It adds: “However, your doctor might recommend higher doses of vitamin D if he or she is checking your blood levels and adjusting your dose accordingly.”
Although toxicity can be dangerous, the NHS says there are also symptoms of a vitamin D deficiency, which can be harmful too.
The health body says that these can include muscle aches and weakness, a waddling gait, chronic widespread pain, or bone pain in the lower back, pelvis and foot.
Dietary vitamin D is available in foods such as oily fish, cod liver oil, red meat, fortified cereals, fortified margarine/spreads and egg yolks.