Vitamin D-5,000 - NSF Certified for Sport

When you take this vitamin D3 capsule, your small intestine absorbs it along with dietary fats. The vitamin D travels to your liver where it converts to 25-hydroxyvitamin D. This is the form doctors measure in blood tests. Your kidneys then convert it to the active hormone calcitriol. Calcitriol acts like a hormone throughout your body. It helps your intestines absorb calcium and phosphorus from food. It signals your immune cells to function properly. It also influences over 1,000 genes that control everything from bone health to mood regulation. Thorne's vitamin D3 form absorbs better than synthetic D2. The 5,000 IU dose ensures most people reach optimal blood levels. NSF certification guarantees purity and potency in every capsule.

Vitamin D absorption depends heavily on what you eat with it. Take your capsule with meals containing healthy fats like eggs, avocado, or nuts. This increases absorption by 50% compared to taking it alone. Consistency matters more than perfect timing - pick a daily routine and stick with it. Certain nutrients work together with vitamin D for better results. Magnesium helps convert vitamin D to its active form. Vitamin K2 directs calcium to bones instead of soft tissues. Avoid taking calcium supplements at the same time as they can interfere with absorption. Monitor your progress with blood tests every 3-6 months. Aim for levels between 40-60 ng/mL for optimal health benefits. Adjust your dose based on test results and seasonal changes. Summer sun exposure might allow for lower doses while winter requires consistent supplementation.

At $19 for 60 capsules, this supplement costs $0.32 per serving. This positions it in the premium segment of the vitamin D market. Budget vitamin D supplements cost $0.10-0.15 per serving but often lack quality control and third-party testing. Mid-range options run $0.20-0.25 per serving with basic quality standards. Thorne's premium pricing reflects NSF Certified for Sport testing, pharmaceutical-grade manufacturing, and rigorous quality controls. Each batch undergoes testing for over 270 banned substances. The company maintains higher standards than required by FDA regulations. Generic brands can't match this level of testing and verification. When you factor in the NSF certification, third-party testing, and Thorne's reputation for quality, the price represents good value. Athletes and serious health enthusiasts often choose this over cheaper alternatives. The peace of mind from knowing exactly what you're getting justifies the premium cost.