Drug & supplement interaction

Dimethylglycine (dmg) + Carvedilol

Carvedilol brand names: Coreg, Coreg CR.

No Known Interaction
The bottom line No known interaction

We found no known interaction between Dimethylglycine (dmg) and Carvedilol in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the label for Carvedilol states a food rule worth keeping to.

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Interaction report

Dimethylglycine (dmg) and Carvedilol

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Carvedilol and Dimethylglycine (dmg) in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

Worth understanding: our licensed dataset holds no drug-interaction record for Dimethylglycine (dmg) at all — not against Carvedilol, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Dimethylglycine (dmg) safety at a glance

Dimethylglycine (d... overall Use caution Appears generally well tolerated short-term, but high-quality long-term safety data are limited.
Pregnancy Avoid Not enough safety information; best to avoid during pregnancy.
Breastfeeding Avoid No reliable safety data, so avoid while breastfeeding.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Carvedilol and Dimethylglycine (dmg)? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Carvedilol’s Own FDA Label Lists

This is not an interaction — none of it involves Dimethylglycine (dmg). These are the most notable effects listed in the ADVERSE REACTIONS section of Carvedilol’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 10 of them are worth acting on rather than waiting out — marked below.

  • A stroke or mini-stroke Worth acting on
  • Memory problems Worth acting on
  • High potassium Worth acting on
  • Low sodium Worth acting on
  • Low blood sugar Worth acting on
  • Low potassium Worth acting on
  • A slow heartbeat Worth acting on
  • A heart attack Worth acting on
  • Heart failure Worth acting on
  • High blood sugar Worth acting on

Showing the 10 most notable of 58 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Carvedilol. Read the label on DailyMed › Dimethylglycine (dmg)’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Dimethylglycine (dmg) side to compare — that is a limit of the record, not a statement that Dimethylglycine (dmg) has no side effects.

How to take them

Some Carvedilol Products Have a Food Rule — Dimethylglycine (dmg) Should Not Break It

At least one FDA label for a product containing Carvedilol says to take it with food. If you take Dimethylglycine (dmg) on an empty stomach out of habit, keep them separate — and take Carvedilol with a meal where the label says to.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Carvedilol products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

2 DOSAGE AND ADMINISTRATION COREG should be taken with food to slow the rate of absorption and reduce the incidence of orthostatic effects.

From the Dosage and Administration section of the FDA label we read for Carvedilol — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

From our Q&A

Questions About Dimethylglycine (dmg) or Carvedilol

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Dimethylglycine (dmg) or Carvedilol, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Carvedilol

This page covers Dimethylglycine (dmg) only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Carvedilol page lists 211 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), American Mistletoe (major), Grapefruit (major) and Indian Snakeroot (major).

By severity: 6 major · 171 moderate · 34 minor.

From our pharmacist’s overview on the Carvedilol page

“People take carvedilol (Coreg) for heart failure and high blood pressure, conditions where a sudden swing in pressure or heart rate matters, and its supplement list runs to 211 ingredients, so this one calls for genuine care. More than half of those entries lower blood pressure on their own, fish oil and celery seed among them, and can…”

Reviewed by 2 · Jul 18, 2026

Open the Carvedilol interaction page

How much people look this up

Where Dimethylglycine (dmg) and Carvedilol Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Dimethylglycine (dmg)
Steady interest

#1,405 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Carvedilol
Top 25%

#334 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions. Dimethylglycine (dmg) is not yet covered by that licensed database, so its write-up cites publicly available medical sources directly (see the references below).
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Dimethylglycine (dmg) reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Dimethylglycine (dmg) and Carvedilol records this page draws on were last updated June 22, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Dimethylglycine (dmg)

What is Dimethylglycine (dmg)?

  • Athletic performance and energy
  • Autism spectrum support
  • Immune support
  • Seizure disorders
  • General wellness and detox support

Dimethylglycine (DMG) is a substance made naturally in the body and found in small amounts in foods. It is marketed for energy, athletic performance, autism, and immune support, but solid human evidence for most of these uses is limited. It appears generally well tolerated in short-term use, but talk with your pharmacist or doctor before trying it.

Not applicable (a naturally occurring amino acid derivative) · Tablets, capsules, chewable tablets, sublingual tablets, powder

An interaction check asks whether these two react with each other — it does not ask whether Dimethylglycine (dmg) is a good idea for someone in your situation. Here is what our Dimethylglycine (dmg) record says about it on its own.

Dimethylglycine (dmg): dosing

There is no officially established or standardized dose of DMG. Products vary widely in strength and in the directions they give.The safest approach is to follow the dosing instructions on the product label and not exceed them. If you do not notice a clear benefit, there is no reason to keep taking it.

From our Dimethylglycine (dmg) monograph — the full record covers uses, side effects and every documented interaction.

Read the full Dimethylglycine (dmg) monograph & all interactions
Medication

About Carvedilol

What Is Carvedilol Used For?

Brand names: Coreg, Coreg CR

Carvedilol is used to treat three main conditions: mild-to-severe chronic heart failure, high blood pressure (hypertension), and reduced heart pumping function (left ventricular dysfunction) in people who have survived a heart attack. For heart failure, it is usually prescribed alongside other medications such as diuretics, ACE inhibitors, and digitalis to help people live longer and reduce the chance of hospital stays.

For people who have had a heart attack and whose heart is not pumping as well as it should, carvedilol is used to lower the risk of dying from heart-related causes. For high blood pressure, it can be used on its own or combined with other blood pressure medicines.

Most-Reported Side Effects for Carvedilol

From FAERS, the FDA’s public side-effect reporting system (0 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Fatigue 9,141 reports
Dyspnea 8,542 reports
Diarrhea 7,250 reports
Dizziness 7,211 reports
Nausea 6,830 reports
See full Carvedilol drug information
Keep checking

Other Drugs & Dimethylglycine (dmg)

Browse every other medication we’ve checked against Dimethylglycine (dmg) — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
0Moderate
0Minor
2,829No known interaction
No interaction 2,829 drugs checked — show the list
Evidence & sources

Dimethylglycine (dmg) References

The 2 sources that drive our Dimethylglycine (dmg) monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Dimethylglycine (dmg) is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.

  1. Dietary Supplements: What You Need to Know — NIH Office of Dietary Supplements Source
  2. Using Dietary Supplements Wisely — NIH NCCIH Source

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Dimethylglycine (dmg) and Carvedilol Together: Common Questions

Is it safe to take Dimethylglycine (dmg) with Carvedilol?
We do not list a known interaction between Dimethylglycine (dmg) and Carvedilol. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Should I take Dimethylglycine (dmg) and Carvedilol at the same time of day?
At least one FDA label for a product containing Carvedilol says to take it with food. If you take Dimethylglycine (dmg) on an empty stomach out of habit, keep them separate and take Carvedilol with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Carvedilol products can differ — so check the directions on your own box. This is about absorption, not an interaction.
Does Carvedilol interact with any supplements?
Yes. Carvedilol has documented interactions with 211 supplements in our database — Dimethylglycine (dmg) is not one of them. The Carvedilol interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Still Have a Question About Carvedilol and Dimethylglycine (dmg)?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.