/WeightLoss-HealthProfessional/","label":"NIH ODS — Dietary Supplements for Weight Loss (Health Professional), updated 18 May 2022; read via the archive.org capture of 26 Aug 2026 because ods.od.nih.gov returns HTTP 403 to direct fetches — White Kidney Bean/Bean Pod (Phaseolus vulgaris), mechanism","quote":"Phaseolus vulgaris extract is an ingredient in some weight-loss dietary supplements marketed as carbohydrate- or starch-absorption blockers … inhibits alpha-amylase activity, so experts have hypothesized that the plant interferes with the breakdown and absorption of carbohydrates","accessed":"2026-08-27"},{"id":"ods_wl_wkb_table","url":"https://web.archive.org/web/20260826105104/https://ods.od.nih.gov/factsheets/WeightLoss-HealthProfessional/","label":"NIH ODS — Dietary Supplements for Weight Loss (Health Professional), updated 18 May 2022; read via the archive.org capture of 26 Aug 2026 because ods.od.nih.gov returns HTTP 403 to direct fetches — Table 1 summary row for white kidney bean","quote":"White kidney bean (Phaseolus vulgaris) … Research findings: Possible modest effect on body weight and body fat … Few safety concerns reported for up to 3,000 mg/day for as long as 12 weeks","accessed":"2026-08-27"},{"id":"ods_wl_wkb_review","url":"https://web.archive.org/web/20260826105104/https://ods.od.nih.gov/factsheets/WeightLoss-HealthProfessional/","label":"NIH ODS — Dietary Supplements for Weight Loss (Health Professional), updated 18 May 2022; read via the archive.org capture of 26 Aug 2026 because ods.od.nih.gov returns HTTP 403 to direct fetches — 2011 review of six trials","quote":"The authors of a 2011 review of six trials … concluded that 445 to 1,500 mg/day Phaseolus vulgaris for 4–13 weeks significantly reduced body fat (mean difference 1.86 kg compared to placebo) but did not significantly affect weight loss","accessed":"2026-08-27"},{"id":"ods_wl_wkb_quality","url":"https://web.archive.org/web/20260826105104/https://ods.od.nih.gov/factsheets/WeightLoss-HealthProfessional/","label":"NIH ODS — Dietary Supplements for Weight Loss (Health Professional), updated 18 May 2022; read via the archive.org capture of 26 Aug 2026 because ods.od.nih.gov returns HTTP 403 to direct fetches — trial quality and trial duration","quote":"the authors noted that the quality of the trials included in their review was poor, making it impossible to draw firm conclusions … no trials have lasted longer than 13 weeks","accessed":"2026-08-27"},{"id":"ods_wl_wkb_ae","url":"https://web.archive.org/web/20260826105104/https://ods.od.nih.gov/factsheets/WeightLoss-HealthProfessional/","label":"NIH ODS — Dietary Supplements for Weight Loss (Health Professional), updated 18 May 2022; read via the archive.org capture of 26 Aug 2026 because ods.od.nih.gov returns HTTP 403 to direct fetches — reported adverse effects","quote":"Reported adverse effects for Phaseolus vulgaris are minor and include headaches, soft stools, flatulence, and constipation … No serious adverse effects of Phaseolus vulgaris have been reported in clinical trials","accessed":"2026-08-27"},{"id":"ods_wl_wkb_timing","url":"https://web.archive.org/web/20260826105104/https://ods.od.nih.gov/factsheets/WeightLoss-HealthProfessional/","label":"NIH ODS — Dietary Supplements for Weight Loss (Health Professional), updated 18 May 2022; read via the archive.org capture of 26 Aug 2026 because ods.od.nih.gov returns HTTP 403 to direct fetches — how the trials dosed it","quote":"took a tablet containing approximately 445 mg dried aqueous extract of Phaseolus vulgaris … once daily before eating a carbohydrate-rich meal … 1,000 mg Phaseolus vulgaris … three times per day before meals","accessed":"2026-08-27"},{"id":"hsa_prohibited","url":"https://file.go.gov.sg/hsa-chp-prohibited-restricted-ing-guidelines.pdf","label":"HSA Singapore — Guidelines on Prohibited and Restricted Ingredients in Health Supplements and Traditional Medicines, GL-CHPB-1-012 Rev. No. 001 (October 2025) — Annex A (118 rows) and Annex B (4 rows): Phaseolus vulgaris / white kidney bean is NOT LISTED in either; Annex A runs 77. Papaver spp. then 78. Phosphorus, with no Phaseolus between them","quote":"The objective of this guideline is to highlight the substances of concern when used in HS and TM and is not meant to be an exhaustive list.","accessed":"2026-08-27"},{"id":"hsa_hs_guidelines","url":"https://file.go.gov.sg/hsa-hs-guidelines.pdf","label":"HSA Singapore — Health Supplements Guidelines GL-CHPB-3-001 (January 2026), clause 4.8 with Tables 4–5, which list vitamins and minerals only — no botanical or fibre rows","quote":"4.8 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"},{"id":"iherb_sg","url":"https://sg.iherb.com/c/white-kidney-bean-extract","label":"iHerb Singapore — White Kidney Bean Extract category page, default listing order, 27 Aug 2026","quote":"1 - 13 of 13 results: NOW Foods, Phase 2 Starch Neutralizer; Nutricost, White Kidney Bean; Futurebiotics, White Kidney Bean Extract; Source Naturals, Phase 2 Carbohydrate Blocker; Swanson Vitamins, White Kidney Bean Extract","accessed":"2026-08-27"}],"brand_certs":null,"updated_at":"2026-08-29T16:16:34.039038+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."}