{"ok":true,"entry":{"slug":"rose-hips","kind":"supplement","name":"rose hips","aliases":["Rosa canina"],"brands_sg":["California Gold Nutrition","Solaray","Swanson","Vitacost","21st Century"],"class":"botanical","tags":["immune","bone-joint"],"use_for":"joint pain in osteoarthritis trials — results are mixed","use_after":null,"use_duration":"the danish trial ran 12 weeks on a tapering amount","take_with":null,"pros":["vitamin c is its highest vitamin, with a, b and e too","2019 review: placebo-controlled rcts, well tolerated","only the active group showed a dose-per-kg gradient"],"cons":["2026 re-analysis: no group difference in womac scores","placebo improved over 50% in that same trial","the 2019 review is mechanistic, not a pooled effect"],"dose_note":"the danish osteoarthritis trial (n=120) gave 5 g a day of standardised rosa canina powder in 0.5 g capsules for three weeks, then 2.5 g a day for nine more weeks; singapore listings are mostly vitamin c tablets of 500 mg to 1,000 mg with rose hip added","dosage":{"ul":null,"unit":"g","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":["sg rose hip products are usually vitamin c combinations, and hsa caps vitamin c at 1,000 mg a day","the trials used one standardised powder, not rose hip generally","singapore does not allow arthritis or joint-inflammation claims"],"clashes":[],"sources":[{"id":"gruenwald2019","url":"https://europepmc.org/article/MED/31138475","label":"Rosa canina — Rose hip pharmacological ingredients and molecular mechanics counteracting osteoarthritis: a systematic review (Gruenwald et al., Phytomedicine 2019)","quote":"Several randomized placebo controlled double-blind studies, as mono or combination therapy, have demonstrated treatment efficacy as well as excellent tolerability. … This review focuses on the molecular mechanism underlying the clinical effects of rose hip in osteoarthritis","accessed":"2026-08-27"},{"id":"motawei2026","url":"https://europepmc.org/article/PMC/PMC12845314","label":"Using Dose-Response Correlation Re-Analyzing to Distinguish Placebo from Standardized Rose-Hip Powder (Lito) in a Clinical Trial on Osteoarthritis (Motawei, Warholm & Winther, Nutrients 2026; re-analysis of NCT01459939, N=120)","quote":"Both groups showed significant improvement, over 50%, with no statistically significant differences between them in WOMAC pain or function. However, only the active group … exhibited a consistent negative correlation between body weight and symptom improvement","accessed":"2026-08-27"},{"id":"nicolescu2024","url":"https://europepmc.org/article/PMC/PMC11043540","label":"Unveiling the mechanisms for the development of rosehip-based dermatological products: an updated review (Front Pharmacol 2024)","quote":"Rosehip is a storehouse of vitamins, including A, B complex, C, and E. Among phytonutrients, vitamin C is found in the highest amount.","accessed":"2026-08-27"},{"id":"hsa_vitc_limit","url":"https://file.go.gov.sg/hsa-hs-guidelines.pdf","label":"HSA — Health Supplements Guidelines, Rev. No. 020 (January 2026), Table 4: Vitamins Limits","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. … Vitamin C — 1000mg","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, Version 1 (Oct 2025), Annex A (72 rows) and Annex B (4 rows: caffeine, green tea extract, St John's wort, L-tryptophan) — 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_table6","url":"https://file.go.gov.sg/hsa-hs-guidelines.pdf","label":"HSA — Health Supplements Guidelines, Rev. No. 020 (January 2026), Table 6: diseases/conditions not allowed for health supplements","quote":"HS must not be labelled, advertised or promoted for any specific medicinal purpose, i.e. treatment or prevention, implied or otherwise, of any disease or disorder, including its related conditions.","accessed":"2026-08-27"},{"id":"iherb_sg","url":"https://sg.iherb.com/c/rose-hips","label":"iHerb Singapore — Rose Hips category (default order, 1 - 32 of 32 results)","quote":"California Gold Nutrition, Total C Complex with Ascorbic Acid, Amla Extract, Citrus Bioflavonoids & Rose Hip Extract, 500 mg … Solaray, Timed Release Vitamin C with Rose Hip & Acerola, 1,000 mg … Swanson Vitamins, C-1000, Vitamin C With Rose Hips … Vitacost, Everyday, Vitamin C, 1,000 mg … 21st Century, Vitamin C with Rose Hips","accessed":"2026-08-27"}],"brand_certs":null,"updated_at":"2026-08-29T16:16:29.426925+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."}