Methylated B12, folate and B6 — when the active forms matter
Why methylcobalamin, L-5-MTHF-Ca and P5P instead of cyanocobalamin, folic acid and plain B6. Active forms, homocysteine, and the MTHFR story plainly told.
Most multis use cyanocobalamin for B12, folic acid for folate, and plain pyridoxine for B6. The bottle here uses methylcobalamin (525 mcg), L-5-MTHF-Ca (400 mcg DFE), and P5P (26 mg).
Whether that switch matters depends on your chemistry — but the story is worth understanding before you pick a label.
Active vs inactive — what it means
- B12: methylcobalamin is the body's active transfer form.
- Folate: L-5-MTHF-Ca is the circulating form your cells actually use.
- B6: P5P (pyridoxal 5′-phosphate) is the phosphate your enzymes reach for.
Inactive forms ask your body to do the conversion. For many people that conversion goes fine. For some, it does not — and when appetite is down for weeks, the cost of a slow conversion shows up as "I am doing everything right and still wiped."
The homocysteine angle
B12, folate and B6 sit on the homocysteine pathway. When any of them is low or poorly converted, homocysteine drifts high. Bringing the active forms together at modest doses — not mega-doses — is how a daily habit helps the pathway without turning a capsule into a dare.
The MTHFR footnote, plainly
Some people carry common variants in the MTHFR pathway that make folic acid → methylfolate less efficient. For them, L-5-MTHF bypasses the step that can be slow. That does not mean everyone needs it; it means for the slice that does, folic acid can be a roundabout route.
We chose active forms so the folate line is not a gamble on your conversion.
How it sits in Keel
- Methylcobalamin 525 mcg, L-5-MTHF 400 mcg DFE, P5P 26 mg.
- Zinc biotin/B6/D3 frame the same pathway from nearby.
- And we still print every milligram, so you and your clinician can check the math.
See the whole label: Keel
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
FAQ
Should I keep my old B complex too? Probably not — add the totals. Two B complexes at once can put folate and B12 well above the useful range.
Is methylated always better? For people who convert well, plain forms work. Active forms are a deliberate hedge so the people who convert slowly are not left waiting on their own chemistry.
Any interaction to watch? High folate can hide a B12 deficiency signal on labs. Tell your clinician what you take, especially if appetite has been low.
Eating less on a GLP-1? The nutrient gaps that show up first
Appetite drops, portions shrink, and the multivitamin you took with breakfast may no longer cut it. Which vitamins people run low on during GLP-1 use, why absorption shifts, and what a single daily habit can sensibly cover.
Read itNMN vs NR and the 500 mg question
The NAD precursor people actually mean when they say longevity supplement. How NMN relates to NR and NAD+, what 99.9% purity implies, and why we chose 500 mg in one capsule.
Read it