Dr. Doug Lucas discusses the controversy surrounding the pairing of two supplements. He explains the thought process behind the pairing and shares lab values that influenced the decision. Lucas also delves into the complexities of vitamin D supplementation and its impact on other nutrients. ALGAECAL DISCOUNT CODE: You can order by visiting AlgaeCal's website directly: http://algaecal.info/drdoug OHH10 at checkout to receive 10% off your first order! Valid on bulk pack options and single bottles only. Available to US and Canada only. We independently review everything we recommend. When you buy through our links, we may earn a commission at no additional cost to you.