L-Arginine in MemoHoney: The Main Amino Acid, Read Closely
Quick answerArginine is the amino acid your body turns into nitric oxide, the molecule that lets blood vessels ease open. A MemoHoney capsule prints 400 mg, split across two forms. Studies on blood pressure gave 4 to 24 g daily; the lone memory trial gave 3.3 g. Since arginine can stack with pressure pills, nitrates and ED drugs, check with your doctor first.
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01 of 7- Where it is named
- Printed with its own amount on the Supplement Facts panel
- Amount per capsule
- 400 mg (200 mg base + 200 mg AKG 2:1)
- Doses used in studies
- 1.66 g twice a day in a small memory trial; 4-24 g a day in blood pressure trials (Mone et al., 2022)
- Share of the studied dose
- About 12% of the 3.3 g memory-trial dose
- Also called
- Free-form arginine
Where does L-arginine fit among amino acids?
L-arginine is one of the amino acids your body uses to build protein. Healthy adults make some of their own. The rest comes from everyday food.
In MemoHoney, arginine is the biggest ingredient by weight. It fills two of the seven label lines. You can see it next to the other six on the ingredients page.
Arginine is a standard ingredient in “nitric oxide” and pre-workout products. Its research history is about blood vessels and blood pressure, not memory.
How does arginine lead to nitric oxide?
Nitric oxide is built from arginine. This gas carries a short message to blood vessel walls: loosen up. Relaxed vessels let blood pass more easily.
This is the main idea behind the formula. Citrulline feeds the same pathway by turning into arginine (Schwedhelm et al., 2008). The L-citrulline page covers that step.
Better blood flow in the body is not the same as better memory. No study has shown that this pathway, at this dose, changes how well healthy people remember.
How much arginine is in each MemoHoney capsule?
- 200 mgL-arginine (base)
- 200 mgL-arginine AKG 2:1
- 400 mgBoth lines together
- 3.3 gPer day in the thinking-test trial
The label prints two arginine lines. The first is free-form arginine. The second is arginine bonded to alpha-ketoglutarate, or AKG.
The 200 mg AKG figure includes the carrier, so the real arginine total sits a little below 400 mg. In sports research, trained men took 12 g a day of arginine AKG (Campbell et al., 2006). That is 60 times the AKG in one capsule.
What doses did arginine studies use?
| Study | Who took part | Dose | What was found | Source |
|---|---|---|---|---|
| Dong et al., 2011 | 11 trials, 387 people | 4 to 24 g a day | Top number down roughly 5 mmHg, bottom number roughly 3, versus placebo | (Dong et al., 2011) |
| Mone et al., 2022 | 72 frail, hypertensive older adults | 3.3 g daily in two doses, 4 weeks | Thinking-test scores differed from placebo; small, short, single-blind | (Mone et al., 2022) |
| Campbell et al., 2006 | Trained adult men | 8 weeks at 12 g of arginine AKG daily | Some strength and power measures improved | (Campbell et al., 2006) |
| VINTAGE MI, 2006 | People who had just had a heart attack | Taken for 6 months | No heart benefit; more deaths with arginine; stopped early | (Schulman et al., JAMA 2006) |
Every study above used grams, not milligrams. The blood pressure trials began at 4 g a day (Dong et al., 2011). That is ten times the 400 mg on the MemoHoney label.
A smaller dose is not proof of zero effect. It is simply not the dose anyone tested.
Honest note: the one arginine and thinking trial, read closely
Only one trial we found tested arginine against thinking scores (Mone et al., 2022). Its volunteers were frail, older and already had high blood pressure; there were 72 of them. Some took 1.66 g of L-arginine morning and evening, and the rest took a placebo. A month later, the two groups' test results were not the same.
The trial was small and lasted one month. It was single-blind, meaning only one side was kept unaware of who got what. The people in it were frail and had high blood pressure, unlike most healthy readers.
The daily dose was 3.3 g. MemoHoney gives about 12% of that. No study of MemoHoney itself has been published, and supplements have not been shown to prevent dementia (NCCIH, Supplements for cognitive function).
When to see a doctor instead
If forgetting is disrupting normal days, book a doctor's visit; several causes are treatable (NIA, Memory problems and aging). If confusion or slurred speech comes on suddenly, call 911, since it can be a stroke (CDC, Stroke signs).
Can arginine interact with heart or blood pressure medicine?
Yes, it can. Arginine may lower blood pressure. Combined with medicines that also lower it, the drop may go too far (Mayo Clinic, L-arginine).
Ask your doctor before arginine if you take
- Blood pressure medicines of any kind
- Nitrates such as nitroglycerin, used for chest pain
- ED pills such as sildenafil
- Any heart medicine your cardiologist manages
Memorial Sloan Kettering also notes that combining arginine with blood pressure drugs may not be safe (MSKCC, Arginine). Watch for dizziness, lightheadedness or fainting. Call your doctor if they appear.
More warning signs sit on the side effects page. The who it is for page helps you decide if it fits.
Why does a 2006 heart attack trial still matter?
In the VINTAGE MI study, patients fresh from a heart attack took either arginine or a dummy pill for half a year (Schulman et al., JAMA 2006). Heart function and artery stiffness did not get better on arginine.
Deaths were higher among those on arginine, and the study was halted ahead of schedule.
The doses there dwarfed what a MemoHoney capsule holds. Even so, anyone with a past heart attack should clear any arginine product with their cardiologist.
Which foods naturally contain arginine?
Most protein foods carry arginine. Meat, poultry, fish, eggs and dairy all have some. So do beans, lentils, nuts and seeds.
Most people get arginine from meals every day without thinking about it. A regular serving of a protein food often holds more than one capsule does.
If you follow a low-protein diet for kidney or liver reasons, ask your doctor before adding any amino acid supplement.
What other side effects are linked to arginine?
At gram doses, people report stomach upset, bloating and diarrhea (Mayo Clinic, L-arginine). These effects are tied to amounts much larger than 400 mg.
The bigger concern is blood pressure. Read the full label with your pharmacist, and keep the bottle with your medicine list.
L-arginine questions from searchers
What job does L-arginine do once swallowed?
It goes into proteins and serves as the starting material for nitric oxide, which lets vessel walls ease open.
Is there proof L-arginine helps memory?
Not for healthy people. The only trial we found was small and lasted four weeks; it gave 3.3 g a day to frail older adults with high blood pressure, and their test scores differed from placebo.
How much L-arginine should I take a day?
There is no Daily Value for arginine. Blood pressure trials used 4 to 24 g a day; MemoHoney lists 400 mg, and the label says one capsule a day.
Is L-arginine risky alongside pressure pills?
Ask your doctor first. Arginine may lower blood pressure, and with blood pressure drugs the drop could be too large.
Is L-arginine safe with nitroglycerin or Viagra?
Do not combine them without your doctor's approval. Mayo Clinic warns that arginine with nitroglycerin or sildenafil might make blood pressure drop too low.
Is arginine a good idea for heart attack survivors?
Talk to your cardiologist before you do. In the VINTAGE MI trial, arginine after a heart attack gave no benefit and more deaths, and the trial stopped early.
Which everyday foods carry the most arginine?
Protein foods such as meat, poultry, fish, eggs, dairy, beans, nuts and seeds all contain some. Exact amounts vary from food to food.
What does the AKG in arginine AKG stand for?
It is arginine bonded to alpha-ketoglutarate, a form sold in sports products. On a label, the printed weight includes the AKG part.
Which side effects does L-arginine cause?
At gram doses, people report stomach upset, bloating and diarrhea. Low blood pressure is the bigger concern for anyone on heart medicines.
Is L-arginine the same as L-citrulline?
No. They are separate amino acids, but the body turns citrulline into arginine. Both feed the same nitric oxide pathway, so their blood pressure cautions overlap.
Checked with your doctor? See MemoHoney packs
One capsule a day, 30 per bottle, with every amount printed on the label and no honey in it. Packs start at $49 a bottle on 6 bottles, with a 60-day money-back window. On heart or blood pressure medicine? Check with your doctor first.
