Don’t blindly shotgun Vitamin D. Dial it in with the free Dminder app

https://www.insider.com/signs-symptoms-too-much-vitamin-d-cramps-nausea-2022-5

It’s not impossible to over do Vitamin D, but it’s far more common to under do it. 80ng/ml is near the top of the range on the blood test- and where I like to keep mine. The dminder app is derived from a database of blood tests and will guide you in dialing in your dosage to get to 80ng/ml. Likely 10000 iu daily, not 50000 daily for weeks on end.