Zinc Lozenges May Shorten Colds, Experts Suggest

While no definitive cure exists for the common cold, certain remedies, particularly zinc lozenges, may help shorten its duration, according to some experts. As winter illnesses like COVID-19 and the flu see a surge, research suggests that the effectiveness of zinc depends on its form and dosage.

Studies reviewed indicate that sucking on zinc lozenges, rather than swallowing them, may be key to their potential benefit. The zinc ions released in the mouth and throat are believed to interfere with viral replication. However, the exact concentration and type of zinc formulation are crucial for any potential impact. Ordinary zinc supplements in forms like capsules or pills are generally considered less effective for colds because they may not release sufficient zinc ions in the upper respiratory tract.

Experts emphasize that not all zinc supplements are created equal, and some may not contain the necessary components or dosages to produce a noticeable effect on cold symptoms. The precise scientific consensus on the efficacy of zinc for colds is still evolving, with recommendations often hinging on specific study parameters. Available data suggests that a proper zinc gluconate or acetate lozenge, taken at the onset of symptoms, might reduce the duration of a cold by up to three days for some individuals. However, it is important to use these supplements as directed to avoid potential side effects.