10,000 IU vitamin D daily is safe, toxicity start at 150 ng (for monotherapy)– Jan 2013 | VitaminDWiki
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Vit4ever® Vitamin D3 20,000 IU Depot, 240 Tablets, High Dosage, Daily Dose 1000 IU per Day (Every 20 Days), One Tablet of Vitamin D Every 20 Days : Amazon.de: Health & Personal Care
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