Vitamin D3 side effects, whether from deficiency, toxicity, or allergy are all possible. Vitamin D is important for normal calcification to create strong bones and teeth and for developing a healthy nervous system. Vitamin D3 is manufactured in the human skin when in contact with the ultraviolet light in the sun’s rays or animal foods. Good sources of D3 include oily fish, beef liver, cheese, butter and egg yolks.
- Side effects of Vitamin D3 deficiency. The most common deficiency in Vitamin D3 is the now almost unheard of rickets. Due to fortified milk, rickets is a disease of the past. A more common symptom of deficiency, especially in the elderly, is general bone loss and osteoporosis.
- Minor side effects of Vitamin D3 toxicity. Constipation, excessive thirst, nausea, vomiting, general weakness, mild dizziness, lethargy and weight loss are all symptoms of Vitamin D3 overload. It makes you wonder if sun exposure symptoms can also be the direct effect of over exposure to D3.
- Major side effects to Vitamin D3 toxicity Hypercalcaemia, or high calcium levels, which comes from extreme amounts of vitamin D3, generates high blood pressure, which over time results in heart disease. Another side effect from persistent high levels of vitamin D3 can produce kidney and bladder stones.
- Side effects of Vitamin D3 allergy. An allergic reaction to Vitamin D3 is rare and happens normally when supplementing with the Vitamin. Rashes, dizziness, breathing issues, or swelling of the face, tongue, or throat are all signs of an allergy. Seek medical attention as soon as symptoms arise.