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Brand names: Lactaid Ultra (Lactaid Fast Act), Lactrase, Lactrase Ultra, Lac-Dose
Drug class: digestive enzymes

What is Lac Dose?

Lac-Dose, an enzyme, helps your body break down lactose found in dairy products. Consuming dairy products can cause diarrhoea, gas, or bloating if you are lactose intolerant.Lac-Dose is a dietary product that helps prevent the symptoms of lactose-intolerant people who consume dairy products or milk.Lac-Dose may not be effective for treating medical conditions. The FDA has not authorized this product for medicinal use.. This medicine is not intended to replace medication prescribed by your doctor.Lac-Dose can be sold as a nutritional supplement. Supplements are not subject to any manufacturing standards, and some products on the market have been found to be contaminated with toxic drugs or metals. To minimise the risk, it is important to purchase dietary supplements from a reputable source.Lac-Dose can also be used in other ways not mentioned in this guide.

Side effects of Lac-dose

If you experience any of the following signs and symptoms of an allergic reaction: hives, difficulty breathing and swelling to lips, face, tongue or throat. Seek medical assistance immediately!You may experience less serious side effects or none at all.There may be other side effects. Call your physician if experiencing side effects; for reporting purposes call the FDA directly at 1-800-FDA-1088.


Use exactly as directed on the package and label. Respect the directions on both labels and packages.

Before you take this drug

This product contains phenylalanine, which could be harmful to those with phenylketonuria.If you have any other medical conditions, ask your doctor, pharmacist, or other healthcare provider whether it's safe to use the product.Do not give Lac Dose to children younger than four years of age.Consult your doctor before using the product if you are pregnant or nursing.

How to take Lac Dose?

Consult your doctor before using a supplement. Consider consulting a herbalist or health supplement specialist.Use Lac-Dose only as directed on the label or by your doctor or pharmacist. Use only the recommended amount of this product.Lac-Dose should be taken with your first sip or bite of any dairy product. This medicine can be taken daily with any meal or snack containing dairy.Take Lac-Dose once more if you continue to consume dairy products within 30 to 45 minutes.If you continue to experience symptoms of lactose insensitivity or if they worsen while using the product, call your doctor.Store away from moisture or heat. Store in room temperature conditions away from moisture and heat sources.

What happens if I miss the dose?

Do not take two doses at once. Take no more than one dose at a time.

What happens if I overdose?

A lac-dose overdose is unlikely to result in serious symptoms.

What should be avoided?

Lac-Dose may be less effective if you take your dose too soon or too late after a meal containing dairy.

Interaction with other drug

Lac-Dose may be affected by other drugs, such as vitamins and herbal remedies. Inform your doctor of all the other medications you take.




Prescription only

Pregnancy & Lactation

CSA Schedule*
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