Author: Team Fireblood

Vitamin D is fat-soluble. Take it on an empty stomach and most of it passes through. Here’s the absorption pathway, the cofactors, and the dose timing that actually moves your bloodwork.

Most ‘third-party tested’ supplements don’t tell you much. Here’s what NSF, Informed Sport, USP, and the COA actually mean.

Most adult men don’t need iron supplements. Iron accumulates, can’t be excreted, raises oxidative stress. Here’s why Fireblood leaves it out.

That anxiety, brain fog, or low mood might not be a brain problem. 90% of your body’s serotonin is produced in your gut. Fix the gut, and your head often follows.

The RDA for vitamin C is 90mg, just enough to prevent scurvy. The research on immune function and collagen starts at 200mg and goes much higher.

Hitting your protein target isn’t the same as getting adequate essential amino acids. Digestion, absorption, and amino acid profiles all determine what your body actually gets.

Folic acid isn’t folate. Cyanocobalamin isn’t the B12 your body uses. The form on your supplement label matters more than the dose.

Most supplements use folic acid. For 40% of people with MTHFR variants, that’s barely working. Here’s why methylfolate is the active form your body actually uses.

Before you reach for melatonin or sleeping pills, check your mineral levels. Three common nutrient deficiencies look exactly like insomnia.

The five choline forms ranked by brain bioavailability and dose, and what Fireblood’s 100mg phosphatidylcholine actually does for you.

You take vitamin D. Great. But D2 or D3? With K2 or without? With food or empty stomach? These details are the difference between wasting money and actually changing your health.

You’ve got 8 different supplement bottles on your shelf. You’re spending $100+ per month. And half of them might be cancelling each other out.