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Parsley

Supplement botanical general nutrition
Aka: Petroselinum crispum
Brands seen in Singapore: Micro Ingredients, Swanson Vitamins, Nature's Way, Nature's Truth, Solaray
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
Traditional diuretic and stomach tonic — data preclinical
Pros & cons
Pros
  • Long traditional use as a diuretic and stomach tonic
  • Animal and cell studies report antioxidant effects
  • Limited human studies: modest urinary changes
Cons
  • Reviewers report a big lack in clinical evidence
  • High-dose safety requires further investigation
  • SG bars kidney and urinary-tract claims (table 6)
Sources
  1. Petroselinum crispum (Mill.) Fuss (Parsley): An Updated Review of the Traditional Uses, Phytochemistry, and Pharmacology (Bahramsoltani R, Ahmadian R, Daglia M, Rahimi R; J Agric Food Chem 2024; PMID 38189231) · read 2026-08-27
    what it says
    “Parsley is traditionally used as a diuretic, liver and stomach tonic, and for urolithiasis and indigestion … there is a big lack in clinical evidence.”
  2. Renal health benefits and therapeutic effects of parsley (Petroselinum crispum): a review (Alobaidi S; Front Med 2024; PMID 39735703) · read 2026-08-27
    what it says
    “limited human studies revealed modest improvements in urinary composition and renal health markers. However, parsley's safety profile, particularly at high doses, requires further investigation, including potential herb-drug interactions and safety during pregnancy.”
  3. HSA Singapore — Health Supplements Guidelines (January 2026), Table 6: Examples of Diseases/Conditions/Disorders Not Allowed for Health Supplements · read 2026-08-27
    what it says
    “Renal system — Kidney stones, renal failure, nephritis, urinary tract infection, incontinence, cystitis”
  4. HSA — Guidelines on Prohibited and Restricted Ingredients in Health Supplements and Traditional Medicines (Oct 2025), Annex A (118 rows, Abrus to Zinc) and Annex B (4 rows) — both searched, no row for this ingredient · read 2026-08-27
    what it says
    “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.”
  5. HSA Singapore — Health Supplements Guidelines (January 2026), clause 4.8 and Tables 4–5 (vitamins and minerals only) · read 2026-08-27
    what it says
    “HS for use by the general adult population should not contain vitamins and minerals exceeding the stipulated limits stated in Tables 4 and 5.”
  6. iHerb Singapore — Parsley Supplements category page, default order (1 - 10 of 10 results); first 5 distinct brands: Micro Ingredients, Swanson Vitamins, Nature's Way, Nature's Truth, Solaray · read 2026-08-27
    what it says
    “Micro Ingredients, Chlorophyll … Swanson Vitamins, Parsley … Nature's Way, Parsley Leaf … Nature's Truth, Odorless Garlic Plus Parsley … Solaray, True Herbs, Parsley Leaf”
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Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.