Vitamin D3 dosage guide — how much to take, cofactors like K2 and magnesium, and testing your levels.
Most people think of vitamin D3 timing as a minor detail, but the research on absorption actually gives clear guidance that changes how much you get from the same supplement. There’s also the question of whether morning or evening timing affects sleep, energy, or other outcomes. Here’s what the evidence shows, and what a well-designed … Read more
The Uncomfortable Truth: You Probably Can’t Feel It Working Most supplements give you something to notice. Take magnesium before bed and you sleep better. Take caffeine and you feel it in 20 minutes. Take a quality probiotic and your digestion changes within days or weeks. Disclosure: This post contains affiliate links. We may earn a … Read more
The vitamin D dosage question has two answers: the official government answer and the research-supported practical answer. They differ substantially, and understanding why matters for getting real benefit from supplementation. The Official RDA and Why It Falls Short The current Recommended Dietary Allowance (RDA) for vitamin D is 600 IU per day for adults under … Read more