A pharmacist is urging caution for those who take vitamin D supplements, warning that overconsumption can pose serious health risks. While our bodies produce vitamin D from sunlight and we can get it from food, many people still turn to supplements. In the UK, a recent study found that about half of the population has insufficient levels.

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Jana Abelovska, Superintendent Pharmacist at Click Pharmacy, emphasizes that while supplements are useful, they must be used wisely. "The best way to get vitamin D is through your diet, supported by supplements like tablets, capsules, gummies, or sprays," she explained. She also highlighted a key tip for absorption: "Since vitamin D is fat-soluble, taking your supplement with food containing healthy fats, such as nuts or yoghurt, will help your body absorb it much better."

The recommended daily amount for adults is 600 IU (International Units), or 15 mcg. However, the danger lies in exceeding this. Abelovska cautions, "Don’t take too much vitamin D. Because it’s a fat-soluble vitamin, it can build up in your body easier than other vitamins."

Taking more than the safe upper limit of 4,000 IU (100 mcg) per day long-term can lead to hypercalcemia—a dangerous excess of calcium in the body. This condition can cause damage to the heart, kidneys, and bones. This warning is echoed by the NHS, which advises that no one should exceed this daily limit.