IF YOUR SUPPLEMENTS HELPED FOR 2 WEEKS THEN STOPPED WORKING, THIS IS PROBABLY WHY.

Research and education, not medical advice.

After the last two posts blew up I’ve had so many people in my DMs asking me to write more about specific patterns I see with my clients. So I’m going to start sharing more of these. This one is the single most common thing I see when someone comes to me after trying methylation supplements on their own

Someone starts methylfolate or B12, feels amazing for 10-14 days, then it fades. Two months in they feel worse than when they started. They switch brands, change forms, eventually quit.

It’s not the supplement. It’s cofactor depletion.

Methylation isn’t one enzyme running on folate and B12. It’s a network that burns through cofactors fast when you push it. Those first two weeks of feeling great is your body using up whatever reserves it had. Then the bottleneck hits.

B2 (riboflavin) is the biggest one. MTHFR enzyme literally cannot function without it. Most people supplement folate and B12 without B2 and their MTHFR runs out of what it needs to do its job.

Magnesium is next. COMT clears the catecholamines methylation produces, and COMT is magnesium-dependent. Magnesium drops, COMT slows, catecholamines build up. That’s the anxiety and insomnia people blame on the methylfolate.

Molybdenum is the one nobody mentions. It’s the cofactor for sulfite oxidase, which handles sulfur byproducts from CBS. Methylation can push CBS, sulfite accumulates, and you get fatigue and brain fog that looks like a methylation crash but is actually a sulfite problem.

B6 (P5P) runs the pathway that clears homocysteine. Without it, homocysteine creeps back up no matter how much folate you take.

Zinc is COMT’s other cofactor. Low zinc plus high catecholamines is the same picture as low magnesium.

What works is loading cofactors before pushing donors. B2 25mg, magnesium glycinate 400mg, molybdenum 150mcg, P5P 10mg, zinc 15mg, for 2-3 weeks before starting or restarting folate and B12. Then bring the methyl donors in low, with cofactors continuing.

The other reason supplements stop working is your protocol isn’t matched to your variants. MTHFR alone doesn’t tell you which form to use, what dose, or whether CBS is driving the crash. COMT, MAO-A, CBS, MTRR, BHMT all change the answer.

Happy to answer questions! If you want your full variant picture read properly so you actually know what your body needs, that’s what I do.

PS: DM me if I miss your comment

Archived into the Nootopics wiki from r/NooTopics — originally posted by u/Loose-Fly7976 on 2026-05-25. Curated, not authored by the community.