THE PURSER WELLNESS LIBRARY

Let’s explore B vitamins

A COURSE FOR YOUR CURIOSITYMethylation & B vitamins

4 chapters, at your pace

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New to this subject? Start with this free introduction.Crash Course on MTHFR & Genetic Terminology

62 discoveries for your curiosity

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YouTubeAug 6, 2026

OVER-METHYLATION - Are Your B Vitamins Hurting You?

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Can the B vitamins you are taking to support energy and methylation eventually make you feel worse? In this video, Jackson Larkin explains what practitioners often call “overmethylation,” a possible adverse response to supplemental methyl donors such as: • 5-MTHF or methylfolate • Methylcobalamin • Trimethylglycine, also called TMG • Multiple overlapping methylation formulas Possible warning signs can include irritability, anxiety, restlessness, insomnia, brain fog, fatigue, and feeling “wired but tired.” These symptoms do not prove that you are overmethylated. They can have many possible causes. The timing of symptoms, your total supplement exposure, nutrient status, genetics, medications, and health history all need to be considered. In this video, we discuss: • Why methylation is essential • How methyl-donor supplements support the body • Why the right vitamin can become the wrong dose • Ingredients to look for on your supplement labels • Why some people may need lower doses or non-methylated forms • How genetics and intracellular nutrient testing can guide a more personalized plan At Purser Wellness, we believe in a Start Low, Go Slow approach. The goal is not to eliminate methylation. The goal is to provide the right form and amount of support for each individual. Learn more or schedule with Purser Wellness: https://danpursermd.com Educational content only. Do not discontinue prescribed or medically necessary supplements without consulting your qualified healthcare professional. #Overmethylation #MTHFR #Methylation #B12 #Methylfolate #VitaminB12 #TMG #BrainFog #FunctionalMedicine #PurserWellness Follow Dr. Purser! Info: http://www.DanPurserMD.com Supplements: https://www.PhysicianDesigned.com Books: https://www.amazon.com/-/e/B00BIKSGVQ Facebook: https://www.facebook.com/danpursermd Facebook: https://www.facebook.com/PhysicianDesigned Twitter: https://twitter.com/realdanpursermd YouTube: https://www.youtube.com/danpursermd Instagram: https://www.instagram.com/danpurser.md Pinterest: https://www.pinterest.com/danpursermd

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Health BlogMay 12, 2021

Why do I need methylated B Vitamins?

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Many vitamins and minerals go through the methylation cycle meaning a methyl group is added to a molecule to turn it into its active form. Individuals with MTHFR and other genetic methylation errors are unable to efficiently create the methylated versions of those certain vitamins and minerals. Those with MTHFR specifically cannot make enough 5-MTHF, an activated form of folate, which in turn prohibits the ability to methylate other vitamins. These errors can lead to a number of cellular deficiencies which can cause chronic fatigue, anxiety, depression (BASICALLY MAKE YOU FEEL LIKE A SLUG) and

Health BlogMar 13, 2026

The Hidden Molecule Driving Inflammation: Understanding the Purser Model of Homocysteine

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Most people have never heard of homocysteine, yet this small molecule may hold the key to understanding inflammation, cardiovascular disease, neurological problems, and many chronic conditions. For decades, homocysteine was viewed as a toxic substance in the blood. Doctors were taught that lowering it with B-vitamins might reduce heart disease risk. But research results were inconsistent, leaving many physicians unsure whether homocysteine truly mattered. New research and clinical observations are changing that view. We introduce a new framework called the Purser Model, which explains why homo

YouTubeJan 6, 2026

How To Know If You Have High Homocysteine?

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High homocysteine often shows up first as widespread inflammation—pain all over, poor circulation, or even early warning signs of cardiovascular problems like stroke and heart attack. The best way to know for sure is through testing: a blood test can measure homocysteine directly, while a CMA with Redox uncovers the vitamin deficiencies driving it. For genetic causes, the DRP Genetics panel screens 15–16 of the 17 known SNPs that can cause permanently high homocysteine. If your levels are fixed by genetics, reduced glutathione and targeted B vitamins (like MTHFR Daily) are key to balancing the

YouTubeApr 29, 2026

How to Properly Treat Kids: Root Cause Medicine for Autism, ADHD, and Developmental Challenges

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….com if you want to look me up. Um, I've given a lot of Facebook lives over the years. I've I've had a few that had over a million views. Um, they had over a million people in attendance. This one should be that. It should have two million,…

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YouTubeAug 29, 2026

MTHFR and the Never-Ending Sugar Crash Cycle: Why You’re Tired, Craving Sugar, and Chasing Energy A

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…neverending sugar crash cycle. You may have seen a recent Substack post of ours. Make sure to go follow the personal wellness Substack as well as my own Substack if you want to. I do a couple little articles here and there. But one of our l…

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YouTubeJul 19, 2026

MTHFR & The Never-Ending Sugar Crash Cycle: Why You’re Always Tired & Craving Sweets

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…neverending sugar crash cycle. You may have seen a recent Substack post of ours. Uh make sure to go follow the personal wellness Substack uh as well as my own Substack if you want to. I do a couple little articles here and there. But one of…

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