Aller-DMG By DaVinci Laboratories of Vermont Overview & Drug Interactions

Quercetin is a type of flavonoid, which is a class of compounds found in a wide variety of plants and foods. It is purported to have a number of health benefits such as anti-inflammatory, antioxidant, and immune-boosting effects. Studies suggest it may also help to reduce the risk of certain chronic diseases, such as heart disease. In addition, quercetin may have anti-allergic properties and may be helpful in the treatment of allergies and asthma. It is a popular dietary supplement worldwide and is often included in products that contain antioxidants or various vitamins/minerals. Its wide range of potential health benefits mean that it could potentiate the effects of other drugs (e.g., anti-hypertensives), which is why there are an abundant number of potential interactions listed for quercetin.

Bromelain is a group of proteolytic enzymes derived from pineapples. It has been traditionally used for its anti-inflammatory and protein-digesting properties. Some research suggests it may have potential benefits for conditions such as allergic rhinitis, burns, cancer, diabetic foot ulcers, and postoperative pain, among others. However, the evidence for its effectiveness in these areas is lacking, and more research is needed. It is important to note that bromelain should not be confused with other protein-digesting enzymes. Pregnant and lactating individuals should avoid using bromelain due to insufficient information about its safety in these populations.

N-acetyl cysteine (NAC) is derived from the amino acid cysteine. It is used as a prescription medication to treat acetaminophen overdose and to help thin mucus in people with certain respiratory conditions. It is also used as a dietary supplement. NAC has a number of potential health benefits. It is a source of the antioxidant enzyme glutathione, which is important for protecting cells from oxidative stress and supporting immune function. It also may have anti-inflammatory effects and studies show it may support healthy brain function. It is generally considered safe to take NAC supplements in recommended doses.

Grapes are widely grown and cultivated for a variety of uses such as for food and beverage making (e.g., wine). They also have a long history of use in traditional medicine. The fruit and skin of grapes contain various compounds that are believed to have health benefits, including antioxidants such as resveratrol and flavonoids. These compounds may help to protect cells from damage and are purported to reduce the risk of certain chronic diseases. Grapes and grape products may also have anti-inflammatory properties, which may help to reduce inflammation in the body and potentially improve symptoms of certain conditions. Grape seed extracts are also commonly used as a dietary supplement and are often standardized according to the content of polyphenols or proanthocyanidins.

Perilla frutescens, an annual plant native to Asia, is valued for its diverse applications in cooking, manufacturing, and traditional medicine. Its leaves, stem, and seeds are utilized in traditional Chinese medicine for their rich content of flavones like apigenin, luteolin, shishonin, and vicenin-2, as well as beneficial compounds such as alpha-linolenic acid, rosmarinic acid, and policosanol. These components are purported to contribute to a range of health benefits, including potential anti-allergy properties that may alleviate symptoms like atopic dermatitis and airway inflammation, possibly by reducing inflammatory mediators and mast cell activity. Its anti-inflammatory effects, which may involve inhibiting cytokine production and modulating immune cell activity, align with its traditional uses for allergies, asthma, and gastrointestinal issues. Moreover, perilla is said to exhibit antimicrobial effects, with its seed extract, oil, and essential oil showing potential activity against bacteria and fungi. Laboratory research suggests potential nephroprotective effects, indicating that perilla may inhibit the proliferation of mesangial cells in kidney disorders.