Liposomal Vitamin D3 5000 IU by Dr. Mercola

If your Vitamin D, 25-Hydroxy is low or stuck in the lower end despite a basic multivitamin, vitamin D3 5000 IU is a practical step-up. It fits adults with little sun exposure, darker skin, higher body weight, or those on restrictive diets. Liposomal vitamin D3 is also reasonable for people with fat-malabsorption issues who don’t absorb standard softgels well. If your level is only slightly low, this is more than a maintenance dose, so plan to recheck labs and step down once repleted.

Cholecalciferol (vitamin D3) is the same form your skin makes from sunlight, and it raises blood Vitamin D, 25-Hydroxy more reliably than D2. In liposomal vitamin D3, the D3 is wrapped in phospholipids from sunflower lecithin so it mixes with water and fat more easily, which can improve uptake in some people. Adequate D3 increases calcium absorption from the gut and helps restrain parathyroid hormone (the signal that pulls calcium from bone). Take it for bone and metabolic health; the infection-prevention hype did not hold up well in randomized trials.

Take one capsule daily with food as directed by Dr. Mercola, since dietary fat still helps absorption even with a liposomal format. Recheck Vitamin D, 25-Hydroxy after 8–12 weeks and adjust. This dose often suits repletion or higher ongoing needs; once your level is steady, many people transition to a lower maintenance dose. If you also take calcium, separate large doses to avoid stomach upset.

Avoid high-dose vitamin D3 if you’ve had high calcium, recurrent kidney stones, sarcoidosis or other granulomatous disease, or certain lymphomas, unless your clinician is monitoring calcium and Vitamin D, 25-Hydroxy. Thiazide diuretics (blood pressure meds that reduce calcium loss) raise the risk of high calcium when combined with high-dose D3. Orlistat and bile acid sequestrants (fat-blocking drugs) reduce absorption, so take vitamin D3 at a different time.