The sunshine molecule most people are missing. Runs everything from mood to muscle strength to immune defense.
Verdict
10/10 Proven
Evidence
Grade A / 600+ Studies
8 things. 60 seconds. Everything you need.
WHAT IT DOES
The sun in a pill.
DOES IT WORK?
10/10 Proven. This one actually works. Critical for immunity and bone health.
HOW MUCH TO TAKE
1000-5000 IU
COST
Budget-friendly. $20-35/month for quality brands.
FIRST 24 HOURS
Don't expect miracles on day one. It's building in your system.
AFTER A FEW WEEKS
Give it 4-8 weeks for full effects. Patience pays.
SAFETY
One heads-up: hypercalcemia.. Otherwise, you're good.
HOW IT FEELS
General well-being.
+ 4 more questions
How effective is creatine monohydrate at different doses? Here's what the research shows.