{"ok":true,"entry":{"slug":"blackcurrant","kind":"supplement","name":"blackcurrant","aliases":["Ribes nigrum","cassis anthocyanins"],"brands_sg":[],"class":"botanical","tags":["general"],"use_for":"a small pooled effect on sport performance in 9 trials","use_after":"the pooled trials dosed anthocyanins before exercise","use_duration":null,"take_with":null,"pros":["9 pooled trials, sport performance smd 0.45, p = 0.01","the effective range was 105-210 mg anthocyanins","the review reported no known detrimental side effects"],"cons":["blood pressure did not move in four pooled trials","too few studies to say how the effect works","sport data are new zealand blackcurrant only"],"dose_note":"the 2020 systematic review and meta-analysis puts the effective dose between 105 and 210 mg of total blackcurrant anthocyanins taken prior to exercise, pooled from nine placebo-controlled trials out of sixteen reviewed; a separate 2023 meta-analysis of four trials found no blood-pressure change; no singapore retail listing was available to anchor a capsule strength","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":["the review found too few reports to characterise side effects","the evidence is athletic performance in active adults, not general use","the sport trials all used new zealand-derived blackcurrant","not listed in hsa annex a or b — absence of a listing is not a safety finding"],"clashes":[],"sources":[{"id":"braakhuis2020","url":"https://europepmc.org/article/PMC/PMC7251677","label":"The effect of New Zealand blackcurrant on sport performance and related biomarkers: a systematic review and meta-analysis (Braakhuis, Somerville & Hurst, JISSN 2020)","quote":"There was an improvement in sport performance when supplementing with blackcurrant, 0.45 (95% CI 0.09-0.81, p = 0.01). The effective dose appears to be between 105 and 210 mg of total blackcurrant anthocyanins, prior to exercise.","accessed":"2026-08-27"},{"id":"braakhuis2020_limits","url":"https://europepmc.org/article/PMC/PMC7251677","label":"The effect of New Zealand blackcurrant on sport performance and related biomarkers (Braakhuis et al., JISSN 2020) — limitations and conclusion","quote":"There were insufficient studies reporting oxidative markers, cognitive effects or biomarkers, and/or side effects to comment on the mechanism of action … a small, but significant, effect on sport performance, with no known detrimental side effects.","accessed":"2026-08-27"},{"id":"nikparast2023","url":"https://europepmc.org/article/PMC/PMC9900079","label":"The Effects of Blackcurrant and Raspberry Consumption on Blood Pressure: A Systematic Review and Meta-Analysis of Randomized Controlled Trials (Nikparast et al., Clin Nutr Res 2023)","quote":"pooled analysis of four clinical trials indicated that blackcurrant consumption did not reduce SBP (WMD, -1.46; 95% CI, -6.62 to 3.7; p = 0.579), and DBP (WMD, -2.09; 95% CI, -4.38 to 0.20; p = 0.07)","accessed":"2026-08-27"},{"id":"hsa_annex","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, GL-CHPB-1-012 Rev. No. 001 (Oct 2025), Annex A and Annex B — read from the cached PDF text on disk","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_tables","url":"https://file.go.gov.sg/hsa-hs-guidelines.pdf","label":"HSA — Health Supplements Guidelines, GL-CHPB-3-001 Rev. No. 020 (January 2026), Tables 4 and 5 (vitamins and minerals limits) — read from the cached PDF text on disk","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"},{"id":"iherb_sg","url":"https://sg.iherb.com/c/herbs","label":"iHerb Singapore — Herbs category index, checked for a blackcurrant / cassis / Ribes sub-category (none exists; /c/black-currant, /c/blackcurrant, /c/black-currant-oil, /c/black-currant-extract and /c/currant all return 404)","quote":"Bacopa … Bilberry … Black Cohosh … Black Seed … Black Walnut Supplements … Blueberry Supplement … Boswellia … Burdock Root","accessed":"2026-08-27"}],"brand_certs":null,"updated_at":"2026-08-29T16:16:12.75901+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."}