Health experts have warned that people taking vitamin D supplements this winter may be at risk of overdosing if they combine them with other products. The NHS recommends a daily 10 microgram (400 IU) supplement between October and early March to maintain healthy bones, muscles and teeth, but taking too much can be harmful.
Problems arise when individuals take vitamin D alongside other supplements such as immune gummies or multivitamins, inadvertently doubling their intake. The NHS advises that adults, including pregnant and breastfeeding women, should not exceed 100 micrograms (4,000 IU) per day, as excessive amounts can lead to hypercalcaemia, a condition where too much calcium builds up, weakening bones and potentially damaging the kidneys and heart.
Vitamin D is also found in foods like egg yolks, fortified cereals, red meat and oily fish. However, many people turn to supplements, often influenced by social media. Dermatologist Dr Charles MD, with 1.8 million TikTok followers, has promoted vitamin D for acne, stating that 1,000 IU per day can help fade dark spots and reduce breakouts.
Oliver Weston, SEO expert at Four Pillar SEO, warned that shoppers may follow influencer tips and product claims, leading to overlapping supplements. He advised: “Online advice can be useful for awareness, but it should not replace trusted guidance. If someone is unsure, they should check with health professionals first and not copy a random stack from social media.”
