evidence: Frezzor New Zealand, a nutritional products company with international operations, launched the world’s first vitamin D3 supplement made exclusively from lanolin oil, a byproduct of wool production sourced during the annual shearing of sheep. "Only the wool lanolin from New Zealand’s 100% grass-fed free-range sheep is allowed to be used in the production of our vitamin D3 because we can track where it has come from, and this sends a clear message of trust that the consumer is receiving the highest integrity of this essential vitamin," Noel Turner, Frezzor founder and CEO, said.