Health Guide


What is it?

Parsley is an herbal medicine used to treat gas, kidney stones, nausea (upset stomach), and urine infections (in-FECK-shuns). It may also be used to treat edema (swelling) and high blood pressure. Other uses include the treatment of constipation (hard stools) and female problems, such as not having a monthly period. Parsley may be used to treat cuts, insect bites, lice, and dry or chapped skin.

Other names for parsley include: Common parsley, Garden parsley, Hamburg parsley, Persely, and Persil.

Ask your doctor, nurse, or pharmacist if you need more information about this medicine or if any information in this leaflet concerns you.

Before Using:

Tell your doctor if you

  • are taking medicine or are allergic (uh-LER-jik) to any medicine (prescription or over-the-counter (OTC) or dietary supplement)
  • are pregnant or plan to become pregnant while using this medicine
  • are breastfeeding
  • have liver or kidney problems
  • have any other health problems, such as high blood pressure or heart or blood vessel disease


Talk with your caregiver about how much parsley you should take. The amount depends on the strength of the medicine and the reason you are taking parsley. If you are using this medicine without instructions from your caregiver, follow the directions on the medicine bottle. Do not take more medicine or take it more often than the directions tell you to.

To store this medicine:

Keep all medicine locked up and away from children. Store medicine away from heat and direct light. Do not store your medicine in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down and not work the way it should work. Throw away medicine that is out of date or that you do not need. Never share your medicine with others.

Drug and Food Interactions:

Do not take parsley without talking to your doctor first if you are taking:

  • Blood thinning medicine (example: warfarin (Coumadin (R))(5)


  • Before taking parsley, tell your doctor if you are pregnant or breastfeeding
  • Do not use large amounts of parsley. Parsley seed oil is very strong and contains chemicals that may cause serious side effects (2,3). Talk to your caregiver before using parsley seed oil.
  • Do not use parsley if you have kidney (3) or liver disease (2)

Side Effects:

Stop taking your medicine right away and talk to your doctor if you have any of the following side effects. Your medicine may be causing these symptoms which may mean you are allergic to it.

  • Breathing problems or tightness in your throat or chest
  • Chest pain
  • Skin hives, rash, or itchy or swollen skin

Other Side Effects:

You may have the following side effects, but this medicine may also cause other side effects. Tell your doctor if you have side effects that you think are caused by this medicine.

  • Itching, redness, blistering of skin (after picking parsley) (4)
  • Blood, kidney, or liver problems (2)


1. Heck AM, DeWitt BA & Lukes AL: Potential interactions between alternative therapies and warfarin. Am J Health Syst Pharm 2000; 57(13):1221-1227.

2. Newall CA, Anderson LA & Phillipson JD (eds): Herbal Medicines: A Guide for Health-Care Professionals. The Pharmaceutical Press, London, England; 1996.

3. Blumenthal M, Busse WR, Goldberg A et al (eds): The Complete German Commission E Monographs, 1st ed. American Botanical Council, Austin, TX; 1998.

4. Stransky L & Tsankov N: Contact dermatitis from parsley (Petroselinum). Contact Dermatitis 1980; 6(3):233-234.

5. Product Information: COUMADIN(R) oral tablets, IV injection, warfarin sodium oral tablets, IV injection. Bristol-Myers Squibb Company, Princeton, NJ, 2007.

Last Updated: 7/4/2018
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