[wholien]

Highly doubt 5k IUs is the issue. Some select quotes from "Vitamin D Is Not as Toxic as Was Once Thought: A Historical and an Up-to-Date Perspective" by Michael Holick in Mayo Clinic Proceedings [0]:

> Ekwaru et al recently reported on more than 17,000 healthy adult volunteers participating in a preventative health program and taking varying doses of vitamin D up to 20,000 IU/d. These patients did not demonstrate any toxicity, and the blood level of 25(OH)D in those taking even 20,000 IU/d was less than 100 ng/mL.

> The evidence is clear that vitamin D toxicity is one of the rarest medical conditions and is typically due to intentional or inadvertent intake of extremely high doses of vitamin D (usually in the range of >50,000-100,000 IU/d for months to years).

[0]: Holick, https://www.mayoclinicproceedings.org/article/S0025-6196(15)...

[1]: Ekwaru et al, https://pubmed.ncbi.nlm.nih.gov/25372709/

[TameAntelope]

[0] is an editorial and [1] seemingly went unpublished, other than in PLOS One, which means it goes through a very different peer review process than most other journals (that is, no peer review on its content, only on its methodology).