Natural Health Products

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California Poppy

General Information

The California poppy is the state flower of California. Historically, California poppy has been used to relieve insomnia, help with pain, and nervousness.

Common Name(s)
California poppy, yellow poppy
Scientific Name(s)

Eschscholzia californica Cham. (Papaveraceae)

How is this product usually used?

The aerial parts of the California poppy are used medicinally. It is a herb that is taken orally (by mouth). In general, the doses are: tincture: 1.5 g to 3.0 g dried equivalent, per day (1:2, 3 mL to 6 mL).

Your health care provider may have recommended using this product in other ways. Contact a health care provider if you have questions.

What is this product used for?

California poppy has been used for:

  • aiding sleep
  • relieving anxiety
  • relieving pain

More research is needed to find out whether California poppy is helpful for these purposes.

Your health care provider may have recommended this product for other conditions. Contact a health care provider if you have questions.

What else should I be aware of?

Common side effects from California poppy may include drowsiness.

California poppy can interact with different medications. It increases the effects of different sedatives including benzodiazepines (e.g., lorazepam, clonazepam, diazepam), barbiturates (e.g., phenobarbital), and opiates (e.g., morphine, methadone, oxycodone).

It also increases the effects of other herbal products that are used for relieving pain and/or that may also cause drowsiness (e.g., St. John’s wort, valerian, kava, Jamaican dogwood).

If you are using any of these medications or herbal products, you should consult your health care provider before using California poppy.

You should avoid using California poppy with alcohol as it may increase the risk of drowsiness. If California poppy makes you drowsy, you should not do activities that require alertness, such as driving or operating heavy machinery.

You should stop using California poppy at least 2 weeks before surgery as it may increase the effects of different surgery medications.

Consult a health care provider if your sleep problems last for more than 4 weeks in a row. If your symptoms persist or worsen after taking California poppy, you should also consult your health care provider.

Avoid using California poppy if you are allergic to it, its components, or related plants of the Papaveraceae family.

You should not use California poppy if you are pregnant or breast-feeding. Consult your health care professional if you have any questions.

Before taking any new medications, including natural health products, speak to your physician, pharmacist, or other health care provider. Tell your health care provider about any natural health products you may be taking.

  1. Health Canada. Drugs & Health Products. Monograph – California Poppy.
  2. Natural Medicines Comprehensive Database. California Poppy.

All material copyright MediResource Inc. 1996 – 2020. Terms and conditions of use. The contents herein are for informational purposes only. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.