Could You Have Too Much Vitamin D? - Verywell Health
www.verywellhealth.com › too-much-vitamin-d-8401436Nov 24, 2023 · Too much vitamin D can cause health problems, including high blood calcium levels, kidney problems, and gastrointestinal problems such as nausea, vomiting, loss of appetite, and constipation. Too much vitamin D can also lead to altered mental health, such as confusion, apathy, depression, irritability, hallucinations, and psychosis.