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Dietary supplement

L-Citrulline 1200 mg Ingredients & Drug Interactions

by Double Wood Supplements

Capsule Category: Amino Acid/protein
Most serious interaction: Moderate
The interaction bottom line Most serious interaction: Moderate

L-Citrulline 1200 mg is a dietary supplement by Double Wood Supplements with 1 active ingredient. 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 1200 mg by Double Wood Supplements

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 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: L-citrulline at 1200 mg per capsule. L-citrulline is an amino acid that your body converts to another amino acid called L-arginine, which plays a role in blood vessel function and circulation.

The capsules also contain gelatin and cellulose as inactive ingredients.

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: sports performance and cardiovascular health.
  • We looked for evidence on: Athletic performance, Cardiovascular disease (CVD), Erectile dysfunction (ED), Heart failure, Muscle strength, blood pressure — and 2 related terms.
  • The strongest evidence on file: L-citrulline is rated "Possibly Effective" for Athletic performance (Natural Medicines).
  • Also on file: L-citrulline is rated "Insufficient Reliable Evidence To Rate" for Cardiovascular disease (CVD), Heart failure, Erectile dysfunction (ED), Muscle strength.

L-citrulline is possibly effective for athletic performance — meaning some evidence supports its use, though more research would strengthen that conclusion. For sarcopenia (age-related muscle loss), the evidence suggests it's probably not effective.

For cardiovascular disease, heart failure, Reye syndrome, and diabetes, we don't have enough reliable evidence in our data to rate whether it works.

The evidence, ingredient by ingredient L-citrulline

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 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • 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 hasn't been fully studied. The most common side effects are gastrointestinal — stomach discomfort and heartburn — and a small number of people with lung disease reported cough.

There isn't enough safety data to know whether L-citrulline is safe during pregnancy or breastfeeding, so it's best to avoid it during these times and talk with your doctor or pharmacist about alternatives if you're pregnant or nursing.

Side effects, ingredient by ingredient L-citrulline

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 1 matched ingredient 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 with your doctor or pharmacist before taking this product if you use blood pressure medications or erectile dysfunction drugs like Viagra or Cialis. Both types can interact with L-citrulline and cause a dangerous drop in blood pressure.

We have data for the single active ingredient in this product, so make sure your provider knows exactly what medications you're on.

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.

L-citrulline may help with athletic performance if that's your goal, but it's not a cure-all for heart or metabolic conditions. The main caution is if you take blood pressure or erectile dysfunction medications — you'll need to clear this with your doctor or pharmacist first to make sure the combination is safe.

For most healthy adults without those medications, it's generally well tolerated.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Jan 22, 2021.

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 1200 mg, straight from the product label.

Brand Double Wood Supplements
Barcode (UPC) X0026EW3KJ
Net contents 210 Capsule(s)
Market status On market
Date entered into DSLD Jan 22, 2021
DSLD ID 241807
Product type Amino Acid/protein
Supplement form Capsule
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Women (not pregnant or lactating), Gluten Free
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 1200 mg by Double Wood Supplements, 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:
2 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
105
UPC/BARCODE
X0026EW3KJ
IngredientAmount% DV
L-Citrulline1200 mg--

Other ingredients: Gelatin, Cellulose

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.
Formula

Directions: L-Citruline is an amino acid commonly taken as a supplement for sports performance and cardiovascular health. When used as a supplement, L-Citrulline is converted by the body into L-Arginine, and supplementing, L-Citrulline has been found to be a more effective method of raising L-Arginine levels in the body than direct L-Arginine supplementation.

L-Citrulline 1200 mg per serving

Suggested/Recommended/Usage/Directions

Suggested Use: As a supplement for circulatory health, take 2 capsules (1 serving) in the morning with food. Repeat this dosage again with lunch and dinner. To promote performance of athletic activity, take 3-4 servings before exercise.

Storage

Storage: Store in a cool, dark place. Do not freeze or expose to moisture or heat above room temperature.

General Statements

L Citrulline Double Wood Supplements New

Seals/Symbols

Proudly made in USA

Formulation

Made with Non-GMO ingredients Gluten free

Supports workout endurance Supports muscle recovery Supports cardiovascular health

FDA Statement of Identity

Dietary Supplement

Precautions

Warning: Consult your physician before use if you are taking any medications. Do not use L-Citrulline if you are pregnant, nursing, or are under 18 years of age.

Discontinue use and consult your doctor immediately if any adverse reactions occur.

Do not take L-Citrulline and operate heavy machinery.

Keep out of reach of children.

Do not exceed 12 capsules per day.

Do not use L-Citrulline if you are pregnant, nursing, or are under 18 years of age.

FDA Disclaimer Statement

These statements have not been evaluate by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

See for yourself

L-Citrulline 1200 mg by Double Wood Supplements label

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

What’s inside

The Ingredients in L-Citrulline 1200 mg by Double Wood Supplements

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size2 Capsule(s) Dosage formCapsule Servings per container105 Amounts shown are per serving.

L-Citrulline

Interacts with
178 drugs
1200 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

Other (inactive) ingredients: Gelatin, Cellulose. These complete the product’s ingredient list but are not active constituents.

Interaction report

L-Citrulline 1200 mg by Double Wood Supplements Drug Interactions

Want to check YOUR meds against L-Citrulline 1200 mg?

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 1200 mg 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 1200 mg, from the product label.

Double Wood Supplements

See all Double Wood Supplements products
Name
Double Wood LLC
Street Address
3510 Scotts Ln Ste 219
City
Philadelphia
State
PA
ZipCode
19129-1573
Web Address
www.doublewoodsupplements.com
Pharmacist Counseling Corner

L-Citrulline 1200 mg by Double Wood Supplements: Common Questions

Does L-Citrulline 1200 mg by Double Wood Supplements interact with any medications?
Yes. Based on its ingredients, L-Citrulline 1200 mg 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 1200 mg contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism 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.
Can I take this with blood pressure medication?
Not without talking to your doctor or pharmacist first. L-citrulline can lower blood pressure, so combining it with blood pressure drugs might drop your pressure too far. Your provider can tell you if it's safe for your specific situation and dose.
Can I take this with erectile dysfunction medications?
Check with your doctor or pharmacist — there's a moderate interaction risk. ED drugs like Viagra and Cialis also widen blood vessels, and together with L-citrulline they could lower your blood pressure too much.
Is L-citrulline safe during pregnancy?
There isn't enough safety data, so it's best to avoid it while you're pregnant. Talk with your doctor or pharmacist about whether this is right for you.
Is L-citrulline safe while breastfeeding?
Safety while breastfeeding is unknown, so avoid taking it. Chat with your doctor or pharmacist if you're nursing and looking for alternatives.
What are the side effects?
Most people tolerate it well, but stomach discomfort and heartburn are the most common complaints. A small number of people with lung disease reported cough.
Does L-citrulline actually help athletic performance?
It's possibly effective — meaning some evidence supports it — but it's not a proven slam dunk. If you're thinking about it for workouts, talk with a trainer or your doctor about realistic expectations.

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

Not sure if L-Citrulline 1200 mg 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 1200 mg label
Sources

Sources & How We Checked

L-Citrulline 1200 mg'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 8 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 →

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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