9 Vitamins & Supplements That May Affect Your Liver and Kidneys If Misused

Vitamins and supplements are often marketed as harmless because they are available without a prescription. But “natural” does not automatically mean risk-free.

The liver processes many substances that enter the body, while the kidneys filter the blood and remove waste products. Taking excessive doses, combining several supplements, or using concentrated herbal extracts can sometimes place extra stress on these organs.

For most healthy people, vitamins taken at recommended amounts are unlikely to cause serious problems. The

concern is usually high-dose or prolonged supplementation, particularly in people who already have liver or kidney disease.

Here are nine vitamins and supplements worth using carefully.

1. Vitamin A

Vitamin A is essential for vision, immunity, reproduction, and normal cell growth.

However, excessive intake of preformed vitamin A, such as retinol or retinyl palmitate, can accumulate in the body because vitamin A is fat-soluble.