Health Guide


What is it?

Reishi is mushroom that is often used by herbalists. It is used for altitude sickness, cancer, fatigue (tiredness), hepatitis, hypertension (high blood pressure), hypertriglyceridemia (high triglycerides), post-herpetic neuralgia (nerve pain following a herpes infection), and to help thin the blood.

Other names for Reishi include: Ganoderma lucidum, Ling Chih, and Ling Zhi.

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 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 any other health problems, such as high blood pressure or heart or blood vessel disease


Talk with your caregiver about how much Reishi you should take. The amount depends on the strength of the medicine and the reason you are taking Reishi. 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 Throw away medicine that is out of date or that you do not need.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.


  • Before taking Reishi, tell your doctor if you are pregnant or breastfeeding

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.

  • Taking Reishi for a long period of time has caused dizziness, dry mouth and throat, nose bleeds, and upset stomach (5)


1. Lininger S (ed): The Natural Pharmacy. Prima Health Publishing, Rocklin, CA; 1998.

2. Jones K: Longevity herb of the orient. Part 2. Townsend Letter Doctors, 1992; Nov:1008.

3. Hijikata Y & Yamada S: Effect of Ganoderma lucidum on postherpetic neuralgia. Am J Chinese Med 1998; 26(3-4):375-381.

4. Tao J & Feng KY: Experimental and clinical studies on inhibitory effect of Ganoderma lucidum on platelet aggregation. J Tongii Med Univ 1990; 10(4):240-243.

5. McGuffin M, Hobbes C, Upton R et al: American herbal Products Association's Botanical Safety Handbook. CRC Press, Boca Raton, FL; 1997.

Last Updated: 7/4/2018
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