> After ingestion, cholecalciferol is first converted to calcidiol in the liver, which can take several hours. Then, calcidiol is further converted to calcitriol, the active form, in the kidneys, which may take additional time.
read as if you're perfectly healthy, at minimum it's 24 hours. What you're talking about is probably placebo effect. For reserves to start building up to the point where your body has "enough" calcitriol, it takes weeks
* Is_Energetic = CalcitrolLevel > 90% of CalcitrolReserveCapacity
For most people, it will take days, weeks, or even months to come above 90%. But for those who have dipped just below 90%, such as to 89%, if they're optimally healthy in other ways, they will see a rapid rise in energy by high dose D3. If it's not this, then there is something else going on physiologically to explain the subjective effect.
read as if you're perfectly healthy, at minimum it's 24 hours. What you're talking about is probably placebo effect. For reserves to start building up to the point where your body has "enough" calcitriol, it takes weeks