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Dietary supplement

L-Citrulline 3000 with Glycerol Powder Unflavored Ingredients & Drug Interactions

by 5% Core

Powder Category: Other Combinations
Most serious interaction: Moderate
The interaction bottom line Most serious interaction: Moderate

L-Citrulline 3000 with Glycerol Powder Unflavored is a dietary supplement by 5% Core with 2 active ingredients. Its ingredients are commonly taken for exercise performance, muscle soreness and fatigue, blood flow and circulation.Based on those ingredients, 178 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are L-Citrulline. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

HelloPharmacist Scorecard of L-Citrulline 3000 with Glycerol Powder Unflavored by 5% Core

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.

From our pharmacy team — supplement deep dive

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 2 of its 2 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

This powder contains two active ingredients. L-Citrulline is an amino acid that your body converts to another amino acid called L-arginine, which widens blood vessels.

Glycerol (GlycerSize) is a simple sugar alcohol that draws water into the gut and is used for hydration and bowel support. The product contains no inactive filler ingredients—just these two actives in powder form.

Does it work?

Moderate evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: Exercise performance and muscle recovery support.
  • We looked for evidence on: Athletic performance, Muscle strength, Muscle endurance, Exercise recovery.
  • The strongest evidence on file: Glycerol is rated "Possibly Effective" for Athletic performance (Natural Medicines).
  • Also on file: L-citrulline is rated "Possibly Effective" for Athletic performance.
  • Also on file: L-citrulline is rated "Insufficient Reliable Evidence To Rate" for Muscle strength.

L-Citrulline is possibly effective for athletic performance, but the evidence for heart failure, cardiovascular disease, and diabetes is insufficient to rate. It appears possibly ineffective for sarcopenia (age-related muscle loss).

Glycerol is likely effective for constipation and possibly effective for a skin condition called ichthyosis. For athletic performance, the evidence is possibly effective.

It's likely ineffective for stroke and possibly ineffective for meningitis and prematurity.

The evidence, ingredient by ingredient L-citrulline Glycerol

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

L-Citrulline is generally well tolerated in healthy adults, though long-term safety isn't fully studied. The most common side effects are gastrointestinal discomfort and heartburn.

A small number of people with pulmonary hypertension reported cough. Glycerol is well tolerated by mouth and on skin in normal amounts, but large doses can cause stomach upset, bloating, nausea, vomiting, diarrhea, dizziness, and headache, plus dehydration concerns.

There isn't enough safety data on either ingredient during pregnancy or breastfeeding, so these are best avoided if you're pregnant or nursing—talk with your doctor or pharmacist for personalized advice.

Side effects, ingredient by ingredient L-citrulline Glycerol

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 2 matched ingredients can interact with medications — L-citrulline.
  • The most serious interaction on file is rated Moderate.
  • For scale: 178 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Check your exact medications before using this product if you take blood pressure medications (antihypertensives) or erectile dysfunction drugs like sildenafil or tadalafil—both are Moderate-severity interactions with L-Citrulline. Glycerol has no documented interactions in our data.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

This product might help with athletic performance, but you need to be careful if you take blood pressure medications or erectile dysfunction drugs. L-Citrulline can add to the blood-pressure-lowering effect of those medications.

Talk to your pharmacist or doctor before starting, especially if you're on any prescriptions.

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 Jul 24, 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

At a glance

General information

Key facts about L-Citrulline 3000 with Glycerol Powder Unflavored, straight from the product label.

Brand 5% Core
Barcode (UPC) 850006755646
Net contents 234 Gram(s); 8.25 Ounce(s)
Market status On market
Date entered into DSLD Jul 24, 2025
DSLD ID 333963
Product type Other Combinations
Supplement form Powder
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
From the label
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 L-Citrulline 3000 with Glycerol Powder Unflavored by 5% Core, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
4 Capsule(s)
Maximum serving Sizes:
4 Capsule(s)
Servings per container
60
UPC/BARCODE
850006755646
IngredientAmount% DV
L-Citrulline3000 mg--
GlycerSize500 mg--

Tap any ingredient to jump to its full detail below.

Label statements
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.
Suggested/Recommended/Usage/Directions

Directions Mix 1 scoop with water or your favorite beverage and consume once a day.

Shake the container before use, tapping the edge against a hard surface.

Precautions

Warning Not intended for persons under the age of 18. Keep out of reach of children

Consult your health care professional prior to use if you have or suspect a medical condition, are taking prescription drugs or are pregnant or breast feeding.

California's Proposition 65 Warning Warning: Consuming this product can expose you to chemicals including lead, which is known to the state of California to cause birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov/food

The product was produced in a facility that may also process ingredients containing milk, eggs, soy, shellfish, fish, tree nuts, wheat and peanuts.

Storage

Store in a cool, dry place away from sunlight & with lid securely tightened.

Some settling will occur when stored.

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.

Formulation

GMP Good Manufacturing Practice

Unflavored powder No artificial colors

Third party tested Product guarantee

Natural variations in color may occur.

FDA Statement of Identity

Dietary Supplement

Formula

GlycerSize

Brand IP Statement(s)

GlycerSize is the registered trademark of Pinnacle Ingredients Pty Ltd (Australia)

See for yourself

L-Citrulline 3000 with Glycerol Powder Unflavored by 5% Core label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

What’s inside

The Ingredients in L-Citrulline 3000 with Glycerol Powder Unflavored by 5% Core

These are the 2 active ingredients this product is made of. Select any to open its full monograph.

Serving size4 Capsule(s) Dosage formPowder Servings per container60 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.

L-Citrulline

Interacts with
178 drugs
3000 mg per serving

L-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. I...

L-Citrulline monograph & interactions

GlycerSize

No known
interactions
500 mg per serving Form: Glycerol, Powder

Glycerol (glycerin) is a sweet, syrupy compound made naturally in the body and widely used in foods, skin products, and medicines. It is well establis...

GlycerSize monograph & interactions
Interaction report

L-Citrulline 3000 with Glycerol Powder Unflavored by 5% Core Drug Interactions

Want to check YOUR meds against L-Citrulline 3000 with Glycerol Powder Unflavored?

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 checker
178Drugs
178 Moderate

Ingredients driving the most interactions

Each ingredient & the kinds of drugs it affects

For each ingredient in L-Citrulline 3000 with Glycerol Powder Unflavored with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

L-Citrulline2 drug types · 178 drugs

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.

Likelihood Possible Evidence B
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.

Likelihood Possible Evidence D
The maker

Brand information

Manufacturer and brand details for L-Citrulline 3000 with Glycerol Powder Unflavored, from the product label.

5% Core

See all 5% Core products
Name
Rich Piana 5% Nutrition
City
Largo
State
FL
ZipCode
33777
Phone Number
727-202-9088
Web Address
5PercentNutrition.com
Pharmacist Counseling Corner

L-Citrulline 3000 with Glycerol Powder Unflavored by 5% Core: Common Questions

Does L-Citrulline 3000 with Glycerol Powder Unflavored by 5% Core interact with any medications?
Yes. Based on its ingredients, L-Citrulline 3000 with Glycerol Powder Unflavored has a known interaction with 178 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
L-Citrulline 3000 with Glycerol Powder Unflavored contains 2 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
What does L-Citrulline actually do?
Your body converts L-Citrulline into another amino acid that widens your blood vessels and increases blood flow. That's why it's studied for athletic performance—better blood flow can help deliver oxygen and nutrients to working muscles.
What are the most common side effects?
L-Citrulline often causes gastrointestinal discomfort and heartburn. Glycerol in larger amounts can cause bloating, diarrhea, nausea, dizziness, and headache. Both ingredients are generally well tolerated at normal doses.
Is this safe to use while pregnant or breastfeeding?
There isn't enough safety data for either ingredient during pregnancy or breastfeeding. The data advises avoiding both ingredients during these times. Talk with your doctor or pharmacist about whether it's right for your situation.
Will this actually improve my athletic performance?
L-Citrulline is possibly effective for athletic performance based on the evidence we hold, but results vary. Glycerol is also possibly effective for athletic performance, so the combination may offer some benefit—though individual results depend on the person and the activity.
Can I take this if I'm on Viagra or Cialis?
No—you need to talk to your doctor first. L-Citrulline can add to the blood-vessel-relaxing effects of those drugs and cause a dangerous drop in blood pressure. This is a Moderate-severity interaction.

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

Not sure if L-Citrulline 3000 with Glycerol Powder Unflavored is safe with your meds?

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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.

L-Citrulline 3000 with Glycerol Powder Unflavored label
Sources

Sources & How We Checked

L-Citrulline 3000 with Glycerol Powder Unflavored'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.

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 16 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.

L-citrulline 8 references
  1. Cheng JW, Balwin SN. L-arginine in the management of cardiovascular diseases. Ann Pharmacother 2001;35:755-64. PubMed
  2. Schwedhelm E, Maas R, Freese R, et al. Pharmacokinetic and pharmacodynamic properties of oral L-citrulline and L-arginine: impact on nitric oxide metabolism. Br J Clin Pharmacol 2008;65:51-9. PubMed
  3. Romero MJ, Platt DH, Caldwell RB, Caldwell RW. Therapeutic use of citrulline in cardiovascular disease. Cardiovasc Drug Rev 2006;24:275-90. PubMed
  4. Balderas-Munoz K, Castillo-Martínez L, Orea-Tejeda A, et al. Improvement of ventricular function in systolic heart failure patients with oral L-citrulline supplementation. Cardiol J 2012;19:612-7. PubMed
  5. Sharif Kashani B, Tahmaseb Pour P, Malekmohammad M, et al. Oral l-citrulline malate in patients with idiopathic pulmonary arterial hypertension and Eisenmenger Syndrome: a clinical trial. J Cardiol 2014;64:231-5. PubMed
  6. Pérez-Guisado J, Jakeman PM. Citrulline malate enhances athletic anaerobic performance and relieves muscle soreness. J Strength Cond Res 2010;24:1215-22. PubMed
  7. Mirenayat MS, Moradi S, Mohammadi H, Rouhani MH. Effect of L-citrulline supplementation on blood pressure: a systematic review and meta-analysis of clinical trials. Curr Hypertens Rep. 2018;20(11):98. PubMed
  8. Xu Z, Liu C, Liu S, Zhou Z. Comparison of efficacy and safety of daily oral L-arginine and PDE5Is alone or combination in treating erectile dysfunction: A systematic review and meta-analysis of randomised controlled trials. Andrologia. 2021:e14007. PubMed

See these in context on the L-citrulline monograph →

Glycerol 8 references
  1. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  2. Wagner DR. Hyperhydrating with glycerol: implications for athletic performance. J Am Diet Assoc 1999;99:207-12. PubMed
  3. Yu YL, Kumana CR, Lauder IJ, et al. Treatment of acute cortical infarct with intravenous glycerol. A double-blind, placebo-controlled randomized trial. Stroke 1993;24:1119-24. PubMed
  4. Frei A, Cottier C, Wunderlich P, Ludin E. Glycerol and dextran combined in the therapy of acute stroke. A placebo-controlled, double-blind trial with a planned interim analysis. Stroke 1987;18:373-9. PubMed
  5. Balaskas E, Szepietowski JC, Bessis D, Ioannides D, Ponticelli C, Ghienne C, Taberly A, Dupuy P. Randomized, double-blind study with glycerol and paraffin in uremic xerosis. Clin J Am Soc Nephrol. 2011 Apr;6(4):748-52. PubMed
  6. Blanchet-Bardon C, Tadini G, Machado Matos M, Delarue A. Association of glycerol and paraffin in the treatment of ichthyosis in children: an international, multicentric, randomized, controlled, double-blind study. J Eur Acad Dermatol Venereol. 2012 Aug;26 PubMed
  7. Kajita N, Kanamori K, Yamamoto S, Yoshida K. Generalized Urticaria Caused by a Glycerin Enema in an Infant. J Investig Allergol Clin Immunol 2022;32(4):318-319. PubMed
  8. Suzuki R, Fukuyama K, Miyazaki Y, Namiki T. Contact urticaria syndrome and protein contact dermatitis caused by glycerin enema. JAAD Case Reports. 2016;2:108-10. PubMed

See these in context on the Glycerol monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

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.

© 2021 Therapeutic Research Center, LLC

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