Vitamin D3: Optimal Levels vs Toxicity

TropicStrength · Post by **TropicStrength** » Tue Jan 27, 2026 2:30 am

I'm at 85 ng/mL. Is there any benefit to going higher, or do I risk hypercalcemia?

AndeanLifter · Post by **AndeanLifter** » Tue Jan 27, 2026 3:15 am

85 is the sweet spot. Anything over 100 doesn't show much extra benefit and could be problematic.

MedellinMuscle · Post by **MedellinMuscle** » Tue Jan 27, 2026 4:00 am

Are you taking Vitamin K2 with it? K2 is vital for directing that calcium into bones and away from arteries.

CaliFlex · Post by **CaliFlex** » Tue Jan 27, 2026 4:50 am

I take 10,000 IU and I'm only at 50 ng/mL. Some people are just poor absorbers.

LatinoBulk · Post by **LatinoBulk** » Tue Jan 27, 2026 5:35 am

Take it with your fattiest meal. Vitamin D is fat-soluble. No fat = no absorption.

TropicStrength · Post by **TropicStrength** » Tue Jan 27, 2026 6:20 am

I use the oil-based drops. Seems to work much better than the dry tablets.

AndeanLifter · Post by **AndeanLifter** » Tue Jan 27, 2026 7:05 am

Magnesium is also required for the activation of Vitamin D in the liver and kidneys.

MedellinMuscle · Post by **MedellinMuscle** » Tue Jan 27, 2026 7:40 am

Low magnesium = ineffective Vitamin D. It's a whole cascade.

CaliFlex · Post by **CaliFlex** » Tue Jan 27, 2026 8:20 am

I'll add Magnesium Glycinate to my stack then.

TropicStrength · Post by **TropicStrength** » Tue Jan 27, 2026 8:55 am

Good call. Most lifters are deficient in Mag anyway.