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Acai Berry (1)
Acetyl-L-Carnitine Supplements (11)
Alginate Supplements (For Reflux) (4)
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L-Arginine Supplements (23)
L-Citrulline Supplements (2)
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Zinc Supplements, Lozenges, and Melts Review (26)
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L-Arginine Supplements

L-Arginine Caution

June 25, 2024
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Be aware that L-arginine can cause irritation and inflammation of the esophagus and mouth based on the type of product used and how it is taken. Learn how to avoid this in the ConsumerTips section of our L-Arginine Review, which includes our Top Picks for L-arginine.

Arginine for Libido, Mood?

May 21, 2024
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Did taking L-arginine improve sexual function or mood in women with depression? Find out what a recent study showed in the What It Does section of our L-Arginine Supplements Review, which includes our Top Picks.

L-Arginine & Blood Pressure

November 28, 2023
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Find out why L-arginine should be used cautiously if you are taking medication that reduces blood pressure (including medications for ED) in the Concerns and Cautions section of our L-Arginine Supplements Review.

Learn about other supplements that can affect blood pressure.

Arginine & Cold Sores

September 08, 2023
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Can arginine supplementation trigger cold sore outbreaks? Find out what research suggests in the Concerns and Cautions section of our Arginine Supplements Review.

Also see: Can any vitamins or minerals help prevent or reduce canker sores or cold sores?

Arginine Safety?

September 01, 2023
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Are there safety concerns with taking L-arginine? There are with high doses, capsules, and if you’ve had a heart attack. Learn more in the Concerns and Cautions section of our Arginine Supplements Review. Also see our Top Picks among arginine products.

Throat Injury From L-Arginine

October 11, 2022
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Be aware that L-arginine capsules may cause esophageal injury, as shown in a recent case. Get the details, as well as tips for avoiding this, in the Concerns and Cautions section of our L-Arginine Supplements Review.

Also see our CL Answer 6 Tips to Avoid Getting a Pill Stuck in Your Throat.

Does Arginine Improve Blood Flow?

July 22, 2022
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L-arginine is often promoted to improve blood flow to muscle tissue, and so is L-citrulline (which is converted to L-arginine in the body). But a recent study adds more evidence that this is often not the case. See the details in the What It Does section our L-Arginine Product Review.

Citrulline for Heart Health?

July 12, 2022
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Does supplementing with citrulline reduce blood pressure and improve heart function in people with heart failure? Find out in the Citrulline section of our L-Arginine Supplements Review (citrulline is converted to L-arginine in the body).

Arginine for Mild Cognitive Impairment?

April 15, 2022
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Can supplementing with L-arginine help elderly people with mild cognitive impairment (MCI)? Find out what a recent study showed in the What It Does section of our L-Arginine Supplements Review.

Also see our CL Answer about other supplements for Memory and Cognition.

Citrulline for Strength?

September 13, 2021
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Find out if citrulline supplementation improved muscle strength or endurance in older people in recent study. (This information is in the Citrulline section of our L-Arginine Supplements Review, as citrulline is converted to arginine in the body and it is often sold in combination with arginine).

L-Arginine for COVID?

September 13, 2021
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Did L-arginine supplementation help people with severe COVID-related pneumonia? See what a new study found in the What It Does section of our L-Arginine Supplements Review.

Also see: Do any supplements help with the coronavirus (COVID-19)?

Pill-Induced Esophagitis

October 18, 2019
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Several cases of esophagitis have been reported from taking supplements, including a recent case involving l-arginine capsules. For details, including tips on how to safely take pills, see the Concerns and Cautions section of the L-Arginine Supplements Review. Also see our Top Picks for L-Arginine.

Arginine for Men?

July 22, 2019
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Does daily arginine supplementation enhance the effect of a popular prescription medication for men? See what a recent study found in the What It Does section of the L-Arginine Supplements Review. Also see our Top Picks for arginine.

Citrulline and Exercise

August 13, 2018
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Several studies have evaluated citrulline (which the body converts to arginine) for enhancing athletic performance. Find out if it helps or not in the Citrulline section of the L-Arginine Review. Also, find out if L-arginine, itself, can help.

Can L-Arginine Cause Pancreatitis?

April 30, 2018
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Although uncommon, there have been reports of acute pancreatitis occurring in conjunction with L-arginine use. Get the details and learn about other possible side effects of arginine in the Concerns and Cautions section of the L-arginine Supplements Review.

L-Arginine for Workouts?

March 16, 2018
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A recent study assessed whether taking L-Arginine before a high-intensity workout decreased muscle soreness after the workout. Get the results and more details in the Exercise Endurance and Recovery section of the L-Arginine Supplements Review. (Also see our Top Picks among products).

Citrulline for Improving Exercise?

December 01, 2017
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Citrulline, a compound which is converted to arginine in the body, is often added to workout supplements to improve exercise performance. But does it really help? See what a new study found in the "What It Does" section of the L-Arginine Supplements Review >> (Also see our Top Picks among L-arginine supplements.)