Citrulline Complex Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Citrulline Complex 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
Citrulline Complex is a dietary supplement by GNC Pro Performance with 2 active ingredients. Its ingredients are commonly taken for muscle building and recovery, increasing daily protein intake, weight management.Based on those ingredients, 231 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are L-Citrulline, hydrolyzed Whey Peptide Complex. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Citrulline Complex by GNC Pro Performance
Ask about any prescription or over-the-counter medication and we check it for interactions with Citrulline Complex by GNC Pro Performance — 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 Citrulline Complex by GNC Pro Performance
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
This product contains 2 active ingredients: hydrolyzed whey peptide complex and a micro-peptide L-citrulline blend. Whey protein is a complete protein derived from dairy that's used to support muscle and athletic performance.
L-citrulline is an amino acid that your body converts to arginine, which plays a role in blood vessel function and circulation. The tablet also contains inactive ingredients—cellulose, calcium carbonate, stearic acid, magnesium stearate, titanium dioxide, riboflavin, natural vanilla mint flavor, stevia leaf extract, and carmine—which serve as binders, fillers, and flavoring.
Does it work?
Moderate evidence
For athletic performance, whey protein is rated possibly effective, as is L-citrulline. That means there's some clinical evidence they may help, but it's not yet strong or complete.
For other uses, the evidence is thinner: whey shows possibly ineffective ratings for osteoporosis and COPD, and insufficient evidence exists for cognitive decline or HIV-related wasting. L-citrulline has insufficient evidence for heart health, heart failure, diabetes, and Reye syndrome.
If you're considering this product for athletic support, talk with your doctor or trainer about whether the evidence fits your goals.
How safe is it?
Well-documented data
Whey protein is generally well tolerated in healthy adults when used as directed, though concentrated supplement forms are not extensively studied—check with your doctor if you have concerns. The most common side effects are dose-related and include acne, bloating, cramps, diarrhea, fatigue, headache, nausea, reflux, reduced appetite, and thirst.
Whey has been linked to acne onset or worsening in teens and young adults; stopping the supplement often clears the lesions. L-citrulline is also generally well tolerated, but long-term safety isn't fully established.
Common side effects are gastrointestinal discomfort and heartburn. For pregnancy, the safety data for L-citrulline is insufficient—the facts advise avoiding it during pregnancy and while breastfeeding.
Whey protein as food is likely fine, but high-dose supplements aren't well studied in pregnancy or lactation; talk with your doctor or pharmacist for personalized guidance.
Meds to double-check
Major interaction found
Before taking this product, check with your doctor or pharmacist if you take levodopa (a Major interaction concern with the whey peptide), antihypertensive drugs or erectile dysfunction medications (Moderate with L-citrulline), or any quinolone, tetracycline, or bisphosphonate medications (Moderate with the whey peptide). Timing adjustments may help, but your healthcare provider needs to weigh your specific situation.
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.
GNC Pro Performance Citrulline Complex may appeal to athletes looking to support performance, since both whey and L-citrulline are possibly effective for that purpose. However, if you take levodopa (Parkinson's medication), antibiotics, bone medications, blood pressure drugs, or erectile dysfunction medications, you'll need to clear this with your doctor or pharmacist first because of documented interactions.
Pregnant or breastfeeding folks should discuss it with their own healthcare provider before starting. It's generally well tolerated, but watch for acne, digestive upset, and heartburn.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Nov 21, 2016.
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 Citrulline Complex, straight from the product label.
| Brand | GNC Pro Performance |
|---|---|
| Barcode (UPC) | 048107154028 |
| Net contents | 60 Tablet(s) |
| Market status | On market |
| Date entered into DSLD | Nov 21, 2016 |
| DSLD ID | 66898 |
| Product type | Amino Acid/protein |
| Supplement form | Tablet Or Pill |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free, Sugar 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 Citrulline Complex by GNC Pro Performance, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| hydrolyzed Whey Peptide Complex | 100 mg | -- |
| Micro-Peptide Citrulline Complex: | 0 NP | -- |
| L-Citrulline | 1600 mg | -- |
Other ingredients: Cellulose, Calcium Carbonate, Stearic Acid, Magnesium Stearate, Titanium Dioxide, Riboflavin, natural Vanilla Mint flavor, Stevia leaf extract, Carmine
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.
General Statements
Actual size
Conforms to USP <2091> for weight. Meets USP <2040> disintegration.
Fuels N.O. production needed for muscle pumps Supports muscle protein synthesis
Precautions
Keep out of reach of children.
Contains: Milk.
Warning: Consult your physician prior to using this product if you are pregnant, nursing, taking medication, or have a medical condition.
Discontinue use two weeks prior to surgery.
Storage
Store in a cool, dry place.
FDA Statement of Identity
Dietary Supplement
Formula
Rapid-absorbing 1700mg micro-peptide complex
Contains: Milk.
General
CODE 986212 CQG
Suggested/Recommended/Usage/Directions
Directions: As a dietary supplement, on workout days, take 1-2 servings prior to workout. On rest days, take 1-2 servings in the morning.
Seals/Symbols
Gf Gluten free
Formulation
No sugar, no artificial colors, no artificial flavors, sodium free, no wheat, gluten free, no soy, yeast free.
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.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Citrulline Complex by GNC Pro Performance 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 Citrulline Complex by GNC Pro Performance
These are the 2 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 Tablet(s) Dosage formTablet Or Pill 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.
Micro-Peptide Citrulline Complex:
Other (inactive) ingredients: Cellulose, Calcium Carbonate, Stearic Acid, Magnesium Stearate, Titanium Dioxide, Riboflavin, Natural Vanilla Mint flavor, Stevia leaf extract, Carmine. These complete the product’s ingredient list but are not active constituents.
Citrulline Complex by GNC Pro Performance Drug Interactions
HelloPharmacist Interaction Report
GNC Pro Performance Citrulline Complex interacts with medications through its hydrolyzed whey peptide and L-citrulline content.
The most serious interaction is a Major concern: whey protein may decrease levodopa (a Parkinson's medication) absorption and worsen tremor, rigidity, and on-off symptoms.
Read the full breakdown — every affected drug type, severity by severity
The whey peptide also has Moderate interactions with several antibiotics. It can reduce how well your body absorbs quinolone antibiotics (like levofloxacin) and tetracycline antibiotics (like doxycycline) — to prevent this, take these antibiotics at least 2 hours before or 4–6 hours after the supplement.
Whey protein may also interfere with bisphosphonates (bone-loss medications) by binding them in your gut; take bisphosphonates at least 30 minutes before this product, ideally at a different time of day.
L-citrulline carries Moderate interactions with blood pressure medications and erectile dysfunction drugs (phosphodiesterase-5 inhibitors like sildenafil). Both can lower blood pressure, so combined use might cause excessive blood pressure drop.
Altogether, these interactions span 231 individual medications. Run your complete medication list through the checker on this page before starting.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Citrulline Complex?
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 Citrulline Complex interact with 231 drugs. Click any drug to see the details.
2 of the 2 ingredients in Citrulline Complex interact with drugs. Each result below shows which ingredient is responsible. L-Citrulline hydrolyzed Whey Peptide Complex
Benserazide, LevodopaMadopar, Prolopa
How Benserazide, Levodopa interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
Hydrolyzed Whey Peptide ComplexLevodopa Major
Interaction Summary
Theoretically, whey protein might decrease levodopa absorption.
Read the full Hydrolyzed Whey Peptide Complex + Benserazide, Levodopa interactionCarbidopa, LevodopaDhivy, Rytary, Sinemet, Sinemet CR
How Carbidopa, Levodopa interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
Hydrolyzed Whey Peptide ComplexLevodopa Major
Interaction Summary
Theoretically, whey protein might decrease levodopa absorption.
Read the full Hydrolyzed Whey Peptide Complex + Carbidopa, Levodopa interactionCarbidopa, Levodopa, EntacaponeStalevo
How Carbidopa, Levodopa, Entacapone interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
Hydrolyzed Whey Peptide ComplexLevodopa Major
Interaction Summary
Theoretically, whey protein might decrease levodopa absorption.
Read the full Hydrolyzed Whey Peptide Complex + Carbidopa, Levodopa, Entacapone interactionLevodopaInbrija, Larodopa
How Levodopa interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
Hydrolyzed Whey Peptide ComplexLevodopa Major
Interaction Summary
Theoretically, whey protein might decrease levodopa absorption.
Read the full Hydrolyzed Whey Peptide Complex + Levodopa interactionLevodopa, CarbidopaDuodopa
How Levodopa, Carbidopa interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
Hydrolyzed Whey Peptide ComplexLevodopa Major
Interaction Summary
Theoretically, whey protein might decrease levodopa absorption.
Read the full Hydrolyzed Whey Peptide Complex + Levodopa, Carbidopa interactionAcebutololRhotral, Sectral
How Acebutolol interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Acebutolol interactionAcetazolamideAk-Zol, Diamox
How Acetazolamide interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Acetazolamide interactionAlendronateBinosto, Fosamax
How Alendronate interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
Hydrolyzed Whey Peptide ComplexBisphosphonates Moderate
Interaction Summary
Theoretically, whey protein might reduce the absorption of bisphosphonates.
Read the full Hydrolyzed Whey Peptide Complex + Alendronate interactionAlendronate Sodium
How Alendronate Sodium interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
Hydrolyzed Whey Peptide ComplexBisphosphonates Moderate
Interaction Summary
Theoretically, whey protein might reduce the absorption of bisphosphonates.
Read the full Hydrolyzed Whey Peptide Complex + Alendronate Sodium interactionAlendronate Sodium, CholecalciferolFosamax Plus D
How Alendronate Sodium, Cholecalciferol interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
Hydrolyzed Whey Peptide ComplexBisphosphonates Moderate
Interaction Summary
Theoretically, whey protein might reduce the absorption of bisphosphonates.
Read the full Hydrolyzed Whey Peptide Complex + Alendronate Sodium, Cholecalciferol interactionAliskirenTekturna
How Aliskiren interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Aliskiren interactionAmbrisentanLetairis, Volibris
How Ambrisentan interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Ambrisentan interactionAmilorideAmilamont, Midamor
How Amiloride interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amiloride interactionAmiloride, HydrochlorothiazideAmil-Co, Amilzide, Moduret 25, Moduretic
How Amiloride, Hydrochlorothiazide interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amiloride, Hydrochlorothiazide interactionAmlodipineNorliqva
How Amlodipine interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amlodipine interactionAmlodipine BenzoateKaterzia
How Amlodipine Benzoate interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amlodipine Benzoate interactionAmlodipine BesilateIstin
How Amlodipine Besilate interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amlodipine Besilate interactionAmlodipine BesylateNorvasc
How Amlodipine Besylate interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amlodipine Besylate interactionAmlodipine Besylate, BenazeprilLotrel
How Amlodipine Besylate, Benazepril interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amlodipine Besylate, Benazepril interactionAmlodipine, CelecoxibConsensi
How Amlodipine, Celecoxib interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Amlodipine, Celecoxib interactionAmmonium ChlorideAmmonium Chloride
How Ammonium Chloride interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Ammonium Chloride interactionAmphotericin, TetracyclineMysteclin-F
How Amphotericin, Tetracycline interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
Hydrolyzed Whey Peptide ComplexTetracycline Antibiotics Moderate
Interaction Summary
Theoretically, whey protein might decrease tetracycline absorption.
Read the full Hydrolyzed Whey Peptide Complex + Amphotericin, Tetracycline interactionAprocitentanTryvio
How Aprocitentan interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Aprocitentan interactionAtenololAtenix, Tenormin
How Atenolol interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Atenolol interactionAtenolol, ChlortalidoneAtenixCo, Tenoret 50, Totaretic
How Atenolol, Chlortalidone interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Atenolol, Chlortalidone interactionAtenolol, ChlorthalidoneTenoretic
How Atenolol, Chlorthalidone interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Atenolol, Chlorthalidone interactionAvanafilStendra
How Avanafil interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullinePhosphodiesterase-5 Inhibitors Moderate
Interaction Summary
Theoretically, concurrent use of phosphodiesterase-5 (PDE-5) inhibitors and L-citrulline might result in additive vasodilation.
Read the full L-citrulline + Avanafil interactionAzilsartanEdarbi
How Azilsartan interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Azilsartan interactionAzilsartan, ChlorthalidoneEdarbyclor
How Azilsartan, Chlorthalidone interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Azilsartan, Chlorthalidone interactionBenazeprilLotensin
How Benazepril interacts with Citrulline Complex — through 1 ingredient. Tap an ingredient for the detail:
L-citrullineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
Read the full L-citrulline + Benazepril interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Citrulline Complex 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.
L-Citrulline
Antihypertensive Drugs
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
L-citrulline is converted to L-arginine, which can increase nitric oxide and cause vasodilation. However, a meta-analysis of 5 small clinical studies suggests that taking L-citrulline 3-6 grams daily for 1-8 weeks does not lower blood pressure when compared with control.
Phosphodiesterase-5 Inhibitors
Theoretically, concurrent use of phosphodiesterase-5 (PDE-5) inhibitors and L-citrulline might result in additive vasodilation.
L-citrulline is converted to L-arginine, which can increase nitric oxide and cause vasodilation. Theoretically, taking L-arginine with PDE-5 inhibitors might have additive vasodilatory and hypotensive effects. However, in studies evaluating the combined use of L-arginine and sildenafil for erectile dysfunction, hypotension was not reported.
hydrolyzed Whey Peptide Complex
Levodopa
Theoretically, whey protein might decrease levodopa absorption.
Small clinical studies show that concomitant ingestion of protein or high doses of leucine or isoleucine (100 mg/kg) and levodopa can exacerbate tremor, rigidity, and the "on-off" syndrome in patients with Parkinson disease.
Bisphosphonates
Theoretically, whey protein might reduce the absorption of bisphosphonates.
Whey protein contains minerals such as calcium that bind bisphosphonates in the gut. Advise patients to take bisphosphonates at least 30 minutes before whey protein, but preferably at a different time of day.
Quinolone Antibiotics
Theoretically, whey protein might decrease quinolone absorption.
Whey protein contains minerals, such as calcium, that can bind to quinolones in the gut. To avoid this interaction, advise patients to take oral quinolones at least 2 hours before or 4-6 hours after whey protein.
Tetracycline Antibiotics
Theoretically, whey protein might decrease tetracycline absorption.
Whey protein contains minerals, such as calcium, that bind to tetracyclines in the gut. To avoid this interaction, advise patients to take oral tetracyclines at least 2 hours before or 4-6 hours after whey protein.
Brand information
Manufacturer and brand details for Citrulline Complex, from the product label.
GNC Pro Performance
See all GNC Pro Performance products- Name
- General Nutrition Corp.
- City
- Pittsburgh
- State
- PA
- ZipCode
- 15222
- Phone Number
- 1-888-462-2548
- Web Address
- www.gnc.com
Citrulline Complex by GNC Pro Performance: Common Questions
Does Citrulline Complex by GNC Pro Performance interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Can I take this if I'm pregnant or breastfeeding?
What are the most common side effects?
Will this help me build muscle or improve athletic performance?
Can I take this with my Parkinson's medication (levodopa)?
What's the difference between the whey peptide and L-citrulline in this product?
Will this lower my blood pressure?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Citrulline Complex 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 Citrulline Complex’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Whey Protein
Interacts with 53 drugsWhey protein is a high-quality, complete protein made from cow's milk that can help people meet protein needs and support muscle growth when combined with exercise. It is generally safe for...
Read the full Whey Protein monograph → Herb & supplement monographL-citrulline
Interacts with 178 drugsL-citrulline is an amino acid that the body turns into L-arginine to help make nitric oxide, which relaxes blood vessels and may improve blood flow. It is popular for exercise performance an...
Read the full L-citrulline monograph →Sources & How We Checked
Citrulline Complex'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 33 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.
Whey Protein 25 references
- Martindale W. Martindale the Extra Pharmacopoeia. Pharmaceutical Press, 1999.
- Maton PN, Burton ME. Antacids revisited: a review of their clinical pharmacology and recommended therapeutic use. Drugs 1999;57:855-70.
- Bell SJ. Whey protein concentrates with and without immunoglobulins: a review. J Med Food 2000;3:1-13. PubMed
- Nutt JG, Woodward WR, Hammerstad JP, et al. The "on-off" phenomenon in Parkinson's disease. Relation to levodopa absorption and transport. N Engl J Med 1984;310:483-8. PubMed
- Baruzzi A, Contin M, Riva R, et al. Influence of meal ingestion time on pharmacokinetics of orally administered levodopa in parkinsonian patients. Clin Neuropharmacol 1987;10:527-37. PubMed
- Juncos JL, Fabbrini G, Mouradian MM, et al. Dietary influences on the antiparkinsonian response to levodopa. Arch Neurol 1987;44:1003-5. PubMed
- Eriksson T, Granerus AK, Linde A, et al. "On-off" phenomenon in Parkinson's disease: relationship between dopa and other large neutral amino acids in plasma. Neurology 1988;38:1245-8. PubMed
- Semla TP, Beizer JL, Higbee MD. Geriatric Dosage Handbook. 4th ed. Hudson, OH: Lexicomp, 1998.
- Pletz MW, Petzold P, Allen A, et al. Effect of calcium carbonate on bioavailability of orally administered gemifloxacin. Antimicrob Agents Chemother 2003;47:2158-60.. PubMed
- Peters ML, Leonard M, Licata AA. Role of alendronate and risedronate in preventing and treating osteoporosis. Cleve Clin J Med 2001;68:945-51. PubMed
- Micke, P., Beeh, K. M., and Buhl, R. Effects of long-term supplementation with whey proteins on plasma glutathione levels of HIV-infected patients. Eur.J Nutr 2002;41(1):12-18. PubMed
- Chitapanarux, T., Tienboon, P., Pojchamarnwiputh, S., and Leelarungrayub, D. Open-labeled pilot study of cysteine-rich whey protein isolate supplementation for nonalcoholic steatohepatitis patients. J Gastroenterol.Hepatol. 2009;24(6):1045-1050. PubMed
- Sataloff, R. T., Bittermann, T., Marks, L., Lurie, D., and Hawkshaw, M. The effects of glutathione enhancement on sensorineural hearing loss. Ear Nose Throat J 2010;89(9):422-433.
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