The Coordinated Care Edition

Medications and Nutrients: Make Your Care Plan Work Together

Know what you need. Use tests wisely. Find the right plan.

IFP TeamOctober 7, 202611 min read

Help your medicines work well

The short version: Some medicines can change the amount of a nutrient in your body. Some supplements can also change how a medicine works. The right tests can help guide care, instead of giving everyone the same pills and doses. Medicines and nutrients review NIH: Potassium

Nutrients include vitamins and minerals. A supplement adds a vitamin, mineral, or other ingredient to your diet. Some drugs change how your body takes in nutrients, uses them, or gets rid of them. But taking one of these drugs does not always mean you have too little of a nutrient. Medicines and nutrients review

The goal is to help your care plan work well. Review your medicines, food, and supplements with your care team. Do not stop a needed medicine or add a vitamin for every possible problem. Medicines and nutrients review

Use tests to find what you need

Test for a reason, then choose a dose that fits your needs. A blood test may show that a nutrient is low, or that adding more could be unsafe. B12 and potassium are two examples where tests can help guide care. NIH: Vitamin B12 NIH: Potassium

Two people who take the same drug may not need the same supplement dose. Your test results, symptoms, food choices, and kidney health all matter. So does how well your body takes in the nutrient. NICE: B12 care NIH: Potassium NIH: Magnesium

B12: A blood test is a common first step. If the result is unclear, a second test called MMA may help. Kidney problems can also raise MMA, so your provider must look at more than one number. NIH: Vitamin B12
Potassium: Some drugs lower it. Others can make it rise. Testing can help show whether you need more or should avoid adding it. NIH: Potassium
Magnesium: Some drugs may lower it over time. A blood test can help, but it does not show all the magnesium stored in your body. Your symptoms and health history matter too. NIH: Magnesium

A higher test result is not always better. The goal is to treat a need and watch how you respond. Repeat tests are useful only when they can guide care. For example, B12 care guidelines advise against repeating the first B12 test while a person gets B12 shots. Providers should check symptoms and how treatment is working instead. NICE: B12 care

This does not mean everyone needs a large set of nutrient tests. Most healthy adults do not need routine vitamin D tests unless there is a clear medical reason. Some care plans aimed at preventing problems also do not need a blood test first. Endocrine Society: Vitamin D guidance

Ask your licensed medical provider:

Need: What problem are we trying to treat or prevent?
Dose: Why is this product and amount right for me?
Follow-up: How will we know if it is helping? Would another test help?
Safety: When should we change the dose or stop?

Tests should not delay urgent care. With suspected low B12, it is best to take the blood sample before starting treatment. But if low B12 may have caused both nerve problems and a blood problem called anemia, treatment should not wait for results. Your provider should make that choice. NICE: B12 care

Metformin and vitamin B12

Metformin is a drug used to help control blood sugar. Taking it for a long time can lower how much B12 your body takes in. B12 helps keep nerves and red blood cells healthy. NIH: Vitamin B12

Tell your provider about new numbness, tingling, or tiredness you cannot explain. Do not assume these changes are just part of diabetes or getting older. Ask whether a B12 test could help. NIH: Vitamin B12

If you need B12, pills or shots may be an option. The choice depends on your needs, not just the drug you take. You may be able to keep taking metformin while treating low B12. NICE: B12 care

Do not choose a B12 product just because its label sounds better. NIH reports no proof that the body takes in one chemical form of a B12 supplement better than another. NIH: Vitamin B12

Heartburn medicines, B12, and magnesium

Stomach acid helps free B12 from food. Some heartburn drugs reduce that acid. Two groups are called proton pump inhibitors, or PPIs, and H2 blockers. They can make it harder to take in B12 from food. NIH: Vitamin B12

Long-term PPI use can also lead to low magnesium. Your provider may check magnesium before and during long-term use. The plan should fit your other medicines and health risks. NIH: Magnesium

Ask whether you still need the same medicine and dose. Do not stop it on your own or assume you need a supplement. Medicines and nutrients review

Blood-pressure drugs can act in different ways

Some “water pills,” called loop or thiazide diuretics, make you lose more potassium or magnesium in urine. Other drugs can raise potassium instead. These include spironolactone and groups called ACE inhibitors and ARBs. NIH: Potassium NIH: Magnesium

That is why everyone should not get the same mineral drink or pill. Too much potassium can be unsafe, especially if your kidneys do not work well. Some salt substitutes also contain potassium. Check with your provider before using them. NIH: Potassium

Bring the exact names of your medicines to your visit. Ask which blood tests you need and when to repeat them.

Steroids and bone health

Long-term use of a type of steroid called a glucocorticoid can harm bone health. These drugs can reduce how much calcium your body takes in. They can also change how it uses vitamin D. NIH: Vitamin D

Getting enough calcium and vitamin D matters, but it may not be the whole plan. Ask about your risk of broken bones, a bone-strength test, and whether you need medicine to protect your bones. A short course of steroids and long-term use are not the same. Medicines and nutrients review

Folate needs depend on the medicine

Folate is a B vitamin. Methotrexate changes how the body uses it. The right plan depends on why you take this drug. NIH: Folate

People taking low-dose methotrexate for conditions such as rheumatoid arthritis may be given folate to reduce side effects. During cancer treatment, the cancer care team must guide folate use. Do not use someone else's plan. NIH: Folate

Some seizure drugs and a drug called sulfasalazine can lower folate levels too. But added folate can also affect some medicines. Ask about the right product, dose, and timing before taking it. NIH: Folate

An unlabelled amber glass bottle with yellow tablets on a wooden surface. — Bring the details of each medicine and supplement into the conversation.

What about statins and CoQ10?

Statins are drugs that lower cholesterol. Some people who take them have muscle pain. CoQ10 is a supplement that has been studied to see if it can help. NCCIH: CoQ10

A 2025 review combined seven studies with 389 people. Overall, the CoQ10 groups had less muscle pain than the groups used for comparison. Four studies found a clear benefit. Three did not. 2025 CoQ10 study review

This is hopeful, but it is not a sure answer. The studies were small and lasted only 30 to 90 days. Their results varied a lot, and the overall result changed depending on which studies were included. CoQ10 may help some people, but it is not a must-have for everyone on a statin. 2025 CoQ10 study review

If you have muscle pain, talk with your provider before stopping your statin. Ask whether trying CoQ10 makes sense for you. It can affect warfarin, a blood thinner, and insulin, a diabetes medicine. It may also conflict with some cancer treatments. NCCIH: CoQ10

Hormone medicines can also change some nutrient test results. A change does not always mean you are low or need a long list of supplements. Your food choices and health risks still matter. Medicines and nutrients review

Supplements can affect medicines too

Some minerals can make it harder for your body to take in certain antibiotics and other drugs. Magnesium is one example. You may need to take the drug and supplement at different times. Ask a pharmacist how far apart to take them; the answer depends on the drug. NIH: Magnesium

If you take warfarin, aim for a steady amount of vitamin K in your diet. You do not need to cut out all leafy greens. Tell your care team before a big diet change or adding a vitamin K supplement. NIH: Vitamin K

Bring a complete list

Bring a list of all the products you take. Include drugs, vitamins, herbs, powders, and mineral drinks. Photos of the labels can help your care team spot repeated ingredients.

Bring past lab results with their dates and units. Note which supplements you were taking at the time. Ask which tests could help now and what symptoms you should report.

Your plan should have a clear reason for each supplement and dose. That reason may be a low nutrient level, a known risk, or a plan to prevent a problem. Agree on how to check progress, rather than taking the same stack of pills forever.

Your next step

Bring your questions to a visit with licensed medical providers. Infinity Functional Performance can help you discuss whether a review of your needs makes sense. No specific test, medicine, or result is promised.

Visit ifp.life, call 972-619-5350, or email info@ifp.life to learn about becoming a patient.

This article is for learning, not personal medical advice. Do not start, stop, or change treatment based on a blog. Talk with your care team first.