ParaSym+ Ingredients & Drug Interactions
by Zemvelo
What is this page for?
First and foremost: checking ParaSym+ 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
ParaSym+ is a dietary supplement by Zemvelo with 6 active ingredients. Its ingredients are commonly taken for anxiety and stress, sleep problems, relaxation.Based on those ingredients, 1,548 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Sensoril, L-Theanine, Gamma-Aminobutyric Acid. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against ParaSym+ by Zemvelo
Ask about any prescription or over-the-counter medication and we check it for interactions with ParaSym+ by Zemvelo — 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 ParaSym+ by Zemvelo
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
ParaSym+ contains six active ingredients. GABA and L-theanine are amino acids that support relaxation and nervous system function.
Magnesium is an essential mineral involved in muscle and nerve function. Sensoril is a standardized ashwagandha extract that supports stress and sleep.
Vitamin C is an antioxidant vitamin, and ActivFulvic is a fulvic acid ingredient. The product also contains hypromellose as an inactive ingredient (the capsule material).
Does it work?
Moderate evidence
The evidence for this product's ingredients is mixed and often limited. L-theanine is possibly effective for cognitive function, and ashwagandha is possibly effective for insomnia, anxiety, stress, and generalized anxiety disorder.
Magnesium is effective for constipation and indigestion, and vitamin C is effective for vitamin C deficiency. However, GABA, the other proposed uses of L-theanine and ashwagandha, and fulvic acid all have insufficient evidence to rate their effectiveness.
We don't hold effectiveness data for Sensoril as a branded ingredient. If you're considering ParaSym+ for a specific condition, talk with your pharmacist about whether the evidence supports its use.
How safe is it?
Well-documented data
Most of these ingredients are generally well tolerated in the short term, though long-term safety data is limited for several. GABA and L-theanine may cause drowsiness, headache, nausea, or gastrointestinal upset.
Magnesium commonly causes diarrhea, nausea, or stomach irritation—especially at higher doses. Ashwagandha may cause diarrhea, nausea, or gastrointestinal upset at typical doses, though serious liver problems have been reported rarely.
Vitamin C is well tolerated at normal doses but can cause digestive upset, kidney stones, or other effects at very high doses above 2 grams daily. Fulvic acid appears well tolerated short-term but may cause diarrhea, headache, or sore throat.
For pregnancy: L-theanine and ashwagandha should be avoided due to insufficient safety data; ashwagandha is traditionally thought to risk miscarriage. Magnesium is needed in pregnancy but use only under your doctor's guidance.
Vitamin C at normal dietary amounts is fine, but avoid high-dose supplements. Data on GABA and fulvic acid in pregnancy isn't on file—talk with your doctor.
For breastfeeding, avoid L-theanine, ashwagandha, and fulvic acid; magnesium and vitamin C at normal amounts are appropriate, but check with your healthcare provider before using supplements.
Meds to double-check
Major interaction found
Before taking ParaSym+, double-check with your pharmacist if you take levodopa/carbidopa (a Major interaction with magnesium). Also screen these drug types: blood pressure medications, blood thinners (especially warfarin), skeletal muscle relaxants, blood sugar medications, cancer chemotherapy, thyroid hormones, benzodiazepines, immunosuppressants, antidepressants, oral contraceptives or hormone therapy, and antibiotics (especially quinolones).
Several other medication types also interact—use the checker below to verify your full list.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Major medication interactions have been identified, and safety information is well characterized.
ParaSym+ is designed for relaxation and sleep support, with some ingredients backed by limited evidence. If you take any blood pressure medications, blood thinners, diabetes drugs, cancer treatments, thyroid medication, or levodopa/carbidopa, you need to check this product against your exact medications before starting.
Pregnant or breastfeeding individuals should talk with their doctor or pharmacist first.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 6 of 6 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated May 21, 2025.
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 ParaSym+, straight from the product label.
| Brand | Zemvelo |
|---|---|
| Barcode (UPC) | 891663002612 |
| Net contents | 60 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | May 21, 2025 |
| DSLD ID | 333500 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Children 4 or More Years of Age, Vegan, Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free |
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 ParaSym+ by Zemvelo, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Gamma-Aminobutyric Acid | 125 mg | -- |
| L-Theanine | 200 mg | -- |
| Magnesium | 150 mg | 36% |
| Sensoril | 250 mg | -- |
| Vitamin C | 90 mg | 100% |
| ActivFulvic | 10 mg | -- |
Other ingredients: Hypromellose
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
Harmonize your metabolism with Sensoril and L-Theanine Support proper nutrient absorption and cellular activity with ActivFulvic
Formulation
Rebalance, rejuvenate and restore metabolic activity
Metabolic support With 24 hour support
Vegan
GF (Gluten free) Non GMO
Third party tested
Brand IP Statement(s)
PureWay-C and PureWay C logo are marks of One Innovation Labs, LLC in the U.S. and/or other countries
FDA Disclaimer Statement
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.
FDA Statement of Identity
Dietary Supplement
General Statements
"Love & Gratitude"
Suggested/Recommended/Usage/Directions
Directions: Adults: Take 2 capsules per day or as recommended by a nutritionally informed physician. Age 4+: Half of the adult serving. Children under 4: Consult a physician.
Precautions
Children under 4: Consult a physician.
Seals/Symbols
Manufactured in U.S.A. with quality ingredients from around the world cGMP
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
ParaSym+ by Zemvelo 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 ParaSym+ by Zemvelo
These are the 6 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 Capsule(s) Dosage formCapsule Servings per container30 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.
Gamma-Aminobutyric Acid
Interacts with419 drugs
GABA is a calming chemical messenger (neurotransmitter) that your body makes on its own, and it is sold as a supplement for stress, anxiety, and sleep...
Gamma-Aminobutyric Acid monograph & interactionsL-Theanine
Interacts with565 drugs
Theanine (usually L-theanine) is an amino acid found naturally in tea leaves that many people take to feel calmer and less stressed without strong dro...
L-Theanine monograph & interactionsMagnesium
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 & interactionsSensoril
Interacts with1,372 drugs
Ashwagandha is an Ayurvedic herb most often taken to help with stress, anxiety, and sleep, and some small studies suggest it may help, though the evid...
Sensoril monograph & interactionsVitamin C
Interacts with207 drugs
Vitamin C (ascorbic acid) is an essential nutrient your body needs but cannot make, so you must get it from food or supplements. It's important for im...
Vitamin C monograph & interactionsActivFulvic
Interacts with257 drugs
Fulvic acid is a natural compound formed when plants and microbes break down in soil, and it is sold as a supplement for energy, gut, and overall well...
ActivFulvic monograph & interactionsOther (inactive) ingredients: Hypromellose. These complete the product’s ingredient list but are not active constituents.
ParaSym+ by Zemvelo Drug Interactions
HelloPharmacist Interaction Report
ParaSym+ by Zemvelo contains six active ingredients, and together they interact with a substantial number of medications.
The most serious interaction involves magnesium, which can reduce the effectiveness of levodopa/carbidopa (used for Parkinson's disease) by up to 35%, a Major-severity concern.
Read the full breakdown — every affected drug type, severity by severity
The product's other ingredients carry Moderate-severity interactions across several drug types. Magnesium also affects skeletal muscle relaxants, potassium-sparing diuretics, calcium channel blockers, antacids, blood sugar drugs (sulfonylureas), quinolone antibiotics, and bisphosphonate bone medications.
GABA, L-theanine, and ashwagandha all theoretically increase the sedative effects of CNS depressants and blood pressure medications. Ashwagandha additionally interacts with benzodiazepines, immunosuppressants, diabetes medications, thyroid hormones, liver-toxic drugs, and certain cancer medications.
Vitamin C affects estrogens (including oral contraceptives), cancer chemotherapy drugs, warfarin (a blood thinner), levothyroxine, and several others. Fulvic acid may interfere with blood thinners, immunosuppressants, and thyroid medication.
L-theanine carries a Minor interaction with serotonergic drugs (antidepressants and related medications), though no clinical cases of serotonin syndrome have been reported. Vitamin C and GABA also have Minor interactions with CNS depressants.
Altogether, these interactions span 1,526 individual medications.
Use the medication checker on this page to verify your specific prescriptions before starting ParaSym+.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against ParaSym+?
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 ParaSym+ interact with 1,548 drugs. Click any drug to see the details.
6 of the 6 ingredients in ParaSym+ interact with drugs. Each result below shows which ingredient is responsible. Sensoril L-Theanine Gamma-Aminobutyric Acid Magnesium ActivFulvic Vitamin C
Acetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with ParaSym+ — through 2 ingredients. Tap an ingredient for the detail:
SensorilHepatotoxic Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, taking ashwagandha with hepatotoxic drugs might increase the risk of liver damage.
Read the full Sensoril + Acetaminophen, Caffeine, Isometheptene interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Caffeine, Isometheptene interactionAcetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual
How Acetaminophen, Caffeine, Pyrilamine interacts with ParaSym+ — through 2 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Sensoril + Acetaminophen, Caffeine, Pyrilamine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Caffeine, Pyrilamine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 1a2 (cyp1a2) Substrates, Hepatotoxic Drugs +2 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Sensoril + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with ParaSym+ — through 4 ingredients. Tap an ingredient for the detail:
SensorilSerotonergic Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +3 Moderate
Interaction Summary
Some animal studies have reported that ashwagandha can enhance serotonergic transmission by altering certain serotonin (5-HT) receptors.
Read the full Sensoril + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionL-theanineCns Depressants, Serotonergic Drugs Minor
Interaction Summary
Theoretically, theanine might have additive sedative effects when used in conjunction with CNS depressants.
Read the full L-theanine + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionGamma-aminobutyric AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma-aminobutyric Acid + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilSerotonergic Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +2 Moderate
Interaction Summary
Some animal studies have reported that ashwagandha can enhance serotonergic transmission by altering certain serotonin (5-HT) receptors.
Read the full Sensoril + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 1a2 (cyp1a2) Substrates, Hepatotoxic Drugs +2 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Sensoril + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilSerotonergic Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +2 Moderate
Interaction Summary
Some animal studies have reported that ashwagandha can enhance serotonergic transmission by altering certain serotonin (5-HT) receptors.
Read the full Sensoril + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PseudoephedrineChildren's Tylenol Cold Plus Cough, Tylenol Cold Ex Strength
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilSerotonergic Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +2 Moderate
Interaction Summary
Some animal studies have reported that ashwagandha can enhance serotonergic transmission by altering certain serotonin (5-HT) receptors.
Read the full Sensoril + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, SalicylamideRhinogesic GG
How Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 1a2 (cyp1a2) Substrates, Hepatotoxic Drugs +2 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Sensoril + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylephrineAlka-Seltzer PLUS, Histex SR, Protid
How Acetaminophen, Chlorpheniramine, Phenylephrine interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 3a4 (cyp3a4) Substrates, Serotonergic Drugs +2 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Sensoril + Acetaminophen, Chlorpheniramine, Phenylephrine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Phenylephrine interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Chlorpheniramine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, Phenylephrine, SalicylamideRhinogesic, Rhinogesic JR
How Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 3a4 (cyp3a4) Substrates, Serotonergic Drugs +2 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Sensoril + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylpropanolamineAlumadrine, Conex, Sinadrin Max Strength, Sinulin
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilHepatotoxic Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
Theoretically, taking ashwagandha with hepatotoxic drugs might increase the risk of liver damage.
Read the full Sensoril + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, OpiumHista-Derfule
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interacts with ParaSym+ — through 4 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 3a4 (cyp3a4) Substrates, Serotonergic Drugs +3 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Sensoril + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionL-theanineCns Depressants, Serotonergic Drugs Minor
Interaction Summary
Theoretically, theanine might have additive sedative effects when used in conjunction with CNS depressants.
Read the full L-theanine + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionGamma-aminobutyric AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma-aminobutyric Acid + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, PhenyltoloxamineNorel Plus
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 3a4 (cyp3a4) Substrates, Serotonergic Drugs +2 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Sensoril + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interactionAcetaminophen, Chlorpheniramine, PseudoephedrineAlka-Seltzer PLUS Liquid Gels, Children's Tylenol Cold, Codimal, Comtrex, Extra Strength Tylenol Allergy Sinus, Lorsin +3 more
How Acetaminophen, Chlorpheniramine, Pseudoephedrine interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilHepatotoxic Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
Theoretically, taking ashwagandha with hepatotoxic drugs might increase the risk of liver damage.
Read the full Sensoril + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionAcetaminophen, ChlorzoxazoneAcetazone Forte, Extra Strength Tylenol Aches & Strains, Parafon Forte
How Acetaminophen, Chlorzoxazone interacts with ParaSym+ — through 3 ingredients. 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 interactionSensorilCytochrome P450 1a2 (cyp1a2) Substrates, Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Sensoril + Acetaminophen, Chlorzoxazone interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorzoxazone interactionAcetaminophen, Chlorzoxazone, CodeineAcetazone Forte C8, Parafon Forte C8
How Acetaminophen, Chlorzoxazone, Codeine interacts with ParaSym+ — through 5 ingredients. Tap an ingredient for the detail:
SensorilHepatotoxic Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, taking ashwagandha with hepatotoxic drugs might increase the risk of liver damage.
Read the full Sensoril + Acetaminophen, Chlorzoxazone, Codeine interactionMagnesiumSkeletal 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 interactionGamma-aminobutyric AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma-aminobutyric Acid + Acetaminophen, Chlorzoxazone, Codeine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorzoxazone, Codeine interactionL-theanineCns Depressants Minor
Interaction Summary
Theoretically, theanine might have additive sedative effects when used in conjunction with CNS depressants.
Read the full L-theanine + Acetaminophen, Chlorzoxazone, Codeine interactionAcetaminophen, CodeineTylenol No.3, Tylenol w/ Codeine
How Acetaminophen, Codeine interacts with ParaSym+ — through 4 ingredients. Tap an ingredient for the detail:
SensorilCns Depressants, Hepatotoxic Drugs +1 Moderate
Interaction Summary
Theoretically, taking ashwagandha might increase the sedative effects of CNS depressants.
Read the full Sensoril + Acetaminophen, Codeine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Codeine interactionL-theanineCns Depressants Minor
Interaction Summary
Theoretically, theanine might have additive sedative effects when used in conjunction with CNS depressants.
Read the full L-theanine + Acetaminophen, Codeine interactionGamma-aminobutyric AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma-aminobutyric Acid + Acetaminophen, Codeine interactionAcetaminophen, Codeine, DoxylamineMersyndol
How Acetaminophen, Codeine, Doxylamine interacts with ParaSym+ — through 4 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 1a2 (cyp1a2) Substrates, Cns Depressants +1 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Sensoril + Acetaminophen, Codeine, Doxylamine interactionGamma-aminobutyric AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma-aminobutyric Acid + Acetaminophen, Codeine, Doxylamine interactionL-theanineCns Depressants Minor
Interaction Summary
Theoretically, theanine might have additive sedative effects when used in conjunction with CNS depressants.
Read the full L-theanine + Acetaminophen, Codeine, Doxylamine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Codeine, Doxylamine interactionAcetaminophen, Codeine, MethocarbamolAcetaminophen, Codeine, Methocarbamol, Robaxacet 8
How Acetaminophen, Codeine, Methocarbamol interacts with ParaSym+ — through 5 ingredients. 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 interactionSensorilCytochrome P450 1a2 (cyp1a2) Substrates, Hepatotoxic Drugs +1 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Sensoril + Acetaminophen, Codeine, Methocarbamol interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Codeine, Methocarbamol interactionL-theanineCns Depressants Minor
Interaction Summary
Theoretically, theanine might have additive sedative effects when used in conjunction with CNS depressants.
Read the full L-theanine + Acetaminophen, Codeine, Methocarbamol interactionGamma-aminobutyric AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma-aminobutyric Acid + Acetaminophen, Codeine, Methocarbamol interactionAcetaminophen, Dexbrompheniramine, PseudoephedrineSinadrin Plus
How Acetaminophen, Dexbrompheniramine, Pseudoephedrine interacts with ParaSym+ — through 2 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 1a2 (cyp1a2) Substrates, Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Sensoril + Acetaminophen, Dexbrompheniramine, Pseudoephedrine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Dexbrompheniramine, Pseudoephedrine interactionAcetaminophen, DextromethorphanTylenol Cough Ex Strength
How Acetaminophen, Dextromethorphan interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 3a4 (cyp3a4) Substrates, Serotonergic Drugs +2 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Sensoril + Acetaminophen, Dextromethorphan interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Dextromethorphan interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Dextromethorphan interactionAcetaminophen, Dextromethorphan, Doxylamine, PseudoephedrineVicks NyQuil
How Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilHepatotoxic Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
Theoretically, taking ashwagandha with hepatotoxic drugs might increase the risk of liver damage.
Read the full Sensoril + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylephrineConar-A
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 3a4 (cyp3a4) Substrates, Serotonergic Drugs +2 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP3A4 substrates.
Read the full Sensoril + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylpropanolamineAnatuss
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilSerotonergic Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +2 Moderate
Interaction Summary
Some animal studies have reported that ashwagandha can enhance serotonergic transmission by altering certain serotonin (5-HT) receptors.
Read the full Sensoril + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PseudoephedrineRobitussin Cold, Severe Cold, Suphedrine Cold/Cough
How Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilCytochrome P450 1a2 (cyp1a2) Substrates, Hepatotoxic Drugs +2 Moderate
Interaction Summary
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Sensoril + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Phenylpropanolamine, PyrilamineTheracaps
How Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilSerotonergic Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +2 Moderate
Interaction Summary
Some animal studies have reported that ashwagandha can enhance serotonergic transmission by altering certain serotonin (5-HT) receptors.
Read the full Sensoril + Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interactionAcetaminophen, Dextromethorphan, PseudoephedrineAlka-Seltzer PLUS Flu Liquid Gels, Non Aspirin Cold Caps, Tylenol Cold, Tylenol Flu Daytime Ex Strength, Tylenol Flu Ex Strength
How Acetaminophen, Dextromethorphan, Pseudoephedrine interacts with ParaSym+ — through 3 ingredients. Tap an ingredient for the detail:
SensorilSerotonergic Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +2 Moderate
Interaction Summary
Some animal studies have reported that ashwagandha can enhance serotonergic transmission by altering certain serotonin (5-HT) receptors.
Read the full Sensoril + Acetaminophen, Dextromethorphan, Pseudoephedrine interactionL-theanineSerotonergic Drugs Minor
Interaction Summary
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting.
Read the full L-theanine + Acetaminophen, Dextromethorphan, Pseudoephedrine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Dichloralantipyrine, IsomethepteneAmidrine, Midchlor, Migquin, Migratine
How Acetaminophen, Dichloralantipyrine, Isometheptene interacts with ParaSym+ — through 4 ingredients. Tap an ingredient for the detail:
SensorilHepatotoxic Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, taking ashwagandha with hepatotoxic drugs might increase the risk of liver damage.
Read the full Sensoril + Acetaminophen, Dichloralantipyrine, Isometheptene interactionGamma-aminobutyric AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma-aminobutyric Acid + Acetaminophen, Dichloralantipyrine, Isometheptene interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Dichloralantipyrine, Isometheptene interactionL-theanineCns Depressants Minor
Interaction Summary
Theoretically, theanine might have additive sedative effects when used in conjunction with CNS depressants.
Read the full L-theanine + Acetaminophen, Dichloralantipyrine, Isometheptene interactionAcetaminophen, Dichloralphenazone, IsomethepteneMidrin
How Acetaminophen, Dichloralphenazone, Isometheptene interacts with ParaSym+ — through 4 ingredients. Tap an ingredient for the detail:
SensorilCns Depressants, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, taking ashwagandha might increase the sedative effects of CNS depressants.
Read the full Sensoril + Acetaminophen, Dichloralphenazone, Isometheptene interactionL-theanineCns Depressants Minor
Interaction Summary
Theoretically, theanine might have additive sedative effects when used in conjunction with CNS depressants.
Read the full L-theanine + Acetaminophen, Dichloralphenazone, Isometheptene interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Dichloralphenazone, Isometheptene interactionGamma-aminobutyric AcidCns Depressants Minor
Interaction Summary
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants.
Read the full Gamma-aminobutyric Acid + Acetaminophen, Dichloralphenazone, Isometheptene interactionEach ingredient & the kinds of drugs it affects
For each ingredient in ParaSym+ with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.
Sensoril
Antidiabetes Drugs
Theoretically, taking ashwagandha with antidiabetes drugs might increase the risk of hypoglycemia.
There is preliminary clinical evidence suggesting that ashwagandha might lower blood glucose levels. Theoretically, ashwagandha might have additive effects when used with antidiabetes drugs and increase the risk of hypoglycemia.
Antihypertensive Drugs
Theoretically, taking ashwagandha with antihypertensive drugs might increase the risk of hypotension.
Animal research suggests that ashwagandha might lower systolic and diastolic blood pressure. Theoretically, ashwagandha might have additive effects when used with antihypertensive drugs and increase the risk of hypotension.
Benzodiazepines
Theoretically, taking ashwagandha might increase the sedative effects of benzodiazepines.
There is preliminary evidence that ashwagandha might have an additive effect with diazepam (Valium) and clonazepam (Klonopin). This may also occur with other benzodiazepines.
Cns Depressants
Theoretically, taking ashwagandha might increase the sedative effects of CNS depressants.
Ashwagandha seems to have sedative effects. Theoretically, this may potentiate the effects of barbiturates, other sedatives, and anxiolytics.
Hepatotoxic Drugs
Theoretically, taking ashwagandha with hepatotoxic drugs might increase the risk of liver damage.
Ashwagandha has been linked to cases of acute hepatitis, liver failure, hepatic encephalopathy, autoimmune hepatitis, the need for liver transplantation, and death due to liver failure.
Immunosuppressants
Theoretically, taking ashwagandha might decrease the effects of immunosuppressants.
Ashwagandha has demonstrated immunostimulant effects in humans. Animal research has shown that ashwagandha can attenuate the immunosuppression caused by cyclophosphamide.
Thyroid Hormone
Ashwagandha might increase the effects and adverse effects of thyroid hormone.
Concomitant use of ashwagandha with thyroid hormones may cause additive therapeutic and adverse effects. Preliminary clinical research and animal studies suggest that ashwagandha boosts thyroid hormone synthesis and secretion. In one clinical study, ashwagandha increased triiodothyronine (T3) and thyroxine (T4) levels by 41.5% and 19.6%, respectively, and reduced serum TSH levels by 17.4% from baseline in adults with subclinical hypothyroidism.
Cytochrome P450 1A2 (Cyp1A2) Substrates
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP1A2 substrates.
In vitro research shows that ashwagandha extract induces CYP1A2 enzymes.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, ashwagandha might decrease the levels and clinical effects of CYP3A4 substrates.
In vitro research shows that ashwagandha extract induces CYP3A4 enzymes.
Serotonergic Drugs
Some animal studies have reported that ashwagandha can enhance serotonergic transmission by altering certain serotonin (5-HT) receptors. However, there is no evidence to suggest that ashwagandha increases the risk of serotonin-related effects, and there have been no published case reports of serotonin syndrome when combined with other serotonergic drugs. Nevertheless, due to the lack of extensive studies on the matter and the fact that ashwagandha appears to affect serotonergic pathways, it would be prudent to exercise caution when combining it with drugs that affect serotonin. [References: - Effects of Withania somnifera (Ashwaga ndha) on Stress and the Stress-Related Neuropsychiatric Disorders Anxiety, Depression, and Insomnia. Curr Neuropharmacol. 2021 Sep 14; 19: 1468–1495. - A Prospective, Randomized Double-Blind, Placebo-Controlled Study of Safety and Efficacy of a High-Concentration Full-Spectrum Extract of Ashwagandha Root in Reducing Stress and Anxiety in Adults. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3573577/]
L-Theanine
Antihypertensive Drugs
Theanine might lower blood pressure, potentiating the effects of antihypertensive drugs.
Animal research shows that theanine can lower blood pressure in spontaneously hypertensive animals. Theoretically, concomitant use of theanine and antihypertensive drugs might potentiate the antihypertensive activity.
Cns Depressants
Theoretically, theanine might have additive sedative effects when used in conjunction with CNS depressants. However, it is unclear if this concern is clinically relevant.
Theoretically, theanine may compete with glutamate and/or increase plasma gamma-aminobutyric acid (GABA) levels, which could cause CNS depression. In one clinical study, some subjects taking oral theanine reported drowsiness.
Serotonergic Drugs
Clinical studies regarding the effects of L-theanine on serotonin levels are conflicting. Some studies suggest it can increase serotonin levels in the brain while others report that it may decrease them. Nevertheless, there have been no reports of l-theanine being a causative agent in serotonergic-related side effects or serotonin syndrome.
Gamma-Aminobutyric Acid
Antihypertensive Drugs
Theoretically, taking GABA with antihypertensive drugs might increase the risk of hypotension.
Some clinical research shows that GABA can decrease blood pressure in patients with hypertension.
Cns Depressants
Theoretically, GABA might have additive sedative effects when used in conjunction with CNS depressants. However, it is unclear if this concern is clinically relevant.
Endogenous GABA has well-established relaxant effects and GABA(A) receptors have an established physiological role in sleep. However, the effects of GABA supplements are unclear, as it is unknown whether exogenous GABA crosses the blood-brain barrier. Although there have been limited reports of drowsiness or tiredness with GABA supplements, these effects have not been widely reported in clinical studies. Additionally, intravenous GABA 0.1-1 mg/kg has been shown to induce anxiety in a dose-dependent manner.
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.
ActivFulvic
Anticoagulant/Antiplatelet Drugs
Theoretically, taking fulvic acid may decrease the effectiveness of anticoagulant and antiplatelet drugs.
In vitro evidence shows that fulvic acid, formed from the oxidation and polymerization of protocatechuic acid, can shorten prothrombin time in human plasma, increasing the risk of clot formation.
Immunosuppressants
Theoretically, taking fulvic acid might decrease the effects of immunosuppressive therapy.
Animal research shows that fulvic acid stimulates immune function.
Thyroid Hormone
Theoretically, taking fulvic acid with thyroid hormone therapy might interfere with the ability to normalize thyroid function.
Animal research shows that fulvic acid increases the plasma level of thyroid-stimulating hormone (TSH) and decreases the thyroxine (T4):triiodothyronine (T3) ratio.
Vitamin C
Alkylating Agents
Theoretically, antioxidant effects of vitamin C might reduce the effectiveness of alkylating agents.
The use of antioxidants like vitamin C during chemotherapy is controversial. There is concern that antioxidants could reduce the activity of chemotherapy drugs that generate free radicals, such as cyclophosphamide, chlorambucil, carmustine, busulfan, and thiotepa. In contrast, some researchers theorize that antioxidants might make chemotherapy more effective by reducing oxidative stress that could interfere with apoptosis (cell death) of cancer cells. More evidence is needed to determine what effect, if any, antioxidants such as vitamin C have on chemotherapy.
Aluminum
Vitamin C can increase the amount of aluminum absorbed from aluminum compounds.
Research in animals and humans shows that vitamin C increases aluminum absorption, theoretically by chelating aluminum and keeping it in solution where it is available for absorption. In people with normal renal function, urinary excretion of aluminum will likely increase, making aluminum retention and toxicity unlikely. Patients with renal failure who take aluminum-containing compounds such as phosphate binders should avoid vitamin C supplements in doses above the recommended dietary allowances.
Antitumor Antibiotics
Theoretically, the antioxidant effects of vitamin C might reduce the effectiveness of antitumor antibiotics.
The use of antioxidants like vitamin C during chemotherapy is controversial. There is concern that antioxidants could reduce the activity of chemotherapy drugs which generate free radicals, such as doxorubicin. In contrast, some researchers theorize that antioxidants might make chemotherapy more effective by reducing oxidative stress that could interfere with apoptosis (cell death) of cancer cells. More evidence is needed to determine what effects, if any, antioxidants such as vitamin C have on chemotherapy.
Estrogens
Vitamin C might increase blood levels of estrogens.
Increases in plasma estrogen levels of up to 55% occur under some circumstances when vitamin C is taken concurrently with oral contraceptives or hormone replacement therapy, including topical products. It is suggested that vitamin C prevents oxidation of estrogen in the tissues, regenerates oxidized estrogen, and reduces sulfate conjugation of estrogen in the gut wall. When tissue levels of vitamin C are high, these processes are already maximized and supplemental vitamin C does not have any effect on estrogen levels. Increases in plasma estrogen levels may occur when patients who are deficient in vitamin C take supplements. Monitor these patients for estrogen-related side effects.
Fluphenazine (Prolixin)
Theoretically, vitamin C might decrease levels of fluphenazine.
In one patient there was a clinically significant decrease in fluphenazine levels when vitamin C (500 mg twice daily) was started. The mechanism is not known, and there is no further data to confirm this interaction.
Indinavir (Crixivan)
Vitamin C can modestly reduce indinavir levels.
One pharmacokinetic study shows that taking vitamin C 1 gram orally once daily along with indinavir 800 mg orally three times daily reduces the area under the concentration-time curve of indinavir by 14%. The mechanism of this interaction is unknown, but it is unlikely to be clinically significant in most patients. The effect of higher doses of vitamin C on indinavir levels is unknown.
Levothyroxine (Synthroid, Others)
Vitamin C can increase levothyroxine absorption.
Two clinical studies in adults with poorly controlled hypothyroidism show that swallowing levothyroxine with a glass of water containing vitamin C 500-1000 mg in solution reduces thyroid stimulating hormone (TSH) levels and increases thyroxine (T4) levels when compared with taking levothyroxine alone. This suggests that vitamin C increases the oral absorption of levothyroxine, possibly due to a reduction in pH.
Warfarin (Coumadin)
High-dose vitamin C might reduce the levels and effectiveness of warfarin.
Vitamin C in high doses may cause diarrhea and possibly reduce warfarin absorption. There are reports of two people who took up to 16 grams daily of vitamin C and had a reduction in prothrombin time. Lower doses of 5-10 grams daily can also reduce warfarin absorption. In many cases, this does not seem to be clinically significant. However, a case of warfarin resistance has been reported for a patient who took vitamin C 500 mg twice daily. Cessation of vitamin C supplementation resulted in a rapid increase in international normalized ratio (INR). Tell patients taking warfarin to avoid taking vitamin C in excessively high doses (greater than 10 grams daily). Lower doses may be safe, but the anticoagulation activity of warfarin should be monitored. Patients who are stabilized on warfarin while taking vitamin C should avoid adjusting vitamin C dosage to prevent the possibility of warfarin resistance.
Acetaminophen (Tylenol, Others)
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
A small pharmacokinetic study in healthy volunteers shows that taking high-dose vitamin C (3 grams) 1.5 hours after taking acetaminophen 1 gram slightly increases the apparent half-life of acetaminophen from around 2.3 hours to 3.1 hours. Ascorbic acid competitively inhibits sulfate conjugation of acetaminophen. However, to compensate, elimination of acetaminophen glucuronide and unconjugated acetaminophen increases. This effect is not likely to be clinically significant.
Aspirin
Acidification of the urine by vitamin C might increase aspirin levels.
It has been suggested that acidification of the urine by vitamin C could increase reabsorption of salicylates by the renal tubules, and increase plasma salicylate levels. However, short-term use of up to 6 grams daily of vitamin C does not seem to affect urinary pH or salicylate excretion, suggesting this interaction is not clinically significant.
Choline Magnesium Trisalicylate (Trilisate)
Acidification of the urine by vitamin C might increase choline magnesium trisalicylate levels.
It has been suggested that acidification of the urine by vitamin C could increase reabsorption of salicylates by the renal tubules, and increase plasma salicylate levels. However, short-term use of up to 6 grams daily of vitamin C does not seem to affect urinary pH or salicylate excretion, suggesting this interaction probably is not clinically significant.
Niacin
Vitamin C might decrease the beneficial effects of niacin on high-density lipoprotein (HDL) cholesterol levels.
A combination of niacin and simvastatin (Zocor) effectively raises HDL cholesterol levels in patients with coronary disease and low HDL levels. Clinical research shows that taking a combination of antioxidants (vitamin C, vitamin E, beta-carotene, and selenium) along with niacin and simvastatin (Zocor) attenuates this rise in HDL, specifically the HDL-2 and apolipoprotein A1 fractions, by more than 50% in patients with coronary disease. It is not known whether this adverse effect is due to a single antioxidant such as vitamin C, or to the combination. It also is not known whether it will occur in other patient populations.
Salsalate (Disalcid)
Acidification of the urine by vitamin C might increase salsalate levels.
It has been suggested that acidification of the urine by vitamin C could increase reabsorption of salicylates by the renal tubules, and increase plasma salicylate levels. However, short-term use of up to 6 grams/day vitamin C does not seem to affect urinary pH or salicylate excretion, suggesting this interaction probably is not clinically significant.
Brand information
Manufacturer and brand details for ParaSym+, from the product label.
Zemvelo
See all Zemvelo products- Name
- Zemvelo by Mineralife
- Phone Number
- 800.303.1376
- Web Address
- zemvelo.com
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Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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The Full Monographs Behind ParaSym+’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Gamma-aminobutyric Acid (gaba)
Interacts with 419 drugsGABA is a calming chemical messenger (neurotransmitter) that your body makes on its own, and it is sold as a supplement for stress, anxiety, and sleep. The science behind oral GABA supplemen...
Read the full Gamma-aminobutyric Acid (gaba) monograph → Herb & supplement monographTheanine
Interacts with 565 drugsTheanine (usually L-theanine) is an amino acid found naturally in tea leaves that many people take to feel calmer and less stressed without strong drowsiness. Early research suggests it may...
Read the full Theanine monograph → Herb & supplement monographMagnesium
Interacts with 295 drugsMagnesium is an essential mineral your body needs for muscles, nerves, blood pressure, and many other functions, and supplements are useful for preventing or correcting deficiency. Some othe...
Read the full Magnesium monograph → Herb & supplement monographAshwagandha
Interacts with 1,372 drugsAshwagandha is an Ayurvedic herb most often taken to help with stress, anxiety, and sleep, and some small studies suggest it may help, though the evidence is still limited. It is generally w...
Read the full Ashwagandha monograph → Herb & supplement monographVitamin C
Interacts with 207 drugsVitamin C (ascorbic acid) is an essential nutrient your body needs but cannot make, so you must get it from food or supplements. It's important for immune function, collagen, and acts as an...
Read the full Vitamin C monograph → Herb & supplement monographFulvic Acid
Interacts with 257 drugsFulvic acid is a natural compound formed when plants and microbes break down in soil, and it is sold as a supplement for energy, gut, and overall wellness. Human research is very limited, so...
Read the full Fulvic Acid monograph →Sources & How We Checked
ParaSym+'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 186 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.
Gamma-aminobutyric Acid (gaba) 12 references
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- Gershman RN, Vasilenko MA, Iliushina GG, et al. [Gammalon in the rehabilitation in infantile cerebral palsy]. Pediatr.Akus.Ginekol. 1977;(6):26-7.
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- Loeb, C., Marinari, U. M., Benassi, E., Besio, G., Cottalasso, D., Cupello, A., Maffini, M., Mainardi, P., Pronzato, M. A., and Scotto, P. A. Phosphatidylserine increases in vivo the synaptosomal uptake of exogenous GABA in rats. Exp.Neurol. 1988;99(2):4 PubMed
- Melis, G. B., Paoletti, A. M., Mais, V., and Fioretti, P. Interference of dopamine infusion on gamma-amino butyric acid (GABA)-stimulated prolactin increase. J.Endocrinol.Invest 1980;3(4):445-448.
- Boonstra E, de Kleijn R, Colzato LS, Alkemade A, Forstmann BU, Nieuwenhuis S. Neurotransmitters as food supplements: the effects of GABA on brain and behavior. Front Psychol. 2015 Oct 6;6:1520. doi: 10.3389/fpsyg.2015.01520. eCollection 2015. PubMed
- de Bie TH, Witkamp RF, Balvers MG, Jongsma MA. Effects of ?-aminobutyric acid supplementation on glucose control in adults with prediabetes: A double-blind, randomized, placebo-controlled trial. Am J Clin Nutr 2023;118(3):708-719. PubMed
See these in context on the Gamma-aminobutyric Acid (gaba) monograph →
Theanine 6 references
- Yokogoshi H, Kobayashi M. Hypotensive effect of gamma-glutamylethylamide in spontaneously hypertensive rats. Life Sci 1998;62:1065-8.
- Haskell, C. F., Kennedy, D. O., Milne, A. L., Wesnes, K. A., and Scholey, A. B. The effects of L-theanine, caffeine and their combination on cognition and mood. Biol.Psychol. 2008;77(2):113-122. PubMed
- Yokogoshi, H., Kato, Y., Sagesaka, Y. M., Takihara-Matsuura, T., Kakuda, T., and Takeuchi, N. Reduction effect of theanine on blood pressure and brain 5-hydroxyindoles in spontaneously hypertensive rats. Biosci.Biotechnol.Biochem. 1995;59(4):615-618. PubMed
- Lyon MR, Kapoor MP, Juneja LR. The effects of L-theanine (Suntheanine®) on objective sleep quality in boys with attention deficit hyperactivity disorder (ADHD): a randomized, double-blind, placebo-controlled clinical trial. Altern Med Rev. 2011;16(4):348-
- Hidese S, Ota M, Wakabayashi C, et al. Effects of chronic l-theanine administration in patients with major depressive disorder: an open-label study. Acta Neuropsychiatr 2017;29(2):72-9.
- Tsuchiya T, Honda H, Oikawa M, et al. Oral administration of the amino acids cystine and theanine attenuates the adverse events of S-1 adjuvant chemotherapy in gastrointestinal cancer patients. Int J Clin Oncol 2016;21(6):1085-90. PubMed
Magnesium 82 references
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Ashwagandha 32 references
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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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