What Are the Dangers of Using Threelac?

Written by lynn rademacher
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What Are the Dangers of Using Threelac?
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Threelac is a probiotic whose manufacturer claims to be a holistic and healthy supplement to treat fungal overgrowth in the intestines as well as to assist in cleansing the colon. However, whenever starting a new regimen, it is important to consider the side effects and risks a product may cause whether it is considered holistic or not. Individuals with food allergies need to make sure they are informed about the ingredients in holistic medicine, as it may cause a severe allergic reaction.

Milk Allergies

The ingredients in Threelac include two types of milk bacteria. Individuals who suffer from a milk allergy or who are lactose intolerant could have allergic reactions when taking Threelac. Depending on the severity of the allergy, the reaction could range from a mild rash to diarrhoea and other digestive symptoms. Some individuals may react more severely to milk proteins in Threelac than they would to drinking a glass of milk, often resulting in respiratory reactions.

Die Off

The makers of Threelac claim the product can help with an overgrowth of fungus called Candida in the digestive tract. However, if the fungus is reduced too quickly, it can cause a “die off” effect, which can make an individual feel like they have the flu. This side effect is caused by toxins released as the fungus dies and are moved from the body.

Yeast Allergy

Brewers yeast is an ingredient in Threelac and will cause problems for individuals who are allergic to yeast. Symptoms of a reaction to yeast include severe headaches, diarrhoea, vomiting and rashes. Individuals with elevated yeast levels before starting Threelac may develop yeast infections.

Drug Interaction

The brewers yeast in this probiotic has the potential to interfere with some depression medications. Pain killers that contain Demerol will react with Threelac, which could result in a sudden increase of blood pressure and could potentially cause a heart attack.


Before starting any new supplement it is important to consult a physician. Inform the doctor of all medications you are taking. If the side effects become too severe, a physician should be consulted and the use of Threelac suspended until the doctor has reviewed the case. It is important to remember Threelac is a pharmaceutical-grade product, so the instructions need to be closely followed.

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