At least 56 companies selling 10,000 IU capsules of vitamin D3
At least 15 companies selling 50,000 IU capsules of vitamin D3
USA today stating “but at levels of 2000 IU or more daily, vitamin D can be toxic”.
The 2000 IU toxicity scare got started in the 1950’s, was proven wrong in the 1960’s and has persisted now for over 50 years.
This recalls the Holloween scare of poisoned candy which also lasted for a half a century.
An overview of vitamin D toxicity on the VitaminDWiki has the following graph