You can’t beat the price on these Vitamin Shoppe brand oil-based vitamin D gelcaps. We’ve used the Vitamin Shoppe brand of D in hundreds of patients with consistent and substantial rises in blood levels of 25-OH-vitamin D3. We have witnessed no side-effects. The 1000 and 2000 units capsules help deal with odd doses, e.g., 3000 or 5000 units. Capsules are small and easily swallowed, measuring about 1/4 the size of a standard fish oil capsule.