Ultra Vitamin D 4000IU

I'm 58 and my doctor mentioned my levels were low, so these 4000IU tablets are perfect since I only need one a day instead of choking down several smaller pills. The tablets are small enough to swallow easily with my morning coffee.

The 4000IU dose is convenient since I don't have to take multiple pills, but the tablets are on the large side and a bit chalky to swallow. Been taking them a few weeks, no real change yet, though I know vitamin D takes time to build up.