Marlin Johnson says he consumed one cup of Organo Gold coffee a day for two weeks in March 2013, “unaware of the product’s dangerous side effects.” He did this because of the possible health benefits from Ganoderma Lucidum. Johnson says he has since learned that “Ganoderma Lucidum is a natural blood thinner that prevents a person’s blood from clotting properly and causes intestinal bleeding and platelet dysfunction.”

The labeling of Organo Gold products does not contain warnings about these dangerous side effects. Organo Gold’s website describes the mushroom in magical terms: “Once upon a time there was a fungus – an incredible mushroom known as Ganoderma lucidum. Ganoderma are a fantastic-looking mushroom, resembling something supernatural, or straight out of a fairy tale such as Alice in Wonderland.”

Johnson says the product’s dangerous side effects became known to him after he underwent gastric bypass surgery in April 2013 and soon began “vomiting blood and suffering from blood clots.” When Johnson’s hemoglobin level dropped dangerously low, doctors allegedly discovered that his consumption of Organo Gold coffee was to blame. He had to be resuscitated with multiple blood and platelet transfusions and undergo an emergency surgery. – Source

Here are some additional Ganoderma side effects you should look out for:

Ganoderma LucidumDiarrhea and constipation can be caused by taking Ganoderma.

Itching is another common side effect. Rashes can appear all over the body. Itching may be accompanied by body aches and pains. Some users also experienced an increase in acne breakouts on the face.

Dizziness is another side effect and is often a sign of lowered blood pressure. Lowered blood pressure in turn causes lightheadedness and dizziness, and in some users, nausea.

Ganoderma has also been shown to cause problems in breathing. Nasal discomforts are common, although these are minor compared to difficulty breathing and chest pains. These symptoms are indicative of allergic reactions, which require immediate medical attention. It is important to determine if you may be allergic to Ganoderma before taking it for the first time to avoid severe allergic reactions later.

Severe Ganoderma side effects include liver problems and breathing problems which should be given immediate medical attention. Use of powdered Ganoderma has been associated with toxic effects on the liver. – Source WebMD