Derived from Stevia rebaudiana, a South American plant, stevia is a commonly used natural sweetener. Unlike sugar and honey, stevia contains no calories and doesn't significantly raise your blood sugar levels. Despite these benefits, adverse reactions to stevia may occur. Discuss any concerns or questions you may have about stevia side effects with your health care provider.
Hypersensitive Reaction
An adverse hypersensitive reaction called anaphylaxis may arise in certain people following consumption of stevia. You may be more likely to experience this adverse reaction if you also have an allergy to ragweed, daisies or marigolds. A hypersensitive reaction may cause chest tightness, wheezing, shortness of breath, difficulty swallowing, facial swelling, pale skin, weakness and dizziness. Consult an emergency medical provider if you exhibit any of these hypersensitive reaction symptoms. If left untreated, this type of allergic reaction may be life-threatening.
Gastrointestinal Effects
Stevioside -- a substance found in stevia -- may cause adverse gastrointestinal effects. After consuming stevia, you may experience nausea, bloating or gas. These stomach-related side effects may contribute to a temporary loss of appetite. Seek additional care from your physician if stomach discomfort persists or becomes severe.
Additional Adverse Reactions
Infrequently, additional adverse reaction may occur following ingestion of stevia. This herbal sweetener may cause uncomfortable body aches or unusual body sensations, such as numbness. You may also feel dizzy or lightheaded, which may negatively affect your ability to stand up or move about without assistance. Contact your doctor for additional medical care if these side effects become bothersome or severe.
Adverse Drug Interactions
Inform your physician about all medications you are taking before using stevia. Stevia may reduce your blood sugar levels, which may be a problem if you are taking medication for diabetes. Concomitant use of a diabetes drug and stevia may significantly reduce your blood sugar, causing a side effect called hypoglycemia. Consuming stevia may also lower your blood pressure, so it should not be used in conjunction with drugs for hypertension, or high blood pressure. Avoid using stevia together with lithium, as this combination may make it harder for your body to metabolize and excrete lithium.
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