Milk is widely regarded as a healthy beverage rich in essential nutrients, such as calcium, protein, and vitamins necessary for bone and muscle health. However, this same nutritional value can, in some cases, become a negative factor when consumed alongside certain medications or supplements. Its components can interfere with absorption mechanisms within the digestive system and reduce the effectiveness of treatment.
According to a recent health report published on Verywell Health, specialists warn that combining milk with certain medications or supplements may lead to reduced absorption or diminished therapeutic effects, especially in individuals with nutritional deficiencies or chronic illnesses requiring strict adherence to treatment.
Experts point out that calcium, along with proteins like casein and fats found in milk, can chemically bind to some medications within the digestive tract, preventing their adequate absorption. In this context, doctors recommend avoiding milk with the following supplements and medications:
Iron supplements:
Iron is one of the elements most affected by milk consumption, as calcium interferes with its absorption. Casein protein also contributes to reducing the amount of iron that reaches the bloodstream. This is particularly concerning for those with anemia or pregnant women.
Doctors advise leaving at least a two-hour gap between taking iron supplements and consuming milk or calcium-rich foods. It is also recommended to take iron with water or foods rich in vitamin C to enhance absorption.
Zinc supplements:
Multiple studies show that calcium can hinder zinc absorption, especially when taken in its pharmaceutical form, such as zinc sulfate or zinc gluconate. The two minerals compete for the same absorption pathways in the intestines, which may reduce the body's utilization of zinc, essential for boosting immunity and accelerating wound healing. It is preferable to take zinc supplements separately from dairy products, ideally with a snack containing protein or vitamin C.
Magnesium supplements:
While there is no conclusive evidence that milk directly inhibits magnesium absorption, the shared absorption mechanisms between magnesium and calcium may slightly reduce the benefit.
Therefore, experts recommend taking magnesium supplements with water and leaving a one- to two-hour gap between taking the supplement and consuming milk or dairy products.
Thyroid medications:
Medical research has shown that milk may reduce the absorption of levothyroxine, a medication used to treat hypothyroidism, due to calcium and protein binding to the drug molecules in the intestines.
Doctors advise taking this medication in the morning on an empty stomach with water only, waiting 30 to 60 minutes before breakfast, and avoiding dairy products for up to four hours afterward.
Certain antibiotics and other medications: This category includes common antibiotics such as tetracyclines and fluoroquinolones, as well as some medications for heart conditions, blood pressure, and gastrointestinal issues. The calcium in milk can bind to these medications, preventing their absorption and weakening their therapeutic effectiveness.
It is recommended to take these medications with water only, and to avoid milk and dairy products for two to three hours before and after taking them.
In conclusion, despite the numerous nutritional benefits of milk, the timing of its consumption plays a crucial role in ensuring the effectiveness of medications and dietary supplements. Experts emphasize the importance of carefully reading medication leaflets and not hesitating to consult a doctor or pharmacist if there is any doubt, to ensure maximum therapeutic benefit without unwanted side effects.
