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Supplement Forms/Alternate Names:

Lomatium dissectum, fernleaf biscuitroot, desert parsley


Lomatium is a plant that grows in North America. The root has been used to ease influenza symptoms and help the body fight illness. It can be taken as an extract or tincture.


There aren’t any advised doses for lomatium.

What Research Shows

Not Enough Data to Assess

There is not enough data to support that lomatium is helpful in treating health problems. We will review future studies as they are published.

Editorial process and description of evidence categories can be found at EBSCO NAT Editorial Process.

Safety Notes

Not enough studies have been done to say whether lomatium is safe to take for a short or long period or by women who are pregnant or breastfeeding. Lomatium may cause a rash.A1


Talk to your doctor about any supplements or therapy you would like to use. Some can interfere with treatment or make conditions worse.



A1. Marshall KD, Thornton SL. Worse than the disease? The rash of lomatium dissectum. Kans J Med. 2018 May 18;11(2):1-6.

Last reviewed March 2020 by EBSCO NAT Review Board Eric Hurwitz, DC  Last Updated: 6/22/2020