Calcifediol (25-OH Vitamin D)
Solid evidence for bone health. Not a miracle worker, but genuinely useful for the right person.
Verdict
7/10 Solid
Evidence
Grade B / 100+ Studies
The No-BS Summary
8 things. 60 seconds. Everything you need.
WHAT IT DOES
Pre-activated D. Skips the liver. Faster results.
DOES IT WORK?
7/10 Solid. Good pick. The form your liver makes from D3. Bypasses liver conversion. Raises blood levels faster. Prescription in some countries.
HOW MUCH TO TAKE
20-30mcg daily
COST
Premium. $50-80/month. Make sure the evidence backs the spend.
FIRST 24 HOURS
Don't expect miracles on day one. It's building in your system.
AFTER A FEW WEEKS
Most people notice something by week 2-3.
SAFETY
One heads-up: potent_monitor_levels. Otherwise, you're good.
HOW IT FEELS
Faster response than D3. Same end result.
QUICK ANSWERS
+ 4 more questions
DOSE-RESPONSE CURVE
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