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Should You Get a B12 Test Before Taking NeuroRecall or Any Memory Pill?

Written by the Neuro Recall editorial team · Last updated · 7 min read · Medical review below

Quick answerA shortage of vitamin B12 can bring on confusion and forgetfulness, and one routine blood draw can spot it. Ask for that test before you start a memory supplement. Folic acid, which many memory products contain, can hide the signs of low B12. Neuro Recall has 240 mcg of B12 and 320 mcg of folic acid, so testing first gives your doctor a clear starting point.

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Neuro Recall Supplement Facts panel: 2 capsules, 30 servings, folate, B12, magnesium, chromium and a 635 mg WMG-NVT blend
Why test

Why ask for a B12 test before memory supplements?

Memory changes have many causes. A few of them are easy to find and to treat. Low vitamin B12 is one. The NIH Office of Dietary Supplements says a B12 deficiency can cause confusion and memory problems, along with tiredness and nerve symptoms (NIH ODS, Vitamin B12).

A blood test can show whether B12 is low. If it is, the doctor can treat it directly, and you will know the cause. If it is normal, you can rule one thing out. Either way, you learn more from a test than from a bottle.

  • 2.4 mcgB12 adults need each day
  • 240 mcgB12 in one serving of Neuro Recall
  • 10,000%of the Daily Value on the label
Risk groups

Who is most likely to be low on vitamin B12?

Anyone can run low, but some people are at higher risk. NIH lists the groups below (NIH ODS, Vitamin B12). If you or your parent fits one, mention it when you ask for the test.

Groups more likely to run low on B12

  • Older adults, who may make less of the stomach acid needed to absorb B12 from food
  • People with pernicious anemia, an immune condition that blocks B12 absorption
  • People who had weight-loss surgery or other stomach or bowel surgery
  • People with celiac disease or Crohn's disease
  • Vegans and some vegetarians, since B12 comes mainly from animal foods
  • People who take metformin for diabetes
  • People who take acid reducers for heartburn for a long time
Symptoms

Six kinds of signs that can point to low B12

Low B12 can come on slowly. Early signs are easy to blame on age, stress or poor sleep. That is why a test is more reliable than guessing from symptoms.

Energy

Tiredness and weakness that do not improve with rest.

Blood

Pale skin or shortness of breath from anemia.

Nerves

Numbness or tingling in the hands and feet, or balance trouble.

Mood

Low mood or irritability that feels new.

Thinking

Confusion, slower thinking or memory trouble.

Mouth and appetite

A sore tongue, poor appetite or weight loss.

Folate masking

Folic acid and the masking problem

Folate and B12 work together to make healthy red blood cells. When B12 is low, one early sign is a type of anemia. Folic acid can correct that anemia, so the blood count looks better. But the B12 problem is still there, and nerve damage can keep going (NIH ODS, Folate).

That is what people mean when they say folic acid can mask a B12 deficiency. NIH sets the adult upper limit for folic acid from supplements and fortified foods at 1,000 mcg a day, in part for this reason (NIH ODS, Folate).

How this applies to Neuro Recall

Neuro Recall gives 320 mcg of folic acid per serving, listed as 600 mcg DFE. That is under the upper limit by itself. But if you also take a multivitamin or eat fortified cereal, add those up. And get the B12 test first, so folic acid does not blur the picture.

Our label reading guide shows how to find folic acid and B12 on any Supplement Facts panel and add them across products.

Ask

How do you ask your doctor for a B12 test?

You do not need special words. Doctors order B12 tests often. A clear reason and a list of risk factors make the request easy to say yes to.

Sometimes the first result is borderline. In that case the doctor may order a follow-up test that looks at B12 in another way. That is normal and helps avoid a wrong answer.

Results

What do B12 test results usually mean?

Only your doctor can read your result in context. The table gives a plain idea of what different results often lead to. It is not a guide to self-treatment.

General guidance based on the NIH vitamin B12 and folate fact sheets. Your doctor sets the plan.
ResultWhat it may meanLikely next step
LowYour body may not have enough B12Your doctor finds the cause and treats it, often with shots or high-dose pills
BorderlineNot clearly low or normalA follow-up test, or a recheck after a set time
NormalB12 is not the likely cause of the changeLook at other causes; extra B12 is not shown to help memory
HighOften from supplements or shotsTell your doctor what you take; they will decide if it matters
Neuro Recall

Where does Neuro Recall fit after the test?

Neuro Recall lists vitamin B12 at 240 mcg per serving, 100 times the adult need. It also has folate, magnesium, chromium and a 635 mg blend of ten herbs and nutrients. The full panel is on our Supplement Facts page.

For someone with low B12, the doctor may choose a specific treatment instead of a mixed product. For someone with normal B12, the extra B12 is not shown to help memory (NIH ODS, Vitamin B12). Either way, the test comes first.

Honest note

Beyond B12 and folate, the evidence for the rest of Neuro Recall is modest. The largest ginkgo study found no fall in dementia, and the bacopa share tops out near half the research amount. Our ingredients page covers each item. Memory loss that disrupts daily life needs a doctor visit, whatever the test shows (Alzheimer's Association, 10 warning signs).

Caregivers

How can a B12 test help when you care for a parent?

If you are helping a parent, the B12 question is a good way to open the door to a checkup. It is specific, it is not scary and it may have a simple answer. Some parents may find a blood test easier to agree to than a memory visit.

Write the result on the parent's medication list, with the date. Our caregiver guide shows a simple layout. For everyday steps that support brain health, see our post on brain health habits after 50.

FAQ

B12 testing questions from families

Could a B12 shortage explain Mom's forgetfulness?

It can be one cause. The NIH Office of Dietary Supplements says B12 deficiency can cause confusion and memory problems. Only a test and a doctor can say whether it applies.

Which body signs can point to low B12?

Common signs include tiredness, weakness, pale skin, numbness or tingling in the hands and feet, balance problems, low mood, confusion and memory trouble. Some people have few signs at first.

How do I ask my doctor for a B12 test?

Say you have noticed memory or energy changes and ask whether a vitamin B12 blood test makes sense. Mention any risk factors, such as taking metformin or acid reducers.

Who is most likely to be low in vitamin B12?

NIH lists older adults, people with pernicious anemia, people who had stomach or bowel surgery, people with celiac or Crohn's disease, and vegans or some vegetarians. Some medicines also lower absorption.

Does metformin lower B12?

It can. NIH lists metformin among the medicines that may reduce B12 absorption. Ask your doctor whether you need regular checks.

Why does folic acid make a B12 test more important?

Yes. NIH says high folic acid intake can mask the anemia of B12 deficiency, while nerve damage may keep going. That is why testing B12 matters.

Will taking B12 improve my memory?

It helps if you are low. NIH says more research is needed on B12 for memory in people who already get enough.

Should I stop supplements before a B12 blood test?

Ask the doctor who orders the test. Tell them about any B12 or multivitamin you take, since supplements can change the result.

Is the B12 in Neuro Recall too much?

Each serving gives 240 mcg, which is 100 times the 2.4 mcg adults need. NIH has not set an upper limit for B12, but ask your doctor if you take other B12 products.

Does Neuro Recall contain vitamin B12 and folic acid?

Yes. The label lists 240 mcg of vitamin B12 and 320 mcg of folic acid. Because folic acid can hide the signs of low B12, it makes sense to ask your doctor about a blood test before you start.

Is a B12 blood test needed before taking Neuro Recall?

It is a sensible step to ask your doctor about. One short blood draw can show a low B12 level, which can cause forgetfulness on its own. Knowing your result first helps you and your doctor decide what comes next.

Test first. Then decide.

Once you know your B12 level, talk with your doctor about whether Neuro Recall fits. Read the full label and check the price and refund terms on the checkout.

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