Ortho Molecular Methyl CpG: Dosage, Uses & Side Effects

Quick answer: Ortho Molecular Methyl CpG is a one-capsule methylation formula from Ortho Molecular Products: 2,000 mcg of folate as Quatrefolic® 5-MTHF, 1,000 mcg of vitamin B12 as methylcobalamin, 50 mg of vitamin B6, 25 mg of riboflavin (B2) and 500 mg of betaine (trimethylglycine). It is built for adults whose practitioner wants nutritional support for methylation and healthy homocysteine levels, including people with MTHFR gene variants. The label dose is 1 capsule a day, so a 60-count bottle lasts two months.

Clinical review pending — Holistic Health Partners

Ruth Ellingsen does not take supplement advice from her sister, on principle. So when the 58-year-old middle-school band director, who still keeps a tuning fork in her coat pocket, got a text that said "Ortho Molecular Methyl CpG, take two every morning," she asked to see the actual bottle first. The label said one capsule a day, sixty capsules, two months. She photographed the Supplement Facts panel and booked a call to ask the better question: whether she needed it at all.

Those are the right questions, in the right sequence: what is in it, how much, and whether it fits you.

Ortho Molecular Methyl CpG is a short, targeted formula. Instead of a full B complex, it carries the five nutrients that work most directly in the methylation cycle, the chemical hand-off of small "methyl" groups that your body uses to recycle homocysteine, make neurotransmitters and maintain DNA. Ortho describes it as a comprehensive formula with targeted amounts of five key nutrients to support methylation and homocysteine balance, and lists its uses as supporting healthy homocysteine levels, neurotransmitter production, primary detoxification pathways and DNA repair.

Methyl CpG - 60 CT

$45.70

Ortho Molecular Products Methyl CPG – Advanced Methylation & Cardiovascular Support Formula (60ct) Ortho Molecular Products Methyl CPG is a comprehensive formula designed to support… Click here to read more

What is in Ortho Molecular Methyl CpG, and what does each ingredient do?

Each capsule holds five active nutrients, and each one has a specific job in the same cycle. Here is what Ortho's Supplement Facts panel lists per capsule, and why each is there.

Ortho's product information sheet also lists 65 mg of calcium per capsule, from the tricalcium phosphate in the other ingredients. The capsule shell is hypromellose (vegetable), and Ortho states the formula contains no gluten, corn, yeast, or artificial colors or flavors.

Why 5-MTHF instead of folic acid?

5-MTHF is the form of folate your cells actually use, so it skips the conversion steps that folic acid has to go through first, including the MTHFR step. In a 24-week randomized, placebo-controlled study of 167 healthy adults, a low dose of L-5-MTHF (113 mcg a day) lowered total homocysteine by 14.6% against placebo, compared with 9.3% for an equal amount of folic acid. The authors concluded that L-5-MTHF was at least as effective as folic acid. That study used a far smaller dose than one capsule of Methyl CpG, and it tested the ingredient, not the finished product.

Why is riboflavin in a methylation formula?

Riboflavin is the raw material for FAD, the cofactor the MTHFR enzyme needs to work. That link shows up in people with the common MTHFR C677T variant. In a study of 423 healthy blood donors aged 19 to 69, plasma riboflavin was an independent predictor of homocysteine: people in the lowest riboflavin quarter had homocysteine 1.4 µmol/L higher than those in the highest, and the relationship was essentially confined to people carrying the C677T variant. This was an observational study, not a supplement trial, so it explains why riboflavin is included rather than proving what 25 mg will do for you.

How much does the betaine add?

Some, but less than the betaine research would suggest at first glance. A 2013 meta-analysis of five randomized trials in healthy adults found that at least 4 g of betaine a day for 6 weeks or more lowered homocysteine by about 1.23 µmol/L. A 2021 systematic review and meta-analysis reached a similar homocysteine result (about 1.3 µmol/L lower) and found that doses of 4 g a day or more also raised total and LDL cholesterol, so the authors favored doses under 4 g. Methyl CpG supplies 500 mg, so think of its betaine as a supporting methyl donor alongside the folate and B12, not the main act.

How do you take Ortho Molecular Methyl CpG?

Take one capsule of Ortho Molecular Methyl CpG a day, or as your health care professional recommends. That is Ortho's label direction; earlier write-ups that suggested two capsules a day were not following the current label.

One practical point: add up the B6 and folate from everything you take. A multivitamin or B complex on top of Methyl CpG can double your B6 and folate without you noticing, which is the most common way people end up well past the label amounts.

How does Ortho Molecular Methyl CpG compare with other methylation formulas?

Methyl CpG is the one-capsule option with the most folate per capsule; the alternatives we carry trade capsule count for different amounts of betaine and B12. Here is how it lines up against two core-brand formulas built around the same nutrients, at each label's own serving.

Thorne lists 3 capsules as one serving of Methyl-Guard Plus, and our product page notes it can be taken at 1 to 3 capsules daily, so a practitioner can scale it down. It uses the activated forms of B2 and B6 (riboflavin 5'-phosphate and pyridoxal 5'-phosphate), which some practitioners prefer.

Methyl-Guard Plus 90c

$62.00

Thorne Methyl Guard Plus – Advanced Methylation Support for Energy, Detox, and Cardiovascular Health Thorne Methyl Guard Plus is a comprehensive methylation support supplement designed… Click here to read more

Pure Encapsulations' Homocysteine Factors carries less folate and no riboflavin, uses activated B6, and is the lowest-priced bottle of the two alternatives. It suits someone who wants a gentler folate amount and does not mind a twice-daily routine.

Homocysteine Factors

$29.00

Homocysteine Factors by Pure Encapsulations – Cardiovascular Health Support Homocysteine Factors by Pure Encapsulations provides targeted homocysteine support with activated B vitamins, folate and betaine.… Click here to read more

60 CT - $29.00 180 CT - $69.00

Ortho Molecular Products, Thorne and Pure Encapsulations each make a well-built formula here. The choice comes down to how much folate and betaine your practitioner wants you on, whether you want riboflavin included, and how many capsules you will actually take.

Who is Methyl CpG for, and who should skip it?

Ortho Molecular Methyl CpG fits adults whose practitioner has a reason to support the methylation cycle. That usually looks like:

• People who know they carry an MTHFR gene variant and want folate already in its active form
• Adults whose homocysteine came back above where their practitioner wants it
• People who eat few leafy greens, legumes or other folate-rich foods
• Vegetarians and older adults, who Ortho notes run the highest risk of low B12
• Anyone who wants these five nutrients in a single daily capsule instead of three or four bottles

Who should skip it or check first

• If you are pregnant or nursing: Ortho's label caution reads, "If you are pregnant or nursing, consult your physician before taking this product." Prenatal folate needs are their own conversation.
• If you take methotrexate: the NIH notes that people taking methotrexate for cancer should talk with their oncologist before taking folate supplements, because folate could interfere with the drug. Thorne's label for its 5-MTHF formula carries a similar warning.
• If you already take a multivitamin or B complex: check the totals first. Doubling up pushes B6 toward its upper limit and folate well past it.
• If your B12 status has not been checked: large amounts of folate can hide some signs of low B12 (see below), so ask your practitioner whether a B12 test belongs on your next lab panel.
• If you take any prescription medication: Ortho lists no specific drug interactions on the label, but your prescriber should still see what you plan to add.

Methyl CpG - 60 CT

$45.70

Ortho Molecular Products Methyl CPG – Advanced Methylation & Cardiovascular Support Formula (60ct) Ortho Molecular Products Methyl CPG is a comprehensive formula designed to support… Click here to read more

What are the side effects of Ortho Molecular Methyl CpG, and is it safe long term?

At one capsule a day most adults tolerate it well, and the safety questions worth asking are about totals, not the single capsule. Ortho does not list side effects on its label. Like any B-vitamin supplement, it can cause mild stomach upset in some people, which a meal usually settles.

Vitamin B6. The NIH Office of Dietary Supplements sets the adult upper limit for B6 at 100 mg a day. The nerve problems linked to B6 in that fact sheet came from 1 to 6 grams a day taken for 12 to 40 months, far above the 50 mg in one capsule. Staying at the label dose, and not stacking another B6 source on top, keeps you well under the limit. Tell your practitioner about any new numbness or tingling.

Folate. The NIH folate fact sheet sets a 1,000 mcg adult upper limit for synthetic folate from supplements and fortified foods, and notes that conversion factors for 5-MTHF have not been formally established, so how that limit applies to 5-MTHF is not settled. The same fact sheet explains the main concern with large folate intakes: they can correct some blood signs of low B12 while the nerve effects continue, which can delay the diagnosis. The 1,000 mcg of B12 in the capsule helps, but it does not replace a B12 test if your practitioner suspects a problem. This is one reason a high-folate formula is best used with a practitioner's guidance.

"Overmethylation." You will see this word online to describe irritability, headaches or feeling wired after starting a methyl formula. It is not a formal diagnosis and there is little research on it, but if you notice those changes, stop and check in with your practitioner rather than adjusting the dose yourself.

Why is Methyl CpG available only through our clinic?

Ortho Molecular Products sells its formulas only through licensed health care professionals. Our partner clinic, Holistic Health Partners, is how Covenant Health Products customers get access to Ortho Molecular Methyl CpG. You can book a free appointment, or join the clinic and save 20%, and a member of the clinical team will look at what you already take before adding anything new. For a formula with this much folate, that review is worth having anyway.

Is Ortho Molecular Methyl CpG worth asking about?

If your practitioner wants you on active folate, methyl B12, B6, riboflavin and betaine, Methyl CpG covers all five in one capsule a day, and a bottle lasts two months. The ingredient research supports what each nutrient does in the methylation cycle, though the studies tested the nutrients, not this product, and the betaine dose is modest. It is the wrong fit if you already take a high-folate multivitamin, if you have not had your B12 checked, or if you would rather start with a lower-folate formula like Homocysteine Factors. A short conversation with the clinic is the fastest way to find out which side of that line you are on.

Results vary, and supplements aren't cures, but the right guidance and high-quality products can make a meaningful difference in how you feel and function.

Keep reading

• Thorne Methyl Guard Plus: Benefits, Side Effects & How It Works
• Xymogen Methyl Protect: Benefits, Side Effects & What It Does
• Methyl B Complex by Ortho Molecular

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.