Lactaid Fast Act Side Effects
Generic name: lactase
Medically reviewed by Drugs.com. Last updated on Mar 3, 2023.
Note: This document contains side effect information about lactase. Some dosage forms listed on this page may not apply to the brand name Lactaid Fast Act.
Applies to lactase: oral tablet, oral tablet chewable.
Serious side effects of Lactaid Fast Act
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
Other side effects of Lactaid Fast Act
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if you have any side effects that bother you or do not go away.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.
For Healthcare Professionals
Applies to lactase: oral capsule, oral liquid, oral tablet, oral tablet chewable.
In general, side effects have not been reported with the use of lactase (the active ingredient contained in Lactaid Fast Act) [Ref]
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- Drug class: digestive enzymes
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Related treatment guides
1. "Product Information. Lactaid (lactase)." McNeil Consumer Healthcare (2005):
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.