Vitamin D

1.00 Capsule

once per day

Take with food

Ongoing

Additional notes

"Why it is here: To supply one modest daily amount of vitamin D3 for routine adequacy, not to reach a target blood level. How to take: With a meal. A meal containing some fat may improve absorption, although vitamin D is still absorbed without added fat. Published evidence: At equivalent doses, vitamin D3 generally raises and maintains the blood level more effectively than D2. Large, widely spaced doses have produced fall and fracture harm signals. Clinical experience (observation): For generally healthy adults who choose a supplement, 1,000 IU (25 mcg) once a day is my general recommendation for routine use. It is not an individualized prescription. Caution: Each capsule supplies 1,000 IU (25 mcg). Take 1 capsule a day and count vitamin D from every source, including multivitamins, bone formulas, and cod liver oil. The adult upper intake level is 4,000 IU (100 mcg) a day from all sources: a safety ceiling, not a goal. The label allows up to 5 capsules a day; this protocol does not. Review: Once a year, ask why you take it, how much you get from every source, and what would tell you to reduce, stop, or change it."