Skip to main content
Free shipping on all orders
888-559-3802

Designs for Health Homocysteine Supreme Guide

Explore Designs for Health Homocysteine Supreme — a synergistic blend of methylated B vitamins, TMG, and L-serine for healthy homocysteine metabolism and methylation.

Overview

What Is Designs for Health Homocysteine Supreme?

Designs for Health Homocysteine Supreme is a modified methylated B complex formulated with synergistic nutrients known to facilitate the efficient metabolism of homocysteine. The formula includes folate in its bioidentical, bioactive form — (6S)-5-methyltetrahydrofolate — along with methylcobalamin, pyridoxal-5-phosphate, riboflavin-5-phosphate, trimethylglycine (TMG), and L-serine.

Homocysteine is an amino acid produced during methionine metabolism. When the homocysteine pathway functions optimally, it supports the normal production of important end products, including the sulfur-containing amino acids taurine and cysteine and the neurotransmitters norepinephrine and dopamine.

An optimally functioning homocysteine pathway provides methyl and sulfur groups for critical biochemical reactions, such as detoxification, healthy immune function, ideal joint and cartilage structure, and brain and cardiovascular health.*

Why It Matters

The Importance of Healthy Homocysteine Metabolism and Methylation

Methylation is a network of interrelated biochemical reactions that occurs in every cell of the body. It is vital for DNA synthesis, neurotransmitter production, detoxification, immune regulation, and energy production. Homocysteine sits at a central crossroads in the methylation cycle — it can be remethylated back to methionine (supporting SAMe production) or directed through the transsulfuration pathway to produce cysteine and glutathione.

Research suggests that genetic polymorphisms in the MTHFR enzyme — which affect an estimated 25–40% of the population — can reduce the body's ability to convert folic acid into its active form, 5-methyltetrahydrofolate. This may compromise methylation efficiency and lead to elevated homocysteine levels. Designs for Health Homocysteine Supreme addresses this concern by supplying pre-formed, bioactive nutrient cofactors that do not require enzymatic conversion by MTHFR.

By supporting both the remethylation and transsulfuration arms of homocysteine metabolism, this formula promotes a balanced homocysteine pathway and the downstream production of neurotransmitters, sulfur amino acids, and methyl groups essential for overall health.*

What's inside

Key Ingredients

Folate (as Quatrefolic [6S]-5-methyltetrahydrofolate, glucosamine salt) — 3,400 mcg
Quatrefolic is the bioidentical, bioactive form of folate — (6S)-5-methyltetrahydrofolate — which directly participates in the remethylation of homocysteine to methionine without requiring conversion by the MTHFR enzyme. This makes it particularly important for individuals carrying MTHFR polymorphisms who cannot efficiently convert folic acid to its active form. Clinical studies strongly support its role in lowering plasma homocysteine, and randomized controlled trials demonstrate significant homocysteine reduction with 5-MTHF supplementation. Beyond methylation, 5-MTHF is the biologically active folate form that directly regenerates S-adenosylmethionine (SAMe), the universal methyl donor required for serotonin, dopamine, and norepinephrine synthesis. Clinical RCTs demonstrate that adjunctive 15 mg/day L-methylfolate may significantly support mood in treatment-resistant depression, highlighting its role in neurotransmitter balance.*
Vitamin B-12 (as Methylcobalamin [MecobalActive]) — 1,000 mcg
Methylcobalamin is the metabolically active coenzyme form of Vitamin B12 and serves as an essential cofactor for methionine synthase — the enzyme that remethylates homocysteine to methionine using 5-methyltetrahydrofolate. Research indicates that B12 deficiency directly elevates homocysteine, and supplementation with at least 0.4 mg B12 daily may lower homocysteine by approximately 7% as a standalone effect, with greater reductions observed in combination with folate and B6. Vitamin B12 is also essential for the one-carbon cycle that generates SAMe for neurotransmitter synthesis. B12 deficiency is associated with neurological symptoms including depression and cognitive impairment through impaired SAMe-dependent methylation of neurotransmitters. Supplementation in deficient individuals reliably supports neurotransmitter synthesis capacity.*
Trimethylglycine (TMG) — 900 mg
Trimethylglycine is the primary non-B-vitamin methyl donor for homocysteine remethylation via the betaine-homocysteine methyltransferase (BHMT) enzyme in the liver — a pathway that operates independently of folate and B12. A meta-analysis of randomized controlled trials confirms that TMG reliably lowers plasma homocysteine at supplemental doses of 4–6 g/day in healthy adults. TMG is FDA-approved (as Cystadane) for the treatment of genetic homocystinuria, underscoring its well-characterized role in homocysteine metabolism. By donating a methyl group to homocysteine, TMG supports methionine and SAMe production. SAMe is the obligate methyl donor for synthesis of serotonin, dopamine, and norepinephrine in the brain, so by supporting SAMe availability, TMG indirectly sustains neurotransmitter synthesis and mood-related neurochemistry.*
Vitamin B-6 (as pyridoxal-5-phosphate) — 10 mg
Pyridoxal-5-phosphate (P5P) is the biologically active coenzyme form of Vitamin B6 — ready for immediate use without conversion. P5P is the cofactor for cystathionine beta-synthase (CBS), the enzyme that initiates the transsulfuration pathway, converting homocysteine to cystathionine and then to cysteine. While B6 alone does not reliably lower fasting homocysteine, it is critical for post-methionine-load homocysteine clearance and acts synergistically with folate and B12. P5P is also the essential coenzyme for decarboxylation reactions producing serotonin (from 5-HTP), dopamine (from L-DOPA), and GABA (from glutamate). Without adequate PLP, all three neurotransmitter pathways are impaired. Deficiency has been associated with depression and anxiety. P5P is recognized as a critical neurotransmitter synthesis cofactor in the biochemistry literature.*
Riboflavin (as riboflavin-5-phosphate) — 30 mg
Riboflavin-5-phosphate (Flavin mononucleotide, or FMN) is the active phosphorylated coenzyme form of vitamin B2. FMN and its derivative FAD are obligate cofactors for methylenetetrahydrofolate reductase (MTHFR), the enzyme that converts homocysteine to methionine. Research suggests that riboflavin supplementation may lower homocysteine specifically in individuals homozygous for the MTHFR 677C→T polymorphism, a genotype-specific effect driven by the mutant enzyme's lower affinity for its flavin cofactor. By stabilizing MTHFR activity in 677TT carriers, riboflavin-5-phosphate supports methylation flux and efficient one-carbon metabolism.*
L-serine — 100 mg
L-serine is a conditionally essential amino acid that serves as the principal endogenous donor of one-carbon units to the folate cycle via the serine hydroxymethyltransferase reaction. Human isotope tracer studies confirm that serine contributes approximately 100% of the one-carbon units for total body homocysteine remethylation under fasting conditions. L-serine also participates directly in homocysteine catabolism through the transsulfuration pathway. In the nervous system, L-serine is the obligate precursor to D-serine — an endogenous NMDA-receptor co-agonist — and to glycine, both of which critically regulate glutamatergic and glycinergic neurotransmission. L-serine also participates in the biosynthetic pathway for tryptophan, the precursor to serotonin.*
Homocysteine Supreme™
Designs For Health
Homocysteine Supreme™
  • ✓ Free shipping over $75
  • ✓ 90-day easy returns
  • ✓ Ships within hours
Homocysteine Supreme™
$57.49
Who Benefits

Who Is Designs for Health Homocysteine Supreme For?

Designs for Health Homocysteine Supreme may be well suited for individuals looking to support healthy homocysteine metabolism, methylation, and neurotransmitter balance.* This includes:

  • Individuals with MTHFR polymorphisms — The formula provides pre-converted, bioactive forms of folate (Quatrefolic) and B12 (methylcobalamin) that bypass the need for MTHFR enzymatic conversion, along with riboflavin-5-phosphate, which research suggests may help stabilize MTHFR enzyme activity in 677TT carriers.*
  • Those seeking cardiovascular and brain health support — An optimally functioning homocysteine pathway plays a role in biochemical reactions important for cardiovascular health and brain health.*
  • People interested in neurotransmitter support — Multiple ingredients in this formula — including P5P, methylfolate, methylcobalamin, TMG, and L-serine — contribute to the production of serotonin, dopamine, norepinephrine, and GABA through established biochemical pathways.*
  • Anyone wanting comprehensive methylation support — The combination of methylated B vitamins, TMG, and L-serine provides methyl and sulfur groups for detoxification reactions, immune function, and joint and cartilage structure.*

This product is vegetarian-friendly and made without soy, gluten, or GMOs.

Usage

How to Take Homocysteine Supreme™

Take 2 capsules per day with meals or as directed by your health-care practitioner.

Each bottle contains 120 capsules, providing a 60-day supply at the recommended serving size of 2 capsules.

About the author

Written by Greg Howlett

GH

Greg Howlett

Founder

Greg has spent over a decade helping customers choose the right natural-health products. He personally vets every formula we carry and writes these guides to cut through the marketing noise with practical, experience-based advice.

FAQ

Frequently asked questions

What makes Designs for Health Homocysteine Supreme different from a standard B-complex?

Homocysteine Supreme™ is specifically formulated for homocysteine metabolism and methylation support. It provides bioactive, methylated forms of key B vitamins — including (6S)-5-methyltetrahydrofolate (Quatrefolic), methylcobalamin (MecobalActive), pyridoxal-5-phosphate, and riboflavin-5-phosphate — alongside TMG and L-serine. These nutrients work synergistically to maintain a healthy homocysteine pathway and support the normal production of important end products including taurine, cysteine, norepinephrine, and dopamine.*

Why does the formula include TMG (trimethylglycine)?

TMG serves as a direct methyl donor for the remethylation of homocysteine via the BHMT enzyme in the liver — a pathway that operates independently of folate and B12. This provides an alternative route for homocysteine metabolism, supporting normal methylation even when folate-dependent pathways may be compromised. TMG is FDA-approved (as Cystadane) for the treatment of genetic homocystinuria, underscoring its well-characterized role in homocysteine metabolism.*

Is this formula suitable for people with MTHFR gene variants?

Yes. Homocysteine Supreme™ contains folate as Quatrefolic (6S)-5-methyltetrahydrofolate, which is already in its bioactive form and does not require conversion by the MTHFR enzyme. Research suggests this form is particularly important for individuals with MTHFR polymorphisms who cannot efficiently convert folic acid. The formula also includes riboflavin-5-phosphate, which studies suggest may help stabilize MTHFR activity in 677TT carriers.*

How does Homocysteine Supreme™ support neurotransmitter balance?

Multiple ingredients in the formula contribute to neurotransmitter production. Pyridoxal-5-phosphate (P5P) is the essential coenzyme for producing serotonin, dopamine, and GABA. Methylfolate regenerates SAMe — the universal methyl donor required for serotonin, dopamine, and norepinephrine synthesis. Methylcobalamin and TMG further support SAMe availability through the methionine cycle, while L-serine is the precursor to D-serine and glycine, both of which regulate glutamatergic neurotransmission.*

Is Designs for Health Homocysteine Supreme vegetarian?

Yes. Homocysteine Supreme™ is vegetarian-friendly and is made without soy, gluten, or GMOs.

What is the recommended serving size and how long does one bottle last?

The recommended serving is 2 capsules per day, taken with meals or as directed by your health-care practitioner. Each bottle contains 120 capsules, providing a 60-day supply.

Talk to an expert

Talk to Dr. Shannyn Fowl

Not sure if this is right for you? Book a free, no-pressure consultation for personalized guidance on your health goals.

Book your free consult
Who we are

About Vitabase

A family-run reseller of premium supplements — free shipping, a 90-day guarantee, and real people who know the products.

Learn more about us