I started at 2k, saw it didn't do much, eventually went through 4k all the way to 8k, where I was close to acceptable maximum, so I cut it to 4k and then had a few blood tests spread over a year and the results remained almost in the middle of the range.

How did you evaluate the different tests? Vit D doesn’t have any acute subjective effects

Not sure what you meant with evaluating them. I checked what results came up and adjusted dosage accordingly. Can't speak for side effects, but I feel subjectively better than back when I had deficiency.

Ah, cool. So you relied on repeated blood tests until you found the right dose. Thanks