CreaGyn Ingredients & Drug Interactions
by Purus Labs
What is this page for?
First and foremost: checking CreaGyn against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
CreaGyn is a dietary supplement by Purus Labs with 3 active ingredients. Its ingredients are commonly taken for preventing or treating magnesium deficiency, constipation, muscle cramps.Based on those ingredients, 295 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Magnesium. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against CreaGyn by Purus Labs
Ask about any prescription or over-the-counter medication and we check it for interactions with CreaGyn by Purus Labs — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of CreaGyn by Purus Labs
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
CreaGyn contains two active ingredients: magnesium and MagnaPower. Magnesium is a mineral your body needs for muscle function, nerve signaling, and protein synthesis.
The inactive ingredients are silica, natural flavor, calcium silicate, and citric acid — these are fillers, binders, and flavoring agents. We hold no information on MagnaPower's properties, so we cannot describe its role.
Does it work?
Leans against
Magnesium is effective for indigestion, constipation, low blood magnesium levels (hypomagnesemia), and preventing or treating pre-eclampsia in pregnancy. The facts we have do not include effectiveness data for MagnaPower, so we cannot tell you what it is meant to do or how well it works.
How safe is it?
Well-documented data
Magnesium is generally well tolerated at recommended doses. The most common side effects are gastrointestinal — diarrhea, nausea, vomiting, and stomach irritation are typical.
In rare cases, high-dose oral magnesium can cause serious effects like muscle weakness or a blockage in the digestive tract. Magnesium is needed in pregnancy, but supplements should only be used under your doctor's guidance.
For breastfeeding, dietary amounts are fine, but check with your doctor before taking supplements. We have no safety data for MagnaPower on file.
Meds to double-check
Major interaction found
Before taking CreaGyn, double-check with your doctor or pharmacist if you take levodopa/carbidopa (a Major interaction), or if you use skeletal muscle relaxants, calcium channel blockers, sulfonylureas, potassium-sparing diuretics, quinolone antibiotics, bisphosphonates, or acid reducers — magnesium can affect all of these.
The bottom line
Scorecard at a glanceFully disclosed formula with graded evidence leaning against its stated purpose. Major medication interactions have been identified, and safety information is well characterized.
CreaGyn may help with constipation, indigestion, or magnesium deficiency. If you take levodopa/carbidopa, muscle relaxants, blood pressure medications, diabetes pills, antibiotics, or osteoporosis drugs, you'll want to check with your doctor or pharmacist before starting it — magnesium can change how several of these work.
Talk it over with your own healthcare provider to see if it's right for you.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Oct 25, 2018.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about CreaGyn, straight from the product label.
| Brand | Purus Labs |
|---|---|
| Barcode (UPC) | 855734002352 |
| Net contents | 109 Gram(s); 3.8 oz. |
| Market status | On market |
| Date entered into DSLD | Oct 25, 2018 |
| DSLD ID | 181793 |
| Product type | Other Combinations |
| Supplement form | Powder |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years) |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for CreaGyn by Purus Labs, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Magnesium | 80 mg | 20% |
| Carbohydrates | 1 Gram(s) | 1% |
| Sugar Alcohol | 1 Gram(s) | -- |
| MagnaPower | 1 Gram(s) | -- |
Other ingredients: Silica, Natural flavor, Calcium Silicate, Citric Acid
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formula
Substantiated Effects CreaGyn is a novel stimulant-free preworkout additive designed to provide skeletal muscle with intense hydration through HydroMax water-soluble Glycerine while simultaneously providing a stable, highly biovailable precursor to muscular currency in MagnaPower Magnesium Creatine Chelate.
Dietary Supplement with Hydromax Glycerol & Magnapower
Suggested/Recommended/Usage/Directions
CreaGyn usage: Add one to two servings to your preworkout beverage 15-30 minutes before training for maximum muscle hydration and volumization. For endurance training, mix with your intraworkout or hydration beverage and consume throughout training.
Simplified Usage 1 level scoop Add to your pre- or intraworkout 15-30 min. prior to exercise
Stack with AminoD + Condense
Precautions
Warning: CreaGyn is intended only for healthy adults above the age of 18. All individuals should consult a licensed healthcare practitioner before using this product. Do not use this product if you have been diagnosed with or have a family history of (including, but not limited to): heart disease, thyroid disease, liver disease, cancer, diabetes, hypoglycemia, hypo/hypertension, asthma, any psychiatric condition including depression or seizure disorder. Discontinue use and contact a medical doctor immediately if you experience an irregular or rapid heart beat, chest pain, shortness of breath, dizziness, lightheadedness, fainting or presyncope, tremors, headache, nausea, or other similar symptoms. If you are a performance athlete and/or subject to drug testing, please ensure compliance with your regulatory body prior to use.
Storage
Store in a cool, dry place away from direct sunlight.
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
General Statements
Maximize strength
Muscular hydrator
Cellular energy generator 35 true servings
Muscle volumization Hydration Volumize muscle cells
Follow us! Facebook.com/PurusLabs Twitter @PurusLabs Instagram @PurusLabs
Formulation
Zero stimulants
Stimulant free additive
FDA Statement of Identity
Dietary Supplement with Hydromax Glycerol & Magnapower
Brand IP Statement(s)
Supplement safely Nutravigilance Verified Supplement Safety Solutions Verified by the Nutravigilance program. Find out more at supplementsafetysolutions.com
HydroMax is a registered trademark of Glanbia Nutritionals. Creatine MagnaPower is a registered trademark of Albion Laboratories, Inc.
Seals/Symbols
Proudly made in the U.S.A.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
CreaGyn by Purus Labs label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in CreaGyn by Purus Labs
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size3.1 Gram(s) Dosage formPowder Servings per container35 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Magnesium
Interacts with295 drugs
Magnesium is an essential mineral your body needs for muscles, nerves, blood pressure, and many other functions, and supplements are useful for preven...
Magnesium monograph & interactionsCarbohydrates
MagnaPower
Other (inactive) ingredients: Silica, Natural flavor, Calcium Silicate, Citric Acid. These complete the product’s ingredient list but are not active constituents.
CreaGyn by Purus Labs Drug Interactions
HelloPharmacist Interaction Report
CreaGyn by Purus Labs contains magnesium, which interacts with a number of medications.
The most serious is levodopa/carbidopa (Sinemet), a Parkinson's medication — magnesium can cut its effectiveness significantly, reducing blood levels by about a third. Magnesium also has moderate interactions with skeletal muscle relaxants (like cyclobenzaprine), which it can strengthen and speed up, and with calcium channel blockers (blood pressure drugs like nifedipine), where it may add to their blood-pressure-lowering effect.
Read the full breakdown — every affected drug type, severity by severity
Additionally, magnesium may reduce how well your body absorbs quinolone antibiotics (like ciprofloxacin) and bisphosphonates (osteoporosis medications) — if you take either, space them 2–6 hours apart from this supplement. It can also increase the absorption and effects of sulfonylureas (diabetes pills like glyburide), raising your low blood sugar (hypoglycemia) risk, and may interact with potassium-sparing diuretics (water pills), acid reducers, and antacids.
We were unable to check the other ingredient, MagnaPower — we hold no interaction data for it. Before you start CreaGyn, run your exact medications through the checker on this page to see if any are affected.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against CreaGyn?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in CreaGyn interact with 295 drugs. Click any drug to see the details.
1 of the 3 ingredients in CreaGyn interact with drugs. Each result below shows which ingredient is responsible. Magnesium
Acetaminophen, ChlorzoxazoneAcetazone Forte, Extra Strength Tylenol Aches & Strains, Parafon Forte
How Acetaminophen, Chlorzoxazone interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumSkeletal Muscle Relaxants Moderate
Interaction Summary
Parenteral magnesium alters the pharmacokinetics of skeletal muscle relaxants, increasing their effects and accelerating the onset of effect.
Read the full Magnesium + Acetaminophen, Chlorzoxazone interactionAcetaminophen, Chlorzoxazone, CodeineAcetazone Forte C8, Parafon Forte C8
How Acetaminophen, Chlorzoxazone, Codeine interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumSkeletal Muscle Relaxants Moderate
Interaction Summary
Parenteral magnesium alters the pharmacokinetics of skeletal muscle relaxants, increasing their effects and accelerating the onset of effect.
Read the full Magnesium + Acetaminophen, Chlorzoxazone, Codeine interactionAcetaminophen, Codeine, MethocarbamolAcetaminophen, Codeine, Methocarbamol, Robaxacet 8
How Acetaminophen, Codeine, Methocarbamol interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumSkeletal Muscle Relaxants Moderate
Interaction Summary
Parenteral magnesium alters the pharmacokinetics of skeletal muscle relaxants, increasing their effects and accelerating the onset of effect.
Read the full Magnesium + Acetaminophen, Codeine, Methocarbamol interactionAcetaminophen, MethocarbamolRobaxacet
How Acetaminophen, Methocarbamol interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumSkeletal Muscle Relaxants Moderate
Interaction Summary
Parenteral magnesium alters the pharmacokinetics of skeletal muscle relaxants, increasing their effects and accelerating the onset of effect.
Read the full Magnesium + Acetaminophen, Methocarbamol interactionAcetaminophen, OrphenadrineOrfenagesic
How Acetaminophen, Orphenadrine interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumSkeletal Muscle Relaxants Moderate
Interaction Summary
Parenteral magnesium alters the pharmacokinetics of skeletal muscle relaxants, increasing their effects and accelerating the onset of effect.
Read the full Magnesium + Acetaminophen, Orphenadrine interactionAcetohexamideDymelor
How Acetohexamide interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumSulfonylureas Moderate
Interaction Summary
Magnesium increases the systemic absorption of sulfonylureas, increasing their effects and side effects.
Read the full Magnesium + Acetohexamide interactionAlcuroniumAlcuronium
How Alcuronium interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumSkeletal Muscle Relaxants Moderate
Interaction Summary
Parenteral magnesium alters the pharmacokinetics of skeletal muscle relaxants, increasing their effects and accelerating the onset of effect.
Read the full Magnesium + Alcuronium interactionAlendronateBinosto, Fosamax
How Alendronate interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumBisphosphonates Moderate
Interaction Summary
Magnesium can decrease absorption of bisphosphonates.
Read the full Magnesium + Alendronate interactionAlendronate Sodium
How Alendronate Sodium interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumBisphosphonates Moderate
Interaction Summary
Magnesium can decrease absorption of bisphosphonates.
Read the full Magnesium + Alendronate Sodium interactionAlendronate Sodium, CholecalciferolFosamax Plus D
How Alendronate Sodium, Cholecalciferol interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumBisphosphonates Moderate
Interaction Summary
Magnesium can decrease absorption of bisphosphonates.
Read the full Magnesium + Alendronate Sodium, Cholecalciferol interactionAlginic Acid, Aluminum HydroxideRafton
How Alginic Acid, Aluminum Hydroxide interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumAntacids Moderate
Interaction Summary
Use of acid reducers may reduce the laxative effect of magnesium oxide.
Read the full Magnesium + Alginic Acid, Aluminum Hydroxide interactionAluminum HydroxideAlu-Cap, Amphojel, Gaviscon
How Aluminum Hydroxide interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumAntacids Moderate
Interaction Summary
Use of acid reducers may reduce the laxative effect of magnesium oxide.
Read the full Magnesium + Aluminum Hydroxide interactionAluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium HydroxideAscriptin Codeine #2
How Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumAnticoagulant/antiplatelet Drugs, Antacids Moderate
Interaction Summary
Theoretically, magnesium may have antiplatelet effects, but the evidence is conflicting.
Read the full Magnesium + Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide interactionAluminum Hydroxide, Aspirin, Magnesium HydroxideAscriptin
How Aluminum Hydroxide, Aspirin, Magnesium Hydroxide interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumAnticoagulant/antiplatelet Drugs, Antacids Moderate
Interaction Summary
Theoretically, magnesium may have antiplatelet effects, but the evidence is conflicting.
Read the full Magnesium + Aluminum Hydroxide, Aspirin, Magnesium Hydroxide interactionAluminum Hydroxide, Magnesium Hydroxide (otc Drug)Maalox, Mucogel
How Aluminum Hydroxide, Magnesium Hydroxide (otc Drug) interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumAntacids Moderate
Interaction Summary
Use of acid reducers may reduce the laxative effect of magnesium oxide.
Read the full Magnesium + Aluminum Hydroxide, Magnesium Hydroxide (otc Drug) interactionAluminum Hydroxide, Magnesium Hydroxide, Simethicone (otc Drug)Mylanta
How Aluminum Hydroxide, Magnesium Hydroxide, Simethicone (otc Drug) interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumAntacids Moderate
Interaction Summary
Use of acid reducers may reduce the laxative effect of magnesium oxide.
Read the full Magnesium + Aluminum Hydroxide, Magnesium Hydroxide, Simethicone (otc Drug) interactionAluminum, Magnesium (otc Drug)Almagel
How Aluminum, Magnesium (otc Drug) interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumAntacids Moderate
Interaction Summary
Use of acid reducers may reduce the laxative effect of magnesium oxide.
Read the full Magnesium + Aluminum, Magnesium (otc Drug) interactionAmikacinAmikin, Arikayce
How Amikacin interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumAminoglycoside Antibiotics Moderate
Interaction Summary
Concomitant use of aminoglycoside antibiotics and magnesium can increase the risk for neuromuscular weakness.
Read the full Magnesium + Amikacin interactionAmilorideAmilamont, Midamor
How Amiloride interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumPotassium-sparing Diuretics Moderate
Interaction Summary
Potassium-sparing diuretics decrease excretion of magnesium, possibly increasing magnesium levels.
Read the full Magnesium + Amiloride interactionAmiloride, HydrochlorothiazideAmil-Co, Amilzide, Moduret 25, Moduretic
How Amiloride, Hydrochlorothiazide interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumPotassium-sparing Diuretics Moderate
Interaction Summary
Potassium-sparing diuretics decrease excretion of magnesium, possibly increasing magnesium levels.
Read the full Magnesium + Amiloride, Hydrochlorothiazide interactionAmlodipineNorliqva
How Amlodipine interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumCalcium Channel Blockers Moderate
Interaction Summary
Magnesium can have additive effects with calcium channel blockers, although evidence is conflicting.
Read the full Magnesium + Amlodipine interactionAmlodipine BenzoateKaterzia
How Amlodipine Benzoate interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumCalcium Channel Blockers Moderate
Interaction Summary
Magnesium can have additive effects with calcium channel blockers, although evidence is conflicting.
Read the full Magnesium + Amlodipine Benzoate interactionAmlodipine BesilateIstin
How Amlodipine Besilate interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumCalcium Channel Blockers Moderate
Interaction Summary
Magnesium can have additive effects with calcium channel blockers, although evidence is conflicting.
Read the full Magnesium + Amlodipine Besilate interactionAmlodipine BesylateNorvasc
How Amlodipine Besylate interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumCalcium Channel Blockers Moderate
Interaction Summary
Magnesium can have additive effects with calcium channel blockers, although evidence is conflicting.
Read the full Magnesium + Amlodipine Besylate interactionAmlodipine Besylate, BenazeprilLotrel
How Amlodipine Besylate, Benazepril interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumCalcium Channel Blockers Moderate
Interaction Summary
Magnesium can have additive effects with calcium channel blockers, although evidence is conflicting.
Read the full Magnesium + Amlodipine Besylate, Benazepril interactionAmlodipine, CelecoxibConsensi
How Amlodipine, Celecoxib interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumCalcium Channel Blockers Moderate
Interaction Summary
Magnesium can have additive effects with calcium channel blockers, although evidence is conflicting.
Read the full Magnesium + Amlodipine, Celecoxib interactionAmphotericin, TetracyclineMysteclin-F
How Amphotericin, Tetracycline interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumTetracycline Antibiotics Moderate
Interaction Summary
Magnesium decreases absorption of tetracyclines.
Read the full Magnesium + Amphotericin, Tetracycline interactionAspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium HydroxideAscriptin Codeine #3
How Aspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium Hydroxide interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumAnticoagulant/antiplatelet Drugs, Antacids Moderate
Interaction Summary
Theoretically, magnesium may have antiplatelet effects, but the evidence is conflicting.
Read the full Magnesium + Aspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium Hydroxide interactionAspirin, Caffeine, OrphenadrineInvagesic, Invagesic Forte, Norgesic, Norgesic Forte, Orphengesic, Orphengesic Forte
How Aspirin, Caffeine, Orphenadrine interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumSkeletal Muscle Relaxants, Anticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Parenteral magnesium alters the pharmacokinetics of skeletal muscle relaxants, increasing their effects and accelerating the onset of effect.
Read the full Magnesium + Aspirin, Caffeine, Orphenadrine interactionAspirin, Calcium Carbonate, Magnesium Carbonate, Magnesium OxideBufferin
How Aspirin, Calcium Carbonate, Magnesium Carbonate, Magnesium Oxide interacts with CreaGyn — through 1 ingredient. Tap an ingredient for the detail:
MagnesiumAnticoagulant/antiplatelet Drugs, Antacids Moderate
Interaction Summary
Theoretically, magnesium may have antiplatelet effects, but the evidence is conflicting.
Read the full Magnesium + Aspirin, Calcium Carbonate, Magnesium Carbonate, Magnesium Oxide interactionEach ingredient & the kinds of drugs it affects
For each ingredient in CreaGyn with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
Magnesium
Levodopa/Carbidopa (Sinemet)
Magnesium can reduce the bioavailability of levodopa/carbidopa.
Clinical research in healthy volunteers shows that taking magnesium oxide 1000 mg with levodopa 100 mg/carbidopa 10 mg reduces the area under the curve (AUC) of levodopa by 35% and of carbidopa by 81%. In vitro and animal research shows that magnesium produces an alkaline environment in the digestive tract, which might lead to degradation and reduced bioavailability of levodopa/carbidopa.
Aminoglycoside Antibiotics
Concomitant use of aminoglycoside antibiotics and magnesium can increase the risk for neuromuscular weakness.
Both aminoglycosides and magnesium reduce presynaptic acetylcholine release, which can lead to neuromuscular blockade and possible paralysis. This is most likely to occur with high doses of magnesium given intravenously.
Antacids
Use of acid reducers may reduce the laxative effect of magnesium oxide.
A retrospective analysis shows that, in the presence of H2 receptor antagonists (H2RAs) or proton pump inhibitors (PPIs), a higher dose of magnesium oxide is needed for a laxative effect. This may also occur with antacids. Under acidic conditions, magnesium oxide is converted to magnesium chloride and then to magnesium bicarbonate, which has an osmotic laxative effect. By reducing acidity, antacids may reduce the conversion of magnesium oxide to the active bicarbonate salt.
Bictegravir/Emtricitabine/Tenofovir Alafenamide (Biktarvy)
Magnesium might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Advise patients that bictegravir/emtricitabine/tenofovir alafenamide should be taken at least 2 hours before or 6 hours after magnesium containing products.
Bisphosphonates
Magnesium can decrease absorption of bisphosphonates.
Cations, including magnesium, can decrease bisphosphonate absorption. Advise patients to separate doses of magnesium and these drugs by at least 2 hours.
Calcium Channel Blockers
Magnesium can have additive effects with calcium channel blockers, although evidence is conflicting.
Magnesium inhibits calcium entry into smooth muscle cells and may therefore have additive effects with calcium channel blockers. Severe hypotension and neuromuscular blockades may occur when nifedipine is used with intravenous magnesium, although some contradictory evidence suggests that concurrent use of magnesium with nifedipine does not increase the risk of neuromuscular weakness. High doses of magnesium could theoretically have additive effects with other calcium channel blockers.
Digoxin
Magnesium salts may reduce absorption of digoxin.
Clinical evidence suggests that treatment with oral magnesium hydroxide or magnesium trisilicate reduces absorption of digoxin from the intestines. This may reduce the blood levels of digoxin and decrease its therapeutic effects.
Potassium-Sparing Diuretics
Potassium-sparing diuretics decrease excretion of magnesium, possibly increasing magnesium levels.
Potassium-sparing diuretics also have magnesium-sparing properties, which can counteract the magnesium losses associated with loop and thiazide diuretics. Theoretically, increased magnesium levels could result from concomitant use of potassium-sparing diuretics and magnesium supplements.
Quinolone Antibiotics
Magnesium decreases absorption of quinolones.
Magnesium can form insoluble complexes with quinolones and decrease their absorption. Advise patients to take these drugs at least 2 hours before, or 4 to 6 hours after, magnesium supplements.
Skeletal Muscle Relaxants
Parenteral magnesium alters the pharmacokinetics of skeletal muscle relaxants, increasing their effects and accelerating the onset of effect.
Parenteral magnesium shortens the time to onset of skeletal muscle relaxants by about 1 minute and prolongs the duration of action by about 2 minutes. Magnesium potentiates the effects of skeletal muscle relaxants by decreasing calcium-mediated release of acetylcholine from presynaptic nerve terminals, reducing postsynaptic sensitivity to acetylcholine, and having a direct effect on the membrane potential of myocytes. Magnesium also has vasodilatory actions and increases cardiac output, allowing a greater amount of muscle relaxant to reach the motor end plate. A clinical study found that low-dose rocuronium (0.45 mg/kg), when given after administration of magnesium 30 mg/kg over 10 minutes, has an accelerated onset of effect, which matches the onset of effect seen with a full-dose rocuronium regimen (0.6 mg/kg). In another clinical study, onset times for rocuronium doses of 0.3, 0.6, and 1.2 mg/kg were 86, 76, and 50 seconds, respectively, when given alone, but were reduced to 66, 44, and 38 seconds, respectively, when the doses were given after a 15-minute infusion of magnesium sulfate 60 mg/kg. Giving intraoperative intravenous magnesium sulfate, 50 mg/kg loading dose followed by 15 mg/kg/hour, reduces the onset time of rocuronium, enhances its clinical effects, reduces the dose of intraoperative opiates, and prolongs the spontaneous recovery time. It does not affect the activity of subsequently administered neostigmine.
Sulfonylureas
Magnesium increases the systemic absorption of sulfonylureas, increasing their effects and side effects.
Clinical research shows that administration of magnesium hydroxide with glyburide increases glyburide absorption, increases maximal insulin response by 35-fold, and increases the risk of hypoglycemia, when compared with glyburide alone. A similar interaction occurs between magnesium hydroxide and glipizide. The mechanism of this effect appears to be related to the elevation of gastrointestinal pH by magnesium-based antacids, increasing solubility and enhancing absorption of sulfonylureas.
Tetracycline Antibiotics
Magnesium decreases absorption of tetracyclines.
Magnesium can form insoluble complexes with tetracyclines in the gut and decrease their absorption and antibacterial activity. Advise patients to take these drugs 1 hour before or 2 hours after magnesium supplements.
Anticoagulant/Antiplatelet Drugs
Theoretically, magnesium may have antiplatelet effects, but the evidence is conflicting.
In vitro evidence shows that magnesium sulfate inhibits platelet aggregation, even at low concentrations. Some preliminary clinical evidence shows that infusion of magnesium sulfate increases bleeding time by 48% and reduces platelet activity. However, other clinical research shows that magnesium does not affect platelet aggregation, although inhibition of platelet-dependent thrombosis can occur.
Gabapentin (Neurontin)
Gabapentin absorption can be decreased by magnesium.
Clinical research shows that giving magnesium oxide orally along with gabapentin decreases the maximum plasma concentration of gabapentin by 33%, time to maximum concentration by 36%, and area under the curve by 43%. Advise patients to take gabapentin at least 2 hours before, or 4 to 6 hours after, magnesium supplements.
Sevelamer (Renagel, Renvela)
Sevelamer may increase serum magnesium levels.
In patients on hemodialysis, sevelamer use was associated with a 0.28 mg/dL increase in serum magnesium. The mechanism of this interaction remains unclear.
Brand information
Manufacturer and brand details for CreaGyn, from the product label.
Purus Labs
See all Purus Labs products- Name
- Purus Labs
- Street Address
- 1253 Andrews Parkway
- City
- Allen
- State
- TX
- ZipCode
- 75002
- Phone Number
- 855.629.6328
- Web Address
- www.puruslabs.net
CreaGyn by Purus Labs: Common Questions
Does CreaGyn by Purus Labs interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
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What is magnesium's role in the body?
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What is MagnaPower?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if CreaGyn is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind CreaGyn’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
CreaGyn's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 82 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Magnesium 82 references
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- Brown DD, Juhl RP. Decreased bioavailability of digoxin due to antacids and kaolin-pectin. N Engl J Med. 1976;295(19):1034-7. PubMed
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- Ravn HB, Vissinger H, Kristensen SD, et al. Magnesium inhibits platelet activity--an in vitro study. Thromb Haemost. 1996;76(1):88-93. DOI
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- Neuvonen PJ, Kivistö KT. The effects of magnesium hydroxide on the absorption and efficacy of two glibenclamide preparations. Br J Clin Pharmacol. 1991;32(2):215-20. PubMed
- Kivistö KT, Neuvonen PJ. Enhancement of absorption and effect of glipizide by magnesium hydroxide. Clin Pharmacol Ther. 1991;49(1):39-43. PubMed
- Neuvonen PJ, Kivistö KT. Enhancement of drug absorption by antacids. An unrecognised drug interaction. Clin Pharmacokinet. 1994;27(2):120-8. PubMed
- Shechter, M., Merz, C. N., Paul-Labrador, M., Meisel, S. R., Rude, R. K., Molloy, M. D., Dwyer, J. H., Shah, P. K., and Kaul, S. Beneficial antithrombotic effects of the association of pharmacological oral magnesium therapy with aspirin in coronary heart
- Ganzevoort, J. W., Hoogerwaard, E. M., and van der Post, J. A. [Hypocalcemic delirium due to magnesium sulphate therapy in a pregnant woman with pre-eclampsia]. Ned.Tijdschr.Geneeskd. 8-3-2002;146(31):1453-1456.
- Horner, S. M. Efficacy of intravenous magnesium in acute myocardial infarction in reducing arrhythmias and mortality. Meta-analysis of magnesium in acute myocardial infarction. Circulation 1992;86(3):774-779. PubMed
- Azria, E., Tsatsaris, V., Goffinet, F., Kayem, G., Mignon, A., and Cabrol, D. [Magnesium sulfate in obstetrics: current data]. J Gynecol.Obstet.Biol.Reprod.(Paris) 2004;33(6 Pt 1):510-517.
- Magee, L. A., Miremadi, S., Li, J., Cheng, C., Ensom, M. H., Carleton, B., Cote, A. M., and von Dadelszen, P. Therapy with both magnesium sulfate and nifedipine does not increase the risk of serious magnesium-related maternal side effects in women with p
- Henyan, N. N., Gillespie, E. L., White, C. M., Kluger, J., and Coleman, C. I. Impact of intravenous magnesium on post-cardiothoracic surgery atrial fibrillation and length of hospital stay: a meta-analysis. Ann.Thorac.Surg. 2005;80(6):2402-2406. PubMed
- Li, J., Zhang, Q., Zhang, M., and Egger, M. Intravenous magnesium for acute myocardial infarction. Cochrane.Database.Syst.Rev. 2007;(2):CD002755. PubMed
- Doyle, L. W., Crowther, C. A., Middleton, P., Marret, S., and Rouse, D. Magnesium sulphate for women at risk of preterm birth for neuroprotection of the fetus. Cochrane.Database.Syst.Rev. 2009;(1):CD004661. PubMed
- Han, S., Crowther, C. A., and Moore, V. Magnesium maintenance therapy for preventing preterm birth after threatened preterm labour. Cochrane.Database.Syst.Rev. 2010;(7):CD000940. PubMed
- Duley, L., Gulmezoglu, A. M., Henderson-Smart, D. J., and Chou, D. Magnesium sulphate and other anticonvulsants for women with pre-eclampsia. Cochrane.Database.Syst.Rev. 2010;(11):CD000025. PubMed
- Conde-Agudelo, A., Romero, R., and Kusanovic, J. P. Nifedipine in the management of preterm labor: a systematic review and metaanalysis. Am J Obstet.Gynecol. 2011;204(2):134-20. PubMed
- Wong, G. K., Boet, R., Poon, W. S., Chan, M. T., Gin, T., Ng, S. C., and Zee, B. C. Intravenous magnesium sulphate for aneurysmal subarachnoid hemorrhage: an updated systemic review and meta-analysis. Crit Care 2011;15(1):R52. PubMed
- Magee, L., Sawchuck, D., Synnes, A., and von, Dadelszen P. SOGC Clinical Practice Guideline. Magnesium sulphate for fetal neuroprotection. J Obstet.Gynaecol.Can. 2011;33(5):516-529.
- Doyle, L. W. Antenatal magnesium sulfate and neuroprotection. Curr Opin Pediatr 2012;24(2):154-159. PubMed
- McDonald, S. D., Lutsiv, O., Dzaja, N., and Duley, L. A systematic review of maternal and infant outcomes following magnesium sulfate for pre-eclampsia/eclampsia in real-world use. Int J Gynaecol.Obstet. 2012;118(2):90-96. PubMed
- Gordon, M., Naidoo, K., Akobeng, A. K., and Thomas, A. G. Osmotic and stimulant laxatives for the management of childhood constipation. Cochrane.Database.Syst.Rev. 2012;7:CD009118. PubMed
- Dodd, J. M., Crowther, C. A., and Middleton, P. Oral betamimetics for maintenance therapy after threatened preterm labour. Cochrane.Database.Syst.Rev. 2012;12:CD003927. PubMed
- Wu, X., Wang, C., Zhu, J., Zhang, C., Zhang, Y., and Gao, Y. Meta-analysis of randomized controlled trials on magnesium in addition to beta-blocker for prevention of postoperative atrial arrhythmias after coronary artery bypass grafting. BMC.Cardiovasc.D PubMed
- Thorp, J. M., Jr., Katz, V. L., Campbell, D., and Cefalo, R. C. Hypersensitivity to magnesium sulfate. Am.J.Obstet.Gynecol. 1989;161(4):889-890. PubMed
- Duley L and Gulmezoglu AM. Magnesium sulphate versus lytic cocktail for eclampsia. Cochrane Database of Systematic Reviews 2000;(3) PubMed
- Gibbins KJ, Browning KR, Lopes VV, Anderson BL, Rouse DJ. Evaluation of the clinical use of magnesium sulfate for cerebral palsy prevention. Obstet Gynecol 2013;121(2 Pt 1):235-40. PubMed
- Ji D. Oral magnesium sulfate causes perforation during bowel preparation for fiberoptic colonoscopy in patients with colorectal cancer. J Emerg Med 2012;43(4):716-7. PubMed
- Yagi T, Naito T, Mino Y, Umemura K, Kawakami J. Impact of concomitant antacid administration on gabapentin plasma exposure and oral bioavailability in healthy adult subjects. Drug Metab Pharmacokinet 2012;27(2):248-54. PubMed
- Yamasaki M, Funakoshi S, Matsuda S, Imazu T, Takeda Y, Murakami T, Maeda Y. Interaction of magnesium oxide with gastric acid secretion inhibitors in clinical pharmacotherapy. Eur J Clin Pharmacol 2014;70(8):921-4. PubMed
- Choi ES, Jeong WJ, Ahn SH, Oh AY, Jeon YT, Do SH. Magnesium sulfate accelerates the onset of low-dose rocuronium in patients undergoing laryngeal microsurgery. J Clin Anesth. 2017 Feb;36:102-106. PubMed
- Ikee R, Toyoyama T, Endo T, Tsunoda M, Hashimoto N. Impact of sevelamer hydrochloride on serum magnesium concentrations in hemodialysis patients. Magnes Res. 2016 Apr 1;29(4):184-90. PubMed
- Miller ES, Sakowicz A, Leger E. Lange E, Yee LM. The association between receipt of intrapartum magnesium and postpartum hemorrhage. Am J Obstet Gynecol 2018;218(1 Suppl):S165.
- Rodríguez-Rubio L, Solis Garcia Del Pozo J, Nava E, Jordán J. Interaction between magnesium sulfate and neuromuscular blockers during the perioperative period. A systematic review and meta-analysis. J Clin Anesth. 2016;34:524-34. PubMed
- Brown RS. Magnesium Sulfate: Another Cause of a Solute Diuresis. Am J Kidney Dis. 2017;69(4):550-551. PubMed
- Park H, Qin R, Smith TJ, et al. North Central Cancer Treatment Group N10C2 (Alliance): a double-blind placebo-controlled study of magnesium supplements to reduce menopausal hot flashes. Menopause. 2015;22(6):627-32. PubMed
- Sakanoue M, Sanada J, Kanekura T. Skin eruption elicited by magnesium oxide (Maglax). J Dermatol. 2016;43(2):221-2.
- Iwamuro M, Saito S, Yoshioka M, et al. A Magnesium Oxide Bezoar. Intern Med. 2018;57(21):3087-3091. PubMed
- Vilchez G, Dai J, Kumar K, Mundy D, Kontopoulos E, Sokol RJ. Racial/ethnic disparities in magnesium sulfate neuroprotection: a subgroup analysis of a multicenter randomized controlled trial. J Matern Fetal Neonatal Med. 2018;31(17):2304-2311. PubMed
- Drug Safety Communication: FDA Recommends Against Prolonged Use of Magnesium Sulfate to Stop Pre-term Labor Due to Bone Changes in Exposed Babies. U.S. Food and Drug Administration (FDA), May 30, 2013. https://www.fda.gov/downloads/Drugs/DrugSafety/UCM353
- Committee Opinion: Magnesium Sulfate Use in Obstetrics. The American College of Obstetricians and Gynecologists Committee on Obstetric Practice Society for Maternal-Fetal Medicine, Number 652, January 2016. https://www.acog.org/Clinical-Guidance-and-Publi
- Kashihara Y, Terao Y, Yoda K, et al. Effects of magnesium oxide on pharmacokinetics of L-dopa/carbidopa and assessment of pharmacodynamic changes by a model-based simulation. Eur J Clin Pharmacol. 2019;75(3):351-361. PubMed
- Shepherd E, Salam RA, Manhas D, et al. Antenatal magnesium sulphate and adverse neonatal outcomes: A systematic review and meta-analysis. PLoS Med. 2019;16(12):e1002988. PubMed
- Hong JY, Hong JY, Choi YS, et al. Antenatal magnesium sulfate treatment and risk of necrotizing enterocolitis in preterm infants born at less than 32 weeks of gestation. Sci Rep. 2020;10(1):12826. PubMed
- Schuh S, Sweeney J, Rumantir M, et al. Effect of nebulized magnesium vs placebo added to albuterol on hospitalization among children with refractory acute asthma treated in the emergency department: a randomized clinical trial. JAMA. 2020;324(20):2038-20 PubMed
- Almeida CED, Carvalho LR, Andrade CVC, Nascimento PD Jr, Barros GAM, Modolo NSP. Effects of magnesium sulphate on the onset time of rocuronium at different doses: a randomized clinical trial. Braz J Anesthesiol. 2021;71(5):482-8. PubMed
- Gochi Valdovinos A, Arriaga-Redondo M, Dejuan Bitriá E, Pérez Rodríguez I, Márquez Isidro E, Blanco Bravo D. Prenatal therapy with magnesium sulphate and intestinal obstruction due to meconium in preterm newborns. An Pediatr (Engl Ed). 2022 Feb;96(2):138- PubMed
- Iio K, Kondo E, Shibata E, et al. Long-term tocolysis with magnesium sulfate as a risk factor for low bone mass: a case series. J Med Cases. 2022 Feb;13(2):47-50. PubMed
- Eiraku K, Uozumi Y, Hieda M, Maruyama T, Nomura H. A senile case of heart failure associated with hypermagnesemia induced by magnesium-containing laxative agent. Geriatr Gerontol Int. 2022;22(10):897-899.
- Enayati A, Gin JH, Sajeev JK, et al. Efficacy of intravenous magnesium for the management of non-post operative atrial fibrillation with rapid ventricular response: A systematic review and meta-analysis. J Cardiovasc Electrophysiol 2023;34(5):1286-1295. PubMed
- Su YH, Luo DC, Pang Y. Effects of intraoperative Magnesium sulfate infusion on emergency agitation during general anesthesia in patients undergoing radical mastectomy: a randomized controlled study. BMC Anesthesiol 2023;23(1):326. PubMed
- Han J, Park HY, Shin HJ, Chung SH, Do SH. Effects of magnesium sulphate on neostigmine-induced recovery from moderate neuromuscular blockade with rocuronium: a randomized controlled trial. Magnes Res 2023;36(2):31-39. PubMed
- Lee AT, Cordova JC, Jamplis RP, Pomicter GR. Posterior Reversible Encephalopathy Syndrome and Eclampsia in the Setting of Magnesium Toxicity: A Case Report. A A Pract 2023;17(11):e01726. PubMed
- Darmawan D, Rengganis I, Rumende CM, et al. Effectiveness and Safety of Nebulized Magnesium as Last Line Treatment in Adults with Acute Asthma Attack: A Systematic Review and Meta-Analysis. Acta Med Indones 2024;56(1):3-12.
- Shepherd ES, Goldsmith S, Doyle LW, et al. Magnesium sulphate for women at risk of preterm birth for neuroprotection of the fetus. Cochrane Database Syst Rev 2024;5(5):CD004661. PubMed
- US Food and Drug Administration (FDA). Biktarvy Prescribing Information. October 2024. Available at: https://www.accessdata.fda.gov/drugsatfda_docs/label/2024/210251Orig1s020lbl.pdf. Accessed July 16, 2025.
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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
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