What Is Ganoderma Extract Downside?

Ganoderma extract derived from the reishi mushroom does not have to be standardized, unlike pharmaceuticals. According to Shu-ting Chang and Philip Miles, authors of "Mushrooms: Cultivation, Nutritional Value, Medicinal Effect, and Environmental Impact," the extract is available as a nutritional supplement, or nutraceutical. Ganoderma also may temporarily worsen symptoms.

Nutraceutical

• A nutraceutical is extracted from a food and is not subject to the same strict controls that regulate the production and use of pharmaceuticals, which typically consists of synthetic chemical preparations. Ganoderma extracts are not standardized and can vary considerably in origin, preparation and quality.

Different Mushrooms

• According to Brunzel et al, authors of "Herbs & Natural Supplements: An Evidence-Based Guide," there is some confusion regarding the classification of different strains of reishi mushrooms. This is one reason why ganoderma extracts of different strains can vary in medicinal properties. This in turn can lead to different results in clinical studies. Ganoderma has antibiotic, anti-inflammatory, and anti-cancer effects, according to GanodermaforHealth.com.

Temporary Reactions

• Ganoderma may produce some temporary reactions that may seem to be a worsening of symptoms, but may instead be an important part of the healing process. Reactions include itching, pain, diarrhea, acne, swelling in the legs, increase in blood sugar and blood pressure. These reactions may last a few days to a few weeks. Reducing the dosage by half can ease discomfort. After that, full dosage should be resumed. Ganoderma extract has no known long-term side effects.