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Herbal Extract

Parsley Extract (Petroselinum crispum)

Also known as: Petroselinum crispum extract, Parsley leaf extract, Parsley stem extract, Garden parsley extract

C
Evidence

Parsley extract is a culinary herb traditionally used for digestive support and as a natural diuretic, containing flavonoids and volatile oils. Limited clinical evidence exists for most purported benefits in humans.

Primary uses

  • Digestive support
  • Diuretic properties
  • Antioxidant support
  • Anti-inflammatory support

How it works

  • Flavonoid and polyphenol content may provide antioxidant effects
  • Volatile oils and apiol may support digestive function
  • Potassium content may contribute to diuretic properties

Dosage

Typical range
500–1500 mg daily (as dried extract powder)
Timing
With meals or as directed
With food
May be taken with or without food; with food may improve tolerability
Duration
Generally safe for long-term use; some traditional protocols limit to 6–8 weeks before a break
Special populations
Pregnant women should avoid supplemental parsley extract due to potential uterotonic effects; nursing mothers should consult a healthcare provider

Forms

  • Powder extract· 70/100
  • Dried leaf/stem· 70/100
  • Tincture· 70/100
  • Fresh herb· 70/100

Safety

Common side effects

  • Generally well-tolerated at typical doses
  • Possible photosensitivity in sensitive individuals
  • Rare: gastrointestinal upset

Contraindications

  • Pregnancy (especially large doses)
  • Kidney disease or renal impairment (diuretic effect)
  • Bleeding disorders or concurrent anticoagulant use (contains vitamin K)
  • Thyroid conditions (goitrogenic potential at very high doses)

Evidence notes

Parsley has a long history of traditional use and contains bioactive compounds (flavonoids, apiol, myristicin). However, human clinical trials are limited. Most evidence is from in vitro, animal studies, or traditional use data rather than controlled human trials.

Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.