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Lac-Dose

Generic name: lactase

Brand names: Lactaid, Lactaid Fast Act, Lactaid Ultra, Lac-Dose, Lactrase, Surelac

Last updated November 2, 2026 0 views
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What is Lac-Dose?

Lac-Dose is an enzyme that helps your body break down lactose found in dairy products. If you have lactose intolerance, eating a dairy product can lead to gas, bloating, stomach pain, or diarrhea.

Lac-Dose is a dietary supplement that can help prevent these symptoms for people with lactose intolerance who consume milk or other dairy products.

It is not clear if Lac-Dose is effective for treating any medical condition. The FDA has not approved this product for medicinal use. This medicine should not be used instead of any medication prescribed by your doctor.

Lac-Dose is commonly sold as a dietary supplement. There are no regulated manufacturing standards for supplements, and some products have been found to be contaminated with toxic metals or other drugs. It is important to buy dietary supplements from a trustworthy source to reduce the risk of contamination.

Lac-Dose may also be used for reasons not mentioned in this product guide.

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How should I take Lac-Dose?

When thinking about taking a supplement, ask your doctor for advice. You might also want to speak with a practitioner who is trained in herbal or health supplements.

If you decide to use Lac-Dose, follow the instructions on the package or those given by your doctor, pharmacist, or other healthcare provider. Do not use more of this product than what is recommended on the label.

Take Lac-Dose with the first bite or sip of any dairy product you eat or drink. You can take this medicine every day with every meal and snack that has dairy.

If you have more dairy products after 30 to 45 minutes, take Lac-Dose again.

Contact your doctor if you still have symptoms of lactose intolerance or if your symptoms worsen while using this product.

Store at room temperature, away from moisture and heat. Do not refrigerate.

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Warnings

Follow all directions on the label and package.

Use exactly as directed.

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Before taking this medicine

This product may contain phenylalanine and could be harmful if you have phenylketonuria (PKU).

Ask a doctor, pharmacist, or other healthcare provider if it is safe for you to use this product if you have other medical conditions.

Do not give Lac-Dose to a child younger than 4 years old.

Ask a doctor before using this product if you are pregnant or breastfeeding.

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Lac-Dose side effects

Get emergency medical help if you notice signs of an allergic reaction: hives; trouble breathing; swelling of your face, lips, tongue, or throat.

Less serious side effects may happen more often, and you might not experience any at all.

This is not a complete list of side effects, and other side effects may happen. Contact your doctor for medical advice about side effects. You can report side effects to the FDA at 1-800-FDA-1088.

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What happens if I miss a dose?

Take your dose as soon as possible at the start of a meal or snack. Do not take two doses at the same time.

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What happens if I overdose?

An overdose of Lac-Dose is not likely to cause serious symptoms.

Do not take your dose too early or too late compared to a meal that has dairy, or Lac-Dose may be less effective.

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What other drugs will affect Lac-Dose?

Other drugs may affect Lac-Dose, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all other medicines you use.

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Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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Content is provided for education and is not medical advice. See our medical disclaimer.