Medication interaction hub

What Supplements Interact with Magnesium Hydroxide (OTC drug)?

Magnesium Hydroxide (OTC drug) brand name: Milk of Magnesia (MOM). Every interaction below applies to the brands too.

46 Interactions 3 Major 34 Moderate 9 Minor
Curated & coded by · Clinical Pharmacist · Updated September 18, 2026

Drug–supplement interaction data sourced from Natural Medicines Pro, the licensed clinical database from TRC Healthcare / Therapeutic Research, with additional analysis by the HelloPharmacist Pharmacist Team. Our sources · Editorial policy

What is this page for?

One answer, for one medication: what supplements and herbal products interact with Magnesium Hydroxide (OTC drug)? Every vitamin, herb, and supplement ingredient we’ve checked against it is on this page, ranked by severity, each linking to the full report for that exact pair.

This page covers supplement interactions only — to check Magnesium Hydroxide (OTC drug) against your other medications, use the drug–drug interaction checker. Educational information from our licensed clinical databases, not medical advice. Our editorial policy

HelloPharmacist Bottom Line
Our Pharmacist Explains
What is this? The interaction data in the HelloPharmacist supplement database is licensed from Natural Medicines Pro by TRC Healthcare (Therapeutic Research). HelloPharmacist pharmacists often add our own analysis and context on top of that licensed data — such as this Bottom Line summary and the notes on individual interaction pages — and any such commentary is noted as ours.

Milk of magnesia (magnesium hydroxide) is the medicine-cabinet fix for constipation, and most of the 46 supplements known to interact with it come from the same shelf. Twenty-nine are herbal stimulant laxatives, aloe latex and cascara sagrada among them, and doubling up on laxatives can drain fluid and potassium fast. That combination deserves genuine caution here, because two of the three major-rated entries, jalap and oleander, belong to this group, and potassium loss makes oleander's heart-active compounds more dangerous.

The third major is activated charcoal, which binds medicines in the gut before they can absorb. It anchors a second group of 17 ingredients, including bulking fibers like guar gum and glucomannan, that can blunt the absorption of oral drugs, so swallow those well apart from any medication. The remaining 34 moderate and 9 minor entries mostly repeat these two patterns in milder form, but if you already rely on a laxative, adding an herbal one is where the real trouble starts.

— , Clinical Pharmacist · July 18, 2026

Major 3 Moderate 34 Minor 9 No known interaction 1,406

This box checks one ingredient at a time (like turmeric or magnesium). Taking a supplement product with a whole label of ingredients? Search the product instead — we check every ingredient on it ↓

Top Ingredient Interactions

Magnesium Hydroxide (OTC drug): Top Interactions at a Glance

The most significant Magnesium Hydroxide (OTC drug) supplement & herbal interactions, colored by severity. Tap any ingredient to open the full report for that pair.

Showing the 12 highest-ranked of 46 interacting ingredients — plus 1,406 more checked with no known interaction. See the complete ranked list.

Start here

The Major Interactions to Know About

The most clinically significant Magnesium Hydroxide (OTC drug) + supplement combinations in our database, best-documented first. Open any card for the full report.

Major Likelihood Probable Activated Charcoal + Magnesium Hydroxide (OTC drug)i

Activated charcoal reduces systemic exposure to many drugs, including those that undergo enterohepatic recirculation, regardless of the route of administration.

Read the full interaction Major Likelihood Probable Jalap + Magnesium Hydroxide (OTC drug)i

Jalap has stimulant laxative effects.

Read the full interaction Major Likelihood Probable Oleander + Magnesium Hydroxide (OTC drug)i

Theoretically, stimulant laxatives may increase the risk of oleander toxicity.

Read the full interaction
The complete list

Every Supplement Checked Against Magnesium Hydroxide (OTC drug)

All 1,452 ingredients in our database, ranked by severity — 46 with a Magnesium Hydroxide (OTC drug) interaction on file and 1,406 with none found. Filter by severity or search any ingredient; hover the for what each ingredient is.

Looking for an interaction with a specific supplement product? Search products instead ↓

Straight answers

Can You Take It With Magnesium Hydroxide (OTC drug)?

One-line answers, one card per combination — scroll through today’s 20 and tap any card for the full report. A different set rotates in daily until every combination has had its turn.

Can you take Oleander with Magnesium Hydroxide (OTC drug)?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Theoretically, stimulant laxatives may increase the risk of oleander toxicity.

Full Oleander + Magnesium Hydroxide (OTC drug) answer

Can you take Coffee Charcoal with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Coffee charcoal can reduce the absorption of orally administered drugs and should be separated from oral drug administration by at least two...

Full Coffee Charcoal + Magnesium Hydroxide (OTC drug) answer

Can you take European Mandrake with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, concurrent use might increase absorption of some drugs because of inhibited gastrointestinal (GI) motility caused by European...

Full European Mandrake + Magnesium Hydroxide (OTC drug) answer

Can you take Glucomannan with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, glucomannan may decrease absorption of drugs taken orally.

Full Glucomannan + Magnesium Hydroxide (OTC drug) answer

Can you take Alder Buckthorn with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Alder buckthorn has stimulant laxative effects.

Full Alder Buckthorn + Magnesium Hydroxide (OTC drug) answer

Can you take Aloe with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, aloe latex might increase the risk for fluid and electrolyte loss when taken with stimulant laxatives.

Full Aloe + Magnesium Hydroxide (OTC drug) answer

Can you take Black Hellebore with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, overuse or misuse of stimulant laxatives can increase the risk of cardiac glycoside toxicity due to potassium depletion.

Full Black Hellebore + Magnesium Hydroxide (OTC drug) answer

Can you take Butternut with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Butternut has stimulant laxative effects.

Full Butternut + Magnesium Hydroxide (OTC drug) answer

Can you take Calotropis with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, concomitant use with calotropis may increase risk of cardiac glycoside toxicity due to potassium loss.

Full Calotropis + Magnesium Hydroxide (OTC drug) answer

Can you take Cascara Sagrada with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, cascara sagrada might have additive adverse effects when taken with stimulant laxatives.

Full Cascara Sagrada + Magnesium Hydroxide (OTC drug) answer

Can you take Colocynth with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, colocynth might increase the risk for fluid and electrolyte loss when taken with stimulant laxatives.

Full Colocynth + Magnesium Hydroxide (OTC drug) answer

Can you take European Buckthorn with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. European buckthorn has stimulant laxative effects.

Full European Buckthorn + Magnesium Hydroxide (OTC drug) answer

Can you take Fo-ti with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, fo-ti, particularly raw fo-ti root, might increase the risk of fluid and electrolyte depletion when taken with stimulant laxa...

Full Fo-ti + Magnesium Hydroxide (OTC drug) answer

Can you take Foxglove with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, overuse of stimulant laxatives increases the risk of cardiac glycoside toxicity.

Full Foxglove + Magnesium Hydroxide (OTC drug) answer

Can you take Gamboge with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Concomitant use of gamboge with stimulant laxatives may increase the risk of fluid and electrolyte loss.

Full Gamboge + Magnesium Hydroxide (OTC drug) answer

Can you take Gardenia with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, gardenia might increase the effects and adverse effects of stimulant laxatives.

Full Gardenia + Magnesium Hydroxide (OTC drug) answer

Can you take Gossypol with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, gossypol might increase the risk of additive potassium depletion and hypokalemia when taken with stimulant laxatives.

Full Gossypol + Magnesium Hydroxide (OTC drug) answer

Can you take Guar Gum with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Guar gum might reduce the absorption of some oral drugs, potentially decreasing their effectiveness.

Full Guar Gum + Magnesium Hydroxide (OTC drug) answer

Can you take Gum Arabic with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, gum arabic can alter the absorption of oral drugs due to its fiber content.

Full Gum Arabic + Magnesium Hydroxide (OTC drug) answer

Can you take Hedge Mustard with Magnesium Hydroxide (OTC drug)?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking hedge mustard with stimulant laxatives might increase the risk of cardiac glycoside toxicity.

Full Hedge Mustard + Magnesium Hydroxide (OTC drug) answer
Read the list like a pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

  • Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
  • Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
  • Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
  • No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

  • Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
  • Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
  • Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

  • Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
  • Each entry links to a full report with the clinical detail, likelihood, evidence level, and citations for that exact combination.
  • Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

How Does Our Interaction Checker Work?

Behind every verdict on this page is a category system. Our source database doesn’t document supplement interactions drug-by-drug — it documents them against groups of medications that behave the same way (for example, “drugs processed by the CYP3A4 liver enzyme” or “blood-thinning medications”).

So the check works in three steps: (1) Magnesium Hydroxide (OTC drug) is classified into the pharmacology categories it belongs to, (2) every supplement interaction documented against any of those categories is inherited by Magnesium Hydroxide (OTC drug), and (3) each ingredient keeps its own severity, likelihood, and evidence grades from the underlying record. That’s why one supplement can carry several records for one drug — it may interact through more than one category.

Magnesium Hydroxide (OTC drug) sits in 2 interaction categories. Open any one to see what the group means:

Stimulant Laxatives 29 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

29 of the supplement ingredients on this page reach Magnesium Hydroxide (OTC drug) through this category.

Oral Drugs 17 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

17 of the supplement ingredients on this page reach Magnesium Hydroxide (OTC drug) through this category.

Related: does Magnesium Hydroxide (OTC drug) deplete any nutrients?

Magnesium Hydroxide (OTC drug) has 3 reported nutrient associations in the research literature — see the Magnesium Hydroxide (OTC drug) nutrient depletion report.

Check a real product

Take a Supplement Product? Check the Whole Bottle Against Magnesium Hydroxide (OTC drug)

Most supplements are combination products — and the interaction may come from an ingredient you didn’t buy it for. Search any product below (or scan its label) and we’ll check every ingredient on it against Magnesium Hydroxide (OTC drug).

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Products that contain Magnesium Hydroxide (OTC drug)-interacting ingredients

Real supplements from the NIH label database that contain the top interacting ingredients on this page — each one is worth a full label check before combining with Magnesium Hydroxide (OTC drug).

Nutra-BBS by NutraMedix contains Jalap Enula by NutraMedix contains Jalap Enula by NutraMedix contains Jalap Enula by NutraMedix contains Jalap
Pharmacist Counseling Corner

Magnesium Hydroxide (OTC drug) & Supplements: Common Questions

What supplements interact with Magnesium Hydroxide (OTC drug)?
More than you might expect — 46 in total, though they are far from equal: 3 are rated major, 34 moderate, and 9 minor. The ranked list on this page puts the ones that genuinely matter first, and every entry opens a full report on that exact pair. The highest-ranked right now: Activated Charcoal, Jalap, Oleander.
Which Magnesium Hydroxide (OTC drug) supplement interactions are the most serious?
Focus on the major group: Activated Charcoal, Jalap and Oleander. A major rating means the combination can be clinically significant, not that harm is guaranteed — but it's exactly the kind of thing to run past your pharmacist before your next dose, not after. Jump to the ranked list.
Can I take vitamins or supplements while on Magnesium Hydroxide (OTC drug)?
Usually yes — most people on Magnesium Hydroxide (OTC drug) can take most supplements. The catch is the exceptions, and they aren't always the exotic ones (St. John's Wort trips up more prescriptions than almost anything sold next to it). Look up each ingredient you actually take in the list above, and treat "no known interaction" as a green-ish light, not a guarantee. Try the label scanner or the interaction checker.
Do brands like Milk of Magnesia (MOM) have the same supplement interactions as Magnesium Hydroxide (OTC drug)?
Yes — Milk of Magnesia (MOM) all contain Magnesium Hydroxide (OTC drug), so everything on this page applies to them equally. Interactions belong to the active drug, never to the brand on the box; the same is true of generics.
Where do these interaction ratings come from?
Every rating comes from the Natural Medicines database — the same evidence-graded reference pharmacists and hospitals use — and each interaction carries three separate grades: severity (how bad it can be), likelihood (how well it's documented in studies and case reports), and an evidence level. Our pharmacists review the content; we never let an AI decide an interaction. See how to read the ratings and our editorial policy.
Does Magnesium Hydroxide (OTC drug) deplete any vitamins or nutrients?
It might — Magnesium Hydroxide (OTC drug) has 3 reported nutrient-depletion associations in the research literature, which is a different question from interactions: instead of a supplement changing the drug, the drug may lower a nutrient over time. See the Magnesium Hydroxide (OTC drug) nutrient depletion report for the specifics and what to discuss with your pharmacist.
What about Magnesium Hydroxide (OTC drug) and my other medications?
This page covers Magnesium Hydroxide (OTC drug) against supplements and herbal ingredients. Checking Magnesium Hydroxide (OTC drug) against your other prescription or OTC medications is a different tool — our drug interaction checker covers that side. Head to the drug–drug interaction checker.

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

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Where This Data Comes From — and Why You Can Trust It

🧪 Licensed clinical database

Every interaction verdict on this page comes from Natural Medicines Pro (TRC Healthcare / Therapeutic Research) — the same evidence-graded reference used by pharmacists and hospitals. We license this data directly; we do not scrape it, and no AI invents an interaction.

🧑‍⚕️ Pharmacist review

This page is curated and coded by , Clinical Pharmacist, with additional analysis by the HelloPharmacist Pharmacist Team. Editorial commentary is ours; the licensed interaction records are shown as sourced.

🔄 Kept current

Our interaction database refreshes on a weekly cycle, and this page re-checks the live database every time it’s rebuilt — what you see reflects the database as of September 18, 2026.

🔍 Full transparency

How every dataset on this site is sourced, licensed, and updated is documented publicly: our data sources · editorial policy · how we use AI.

Educational information, not medical advice. An interaction being on file does not mean it will happen to you — and absence of one is not proof of safety. Never start or stop a medication or supplement without talking to your pharmacist or doctor.