Vitamin D3 125mcg (5000 IU) by Pure Encapsulations

Indoor workers at northern latitudes and darker‑skinned adults often need more than a token dose of vitamin D. Vitamin D3 5000 IU suits adults whose Vitamin D, 25-Hydroxy is low or in the lower normal range and who want a time‑limited repletion plan. It also fits higher body weight, older adults, or those with low sun exposure. If you’ve had bariatric surgery or fat malabsorption, this dose is common, but confirm with your clinician. For long‑term maintenance once levels improve, most people step down.

Cholecalciferol (vitamin D3) is the form your skin makes from sunlight and is better at raising Vitamin D, 25-Hydroxy than D2. Your liver and kidneys convert it into the active hormone that boosts calcium absorption from the gut and helps regulate bone turnover. Adequate D3 also reins in parathyroid hormone (the signal that pulls calcium from bone). Claims that D prevents common infections are overstated; large randomized trials have shown little to no effect on respiratory illness in most people.

Take one capsule daily with a meal that contains some fat for better absorption. Recheck Vitamin D, 25-Hydroxy in 8 to 12 weeks to confirm you’re in range, then adjust. Many clinicians use 5000 IU daily for short-term repletion, then shift to a lower maintenance dose. Morning or evening is fine. If you miss days, do not load extra without guidance; steady intake works best.

Skip unsupervised high-dose D if you have a history of high calcium, recurrent kidney stones, sarcoidosis or other granulomatous disease, or primary hyperparathyroidism. Thiazide diuretics (for blood pressure) raise calcium and can compound risk with high D. Orlistat and bile acid binders like cholestyramine reduce absorption. Some anticonvulsants and long-term steroids increase vitamin D needs. Pregnancy and breastfeeding require clinician guidance on dose.