Methyl 12 Plus is a once-daily vegetarian capsule that its maker, D’Adamo Personalized Nutrition, markets as an activated vitamin B formula to support healthy metabolic function and energy production. The product page says Dr. Peter D’Adamo designed it to promote natural energy levels, optimize methylation and help regulate sleep patterns. As of October 29, 2026, the Methyl 12 Plus sales page lists it at $24.95 for a 60-capsule bottle, with subscription options that the page says save 15%. The seller’s returns page says full refunds are given only for unopened, undamaged products, and returns must be authorized by D’Adamo Personalized Nutrition within 30 days of receipt of shipment, using a return authorization number. The formula combines two active forms of vitamin B12, methylcobalamin and adenosylcobalamin, with folate, and a recent review in the journal Cureus reported that methylcobalamin may be more effective than standard vitamin B12 supplements. This Methyl 12 Plus review covers the label, price, refund steps, side effects, buyer feedback and how to buy from the seller directly.
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| What it is | Activated vitamin B formula in 60 vegetarian capsules (SKU NP008), one capsule a day |
| Who sells it | D’Adamo Personalized Nutrition, through 4yourtype.com |
| Price as shown | $24.95 for one 60-capsule bottle; subscription options listed (see the price section for the date shown) |
| Returns | Full refunds are given only for unopened, undamaged products, and returns must be authorized by D’Adamo Personalized Nutrition within 30 days of receipt of shipment, using a return authorization number. Shipping fees are not refunded. |
| How to contact the seller | Call 877.226.8973 (listed in the site header); Customer Service handles order problems by email, live chat or phone |
| Product Page | Where to Buy |
What is Methyl 12 Plus, and who sells it?
Methyl 12 Plus is a dietary supplement sold as 60 vegetarian capsules. The product page calls it an activated vitamin B formula and files it under Foundational Formulas and Mental Clarity and Focus on the seller’s site. The seller is D’Adamo Personalized Nutrition, which sells the product on its own website, 4yourtype.com. The page says the product is produced in the USA and is a Good Manufacturing Practices product certified by the Natural Products Association with an “A” compliance rating. Those are the seller’s statements.
Search results for “methyl B12 review” often cover a different product. Methyl-B12 by Jarrow is a separate supplement whose main active ingredient is methylcobalamin. Reviews of that product do not describe Methyl 12 Plus.
Methyl 12 Plus ingredients: what the label shows
The seller names the active forms of vitamin B but does not publish the amounts in the sales page text.
| Ingredient or specification | Amount per capsule | What the seller says |
|---|---|---|
| Vitamin B12 as methylcobalamin | Not published | One of two “biologically ‘active’ forms” of B12 in the formula |
| Vitamin B12 as adenosylcobalamin | Not published | The second active form of B12 |
| Vitamin B9 as folate | Not published | “The biologically active form of vitamin B9 (folate)”; the seller says it contains no synthetic folic acid |
| Capsule count | 60 vegetarian capsules | Suggested use is one capsule per day “or as directed by your physician” |
| Other ingredients | Not published | The seller says it contains no sugar, salt, gluten, wheat, yeast, corn, soy, eggs, dairy, preservatives, color, flavors or artificial ingredients |
| Blood types | Not applicable | Described as suitable for all blood types and “Usable by all types: Yes” |
Ask the seller for the full label before you order, so you know exactly what each capsule contains.
What is the difference between activated methyl B12 and vitamin B12?
Vitamin B12 comes in several forms. Cyanocobalamin is the synthetic form the product page calls “the cheaper form of vitamin B12 … seen in many supplements.” Methylcobalamin is the form one B12 review calls the most active form in the body and one that is easily absorbed. The body converts cyanocobalamin into methylcobalamin, and that review notes that some research suggests cyanocobalamin is better absorbed at high doses, though there is considerable dispute about which form is better.
The word “activated” in the name refers to the seller’s phrase “biologically ‘active’ forms.” Dr. D’Adamo, quoted on the product page, says studies suggest 60 to 70 percent of the general population has at least one gene variant that makes it hard to process cyanocobalamin.
How does Methyl 12 Plus work, according to its maker?
The seller says the formula is designed to promote and maintain natural energy levels, optimize the body’s methylation capabilities and help regulate sleep patterns. The product page describes methylation as a chemical process in which methyl groups attach to DNA and help turn genes on or off. It says methylation plays a role in energy production inside cells, fat metabolism, healthy nervous system function and DNA production.
What does the research on these ingredients show?
The research that applies here is on vitamin B12 in general, not on this capsule. A recent review published in the journal Cureus compared natural and synthetic forms of B12 and how they affect absorption and health outcomes. Its summary reports that methylcobalamin may be more effective than standard vitamin B12 supplements. The same summary describes B12 as vital for DNA synthesis, energy metabolism and neurological function.
Reviews of B12 supplements in general say that people with normal B12 levels may not notice much from extra B12, and that B12 is not a stimulant. A realistic expectation is a steady daily nutrient habit rather than a quick change.
What is vitamin B12 good for, and what are the signs of low B12?
The Cureus review summary says a B12 deficiency can cause megaloblastic anemia, neuropathy, cognitive disorders and pregnancy complications. Its listed symptoms include numbness or tingling in the extremities, weight loss, visual disturbances and mood changes. A B12 review lists more common signs:
- Pale skin or mild jaundice
- Fatigue
- A chronic “pins and needles” feeling in the hands and feet
- Difficulty balancing or walking
- Mouth sores or a swollen tongue
- Dizziness, shortness of breath, blurry vision or depression
That review adds that these symptoms can be vague. People with chronic digestive diseases such as Crohn’s or celiac disease, and people who have had weight-loss surgery or digestive tract procedures, are at higher risk of B12 deficiency. If you notice any of these signs, ask a clinician about checking your B12 level.
What happens if you take B12 every day?
The seller directs one capsule a day. A B12 review says bad reactions to vitamin B12 are rare, and that there is considerable debate about the long-term benefits of very high daily doses. Another review says the National Institutes of Health lists a recommended intake of 2.4 micrograms a day for people 14 and older.
Pros and cons of Methyl 12 Plus
Pros, as the seller describes them
- Vegetarian capsule that the seller describes as free of gluten, wheat, dairy, soy, eggs and other listed ingredients
- Two active B12 forms plus folate, with no synthetic folic acid, per the seller
- One capsule a day, with 60 capsules per bottle
- A subscription option, with cancellation through the account page at any time
- Free ground shipping in the continental U.S. on orders above $69
- Full refunds are given only for unopened, undamaged products, and returns must be authorized by D’Adamo Personalized Nutrition within 30 days of receipt of shipment, using a return authorization number
Cons and limits
- Opened products are not eligible for a refund
- Returns need a return authorization number and go unprocessed without one
- Customers pay return shipping unless the error was the seller’s
- The seller’s subscription discount is stated two ways (see the price section)
- The page does not present the product for memory or focus
Who is Methyl 12 Plus for, and who should skip it?
The seller presents Methyl 12 Plus for people who want a vegetarian B vitamin formula with active B12 forms and folate, and it says the product is suitable for all blood types.
People who already get enough B12 may not notice a difference from extra B12. A 2024 review of Methyl-B12, a methylcobalamin product, advises pregnant and breastfeeding women to consult their doctors before taking it.
Ask a clinician first if you are pregnant or breastfeeding, have a medical condition, have digestive disease or digestive surgery, or take any medicine. The seller’s own directions say to take the product “as directed by your physician.”
Side effects, safety and who should ask a clinician first
The Methyl 12 Plus sales page does not list side effects. The reports below come from reviews of other B12 products that use the same main form of vitamin B12.
| Possible effect | Where it is listed | Note |
|---|---|---|
| Mild diarrhea, itching, skin rash, headache, dizziness, nausea, vomiting | A 2024 review of Methyl-B12 | Common effects listed for a methylcobalamin product |
| Very rare serious allergic reaction: swelling of the face, tongue or throat, and trouble swallowing or breathing | The same 2024 review | The review says to stop use and seek immediate medical attention for severe or worsening effects |
| Mild stomach upset, nausea, headache or changes in urine color | A review of a different B12 tablet | Described as occurring in some users |
A B12 review also says bad reactions to vitamin B12 are rare. If a side effect bothers you, stop and talk with your clinician.
How do you take Methyl 12 Plus?
The product page says the suggested use is one capsule per day, “or as directed by your physician,” as a dietary supplement. The seller’s FAQ says that when a product’s directions do not say whether to take capsules with meals, they can be taken with or away from meals.
What do customers say about Methyl 12 Plus?
The Methyl 12 Plus sales page calls the formula “one of our most popular, highly rated formulas,” which is the seller’s claim. The success stories on the site’s blood-type pages are about the diet, not this capsule.
Reviews of Methyl-B12 by Jarrow, a different product, describe mixed customer feedback. A 2026 review by Diets in Review says past customers wrote about breakouts and feelings of irritability, and it says side effect reports were far more than would be expected from a pure B12 supplement. That feedback is about the other product.
How much does Methyl 12 Plus cost, and what does shipping add?
Prices and offers change, so check today’s price and the subscription discount at checkout with the seller.
| Option | Price | What it means |
|---|---|---|
| One-time purchase, 60 capsules | $24.95 | One bottle; at one capsule a day, about a 60-day supply, or about $0.42 a capsule |
| Subscribe, ship every 30 days | Save 15% per the product page | At 15% off $24.95, about $21.21 a bottle |
| Subscribe, ship every 60 days | Save 15% per the product page | Same discount, shipped every 60 days |
- Subscription discount: the product page says 15%, but the subscriptions FAQ says subscribers save 10% on supplements. Confirm which applies at checkout.
- Free shipping: the header says free ground shipping on U.S. orders above $69, and the shipping page says $69 or more. The offer covers the continental U.S., and the shipping method is at the seller’s discretion.
- Alaska, Hawaii, Puerto Rico and other islands: free shipping applies on orders of $200 or more, and other orders need an extra 2 or 3 days.
- Delivery: orders usually ship within 24 hours, excluding weekends and holidays, and arrive in about 1 to 5 business days.
A subscription renews every 30 or 60 days. The subscriptions FAQ says you can skip a shipment, change the payment method, or change or cancel the subscription at any time from your account page, with no fees or penalties.
How do refunds, returns and cancelling work?
The seller’s return and refund policy covers unopened, undamaged products only. Opened products are not eligible for any type of refund. Returns can only be processed for items bought directly from the D’Adamo Personalized Nutrition website or through its Customer Service. The steps are below.
- Cancel before it ships. The returns page says the seller will try to accommodate cancellation requests before packing or shipping. Once an order is placed, changes cannot be made.
- Get a return authorization number. Contact Customer Service by email, live chat or phone, and get a return authorization number (RMA) before you send anything. Returns without an RMA will not be processed or considered for a refund.
- Full refunds are given only for unopened, undamaged products, and returns must be authorized by D’Adamo Personalized Nutrition within 30 days of receipt of shipment, using a return authorization number. Write the RMA number clearly on the outside of the box.
- Pay return shipping. Customers are responsible for return shipping except when the seller made an error.
- Receive your refund. After receipt and inspection, the refund is credited to your original method of payment within 7 business days. Shipping fees are nonrefundable.
The seller’s terms are a return and refund policy, not a separate money-back guarantee period. When you are ready to order, use the Product Page below so the purchase is made directly with the seller.
Is Methyl 12 Plus legit, or is it a scam?
You can check most of this yourself before you buy. The table lists what the seller’s pages say.
| What to check | What the seller’s pages say |
|---|---|
| Seller | D’Adamo Personalized Nutrition; the FAQ describes its products as dietary supplements regulated by FDA as such |
| Website | 4yourtype.com; the returns page only covers purchases made directly from this site or through Customer Service |
| Phone | 877.226.8973, listed in the site header |
| Questions from outside the U.S. | customerservice@4yourtype.com and +1 203.761.0042, listed in the FAQ for that purpose |
| Lost or damaged packages | The seller says it is not responsible for a package once the carrier has it, and asks you to call Customer Service to file a claim |
| Quality claims | GMP, a Natural Products Association “A” compliance rating and U.S. production, all as the seller states them |
| Refund route | Refunds go back to the original method of payment |
The seller’s FAQ says that under FDA rules, vitamin products are regulated as dietary supplements and that its supplements are produced according to Good Manufacturing Practice.
What is not verified here is the amount of each ingredient, the 60 to 70 percent gene variant figure, and any study of the finished capsule. To protect yourself, buy only through 4yourtype.com or by calling Customer Service. A listing from any other seller falls outside the returns policy above. Save your order confirmation and any RMA details, and check the label when it arrives against the amounts you requested. The Product Page is the place to order once you have these checks done.
How does Methyl 12 Plus compare with other B12 options and doing nothing?
| Option | What it is | Details from the pages |
|---|---|---|
| Methyl 12 Plus | Two active B12 forms plus folate, 60 vegetarian capsules | $24.95 for one bottle; amounts not published |
| Jarrow Methylcobalamin 5,000 mcg lozenges, 60 count | A methylcobalamin lozenge that can be chewed or dissolved | Named as a best-value pick in a BestReviews guide |
| MegaFood Methyl B12 tablet | B12, folate and B6 in one daily tablet | $30.99 for 90 tablets, and the review says the brand has no refund policy |
| Diet alone | Getting B12 from foods | A B12 review says most people get enough through their diets |
| Daily habits | Sleep, exercise, nutrition and stress management | Cleveland Clinic lists these as habits that can help memory |
If you already eat B12-rich foods and feel well, a capsule may add little. A clinician can check your B12 level and help you compare options.
What helps with poor memory, brain fog and lack of focus?
The site files it under Mental Clarity and Focus, but the description talks about energy, methylation, sleep patterns and nervous system support.
Harvard Health says normal aging brings gradual changes to thinking and memory, and that research shows memory loss can begin as early as age 45. Its guide to four ways to improve focus and memory suggests listening closely, paraphrasing, choosing quieter settings and doing one thing at a time. For a wider list, read natural ways to improve memory, and for the difference between normal forgetting and fog, see Memory and Brain Fog.
Stanford’s guidance on working memory suggests reducing mental load with reminders and chunking information into smaller groups, and it says to aim for 7 to 10 hours of sleep per night. How to improve your memory, from Cleveland Clinic, says habits that support quality sleep, regular exercise, balanced nutrition and stress management can all help. It also says that if memory problems interfere with daily life, such as forgetting bills or getting lost in familiar places, you should talk with a healthcare provider. If you are looking at supplements for focus, see focus and attention supplements.
Before you order
- Check whether the subscription discount is 15% or 10% at checkout.
- Check the shipping charge for orders under $69 at checkout.
- Ask a clinician first if you are pregnant, breastfeeding, have a digestive condition or take medicine.
- Buy only through 4yourtype.com or Customer Service, and keep your order confirmation.
- Get an RMA before you return anything, and do not open the bottle if you may return it.
Quick answers to other questions
Does Methyl 12 Plus contain folic acid?
No, according to the seller. It says the formula uses folate and contains no synthetic folic acid.
Is Methyl 12 Plus vegan or gluten-free?
The sales page says it is 100% vegetarian and contains no gluten or wheat. It does not use the word vegan.
Is Methyl 12 Plus FDA approved?
The seller’s FAQ says the FDA regulates vitamin products as dietary supplements, and that the supplements are produced under Good Manufacturing Practice.
Can B12 be used to treat myasthenia gravis?
The Methyl 12 Plus sales page does not present the product for any disease. Ask your clinician about any medical condition before you start a supplement.
Is methylcobalamin hard on the kidneys?
This page does not address kidney effects. Ask your clinician before starting any supplement, especially if you have kidney disease.
How do I check my B12 levels at home?
Ask a clinician about testing your B12 level. The symptom list above is a starting point only.
What do you crave when your B12 is low, and which organ is most affected?
This page does not cover cravings or organ effects. Bring those questions to your clinician.
What are the 7 signs of memory loss, and which vitamin is best for memory?
Methyl 12 Plus is not presented as a memory vitamin. For memory changes that affect daily life, talk with a healthcare provider, as Cleveland Clinic advises.
What is the #1 brain supplement, and what two supplements should never be taken together?
This page does not rank supplements.
By the Global MH Summit Research Team
This article is for general information purposes only and does not constitute medical advice. Consult your doctor or qualified healthcare provider before making changes to your health routine.