Vitamin D supplements
Vitamin D is something humans can benefit from, and since many of us do not get enough from sunlight alone, supplements are available. Unfortunately, high levels of Vitamin D cannot be excreted by our pets, and therefore accidental ingestion, especially in large amounts, can prove very dangerous. Vitamin D can be found in multivitamins, D2 or D3 tablets, capsules, or liquids, and can also be found in psoriasis creams. Psoriasis formulations can be deadly, while regular supplements can cause moderate symptoms depending on the amount ingested.