On September 24, 2015, the Board issued an Exposure Draft of the proposed Accounting Standards Update, Notes to Financial Statements (Topic 235): Assessing Whether Disclosures Are Material. The due date for comment letters is December 8, 2015.
The most well known vitamins for circulation are from the B complex group. Livestrong.com explains that these vitamins are most effective when working together in a grouping, with vitamins B6, B12, B1 and B3 all providing some benefit to the circulatory system.
Working in two ways both by toning blood vessels as well as preventing damage to the circulatory system by free radicals, vitamin C plays an important role in ensuring that blood flows freely throughout the body. And, having enough and avoiding deficiencies can help to improve circulation.