Although unlikely, MedlinePlus states that psyllium powder can cause an allergic reaction in some people. Most psyllium powder is made from blonde psyllium by using the husk from the herb. It is commonly used as a dietary supplement for people suffering from various digestive conditions. Before using psyllium powder supplements, talk to your doctor about the safety and dosing you should use. If you experience adverse reactions after taking the supplement, discontinue use and call your doctor.
Cause
If you're allergic to psyllium powder, your immune system mistakes the substance as unsafe and begins to build a defense against it. The immune system creates certain antibodies, called Immunoglobulin E or IgE, to fend off the herb. Antibodies are fighting agents in the body used to prevent unwanted viruses and bacteria from affecting the body. IgE antibodies cause mast cells to produce histamine in soft tissue, resulting in inflammation and irritation, according to the American Academy of Allergy, Asthma and Immunology.
Symptoms
If you experience an allergic reaction to psyllium powder, common symptoms include itching, a rash and shortness of breath, according to Aetna InteliHealth. Many symptoms begin around the mouth but can develop anywhere in the body. Other symptoms may include nasal congestion, digestive issues and other asthma symptoms. You may experience allergy symptoms if you have a known allergy to ispaghula, English plantain or psyllium.
Severe Symptoms
Psyllium powder can cause a severe allergic reaction, called anaphylactic shock. Anaphylactic shock is a life-threatening condition that causes constriction in your airways, a drop in blood pressure and an increased heart rate. Symptoms of a severe allergic reaction to psyllium powder include wheezing; swelling of the face, chest or throat; shortness of breath; and loss of consciousness, according to MedlinePlus. Call 911 immediately at the first sign of these symptoms.
Treatment
Minor allergic reactions, such as skin inflammation and nasal congestion, may respond to an oral antihistamine. Antihistamines block the body's ability to produce histamine, reducing common allergy symptoms. Topical steroid lotions may be used to reduce the swelling and itchiness of common allergy rashes. If you experience anaphylactic shock, you may require an injection of epinephrine.
Testing
Your doctor may recommend further testing to confirm an allergy to psyllium powder. An allergist will perform various tests on your body to determine if your immune system produces IgE antibodies when exposed to the substance. The two most common tests are a skin prick test and blood test.
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