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How long does it take for L Arginine to work for ED?

How long does it take for l-arginine to work? Depending on your reason for taking l-arginine and which type of amino acid you need, it takes a minimum of 24-hours for the l-arginine to absorb into your body. In some cases, to see the full effects of regular l-arginine treatment, it could take up to three months.

my.clevelandclinic.org - L-Arginine Benefits, Uses & Side Effects - Cleveland Clinic

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Protein in your diet helps your body function. Each cell in your body contains protein. Proteins help your body: Amino acids are molecules within your body that produce proteins when they combine with other molecules. An amino acid chain forms a protein. Proteins are an essential part of what makes humans function because every cell in the human body contains protein. The letter L in front of arginine stands for “levorotatory,” which is a chemistry term that means the amino acid didn’t bond with a protein molecule (free form). This helps providers categorize amino acids based on how similar they are to the amino acids humans produce in their own bodies. The L designates that it easily absorbs into your body because it's most similar to amino acids already in your body. L-arginine is an amino acid that you can find naturally in foods like fish, meat and nuts. L-arginine is semi-essential (conditional), which means that your body can produce the amino acid, but you also need to include some sources of the amino acid in your diet.

Frequently Asked Questions

What are the forms and brand names of l-arginine?

L-arginine is available in two forms: fluid injected inside of your vein through an IV (intravenously) or taken by mouth (capsules or tablets).

The brand name for IV-form l-arginine is R-Gene 10 ®.

There are several types of l-arginine supplements available over the counter. Talk with your healthcare provider before starting l-arginine supplements.

What dosage strengths does l-arginine come in?

Dosage varies for each brand of l-arginine and the specifications are marked on the label. The average dosage of l-arginine is between 6 grams to a maximum of 30 grams per day. The daily dose is normally divided into three smaller doses per day that won’t exceed the maximum dosage. Do not take more than the maximum dosage of l-arginine. Check with your healthcare provider before taking over-the-counter l-arginine supplements to see if they are right for you. If your provider prescribes treatment with l-arginine via an IV, they will administer the correct dosage according to your age, the reason for treatment and other factors.

How should I take l-arginine?

You can take l-arginine by incorporating foods that are high in l-arginine into your diet. Foods that are high in protein are great ways to increase your l-arginine levels. If you aren’t getting enough l-arginine through your diet, your provider might suggest taking over-the-counter l-arginine supplements. You can take l-arginine supplements by mouth, following the dosage on the label of the supplement and the recommendation from your provider. If you need to take l-arginine via IV, your provider will monitor and administer the treatment in a healthcare facility.

How long does it take for l-arginine to work?

Depending on your reason for taking l-arginine and which type of amino acid you need, it takes a minimum of 24-hours for the l-arginine to absorb into your body. In some cases, to see the full effects of regular l-arginine treatment, it could take up to three months.

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What are the side effects of l-arginine?

Side effects are possible with l-arginine treatment and could include:

Bloating.

Diarrhea.

Dizziness.

Nausea or vomiting.

Life-threatening side effects include:

Allergic reaction (hives, itching or rash).

Difficulty breathing or a tight feeling in your chest.

Heart failure.

If you experience any side effects, reach out to your healthcare provider or visit your nearest emergency room immediately.

Are there any serious interactions with l-arginine?

L-arginine interacts with other medicines. Don’t take l-arginine without first talking to your provider about medicines you currently take. L-arginine interacts with the following: Medicine Type ACE inhibitors. Benazepril, enalapril, lisinopril. Alpha-blockers. Doxazosin, prazosin. Angiotensin receptor blockers. Candesartan, irbesartan, losartan, valsartan. Beta-blockers. Atenolol, carvedilol, labetalol, metoprolol. Calcium channel blockers. Amlodipine, diltiazem, nifedipine, verapamil. Nitrates. Isosorbide, nitroglycerin. Propranolol. Hemangeol ®. Vitamins or natural remedies. Fish oil. L-arginine can cause interactions if you have certain health conditions. You shouldn’t take l-arginine if you:

Recently had a heart attack.

Have a guanidinoacetate methyltransferase deficiency.

Are a child under 16 years of age, are pregnant or breastfeeding or are an adult older than 65 years of age without approval from your provider.

Always check with your provider before starting l-arginine supplements or treatment.

Can I take l-arginine if I’m pregnant or breastfeeding?

Don’t take l-arginine supplements if you’re pregnant or breastfeeding (chestfeeding) without first talking with your provider to see if the amino acid is right for you. L-arginine could cause unexpected complications during pregnancy, and there is not enough research to specify whether or not l-arginine supplements pass through breastmilk (chest milk).

What should I tell my healthcare provider before starting l-arginine?

Talk to your healthcare provider about the medicines, vitamins and supplements that you’re currently taking before starting l-arginine. You’ll also want to discuss your health history with your provider, especially if you recently had a heart attack, are pregnant or breastfeeding (chestfeeding) or if you have an underlying medical condition. Your provider will assess your symptoms and let you know if it is safe to start taking l-arginine.

A note from Cleveland Clinic

Always talk with your healthcare provider before starting any new supplements like l-arginine. L-arginine is safe for most adults, especially if you incorporate more protein-forward products into your diet like meat and nuts. If you have any serious reactions to the amino acid, contact your provider or visit the emergency room immediately.

my.clevelandclinic.org - L-Arginine Benefits, Uses & Side Effects - Cleveland Clinic

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