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L-Arginine and Blood Pressure Medication: Interactions
L-arginine may lower blood pressure a little, so Memorial Sloan Kettering says additive effects with blood pressure medicine are possible and users should consult a provider. In Stallion Power it is line seven of nine, with an undisclosed amount that cannot exceed about 11.7 mg under the label rule. If you take blood pressure medicine, ask first.
Written by the Stallion Power label deskUpdated · 4 min read
What the sources say
L-arginine may temporarily lower blood pressure. People on blood pressure medicine should talk to a provider first.
Memorial Sloan Kettering notes that arginine lowered blood pressure for a time in a small study of patients with diabetes. It says additive effects with blood pressure medicines are possible (MSK, Arginine). A review of ED trials also reports a possible small blood pressure drop that was not statistically significant (Koolwal 2019, L-arginine and ED). Neither source gives a safe threshold.
The same MSK page warns that, in people who had an acute heart attack, arginine supplements may raise the risk of death. It also says long-term use may worsen peripheral artery disease (MSK, Arginine). That makes a cardiologist's view important for anyone with heart problems.
L-arginine and sildenafil
Readers often ask about L-arginine and sildenafil. Our research notes mention a clinical reference that advises against combining them, but we did not open that source, so we do not quote it. The pages we did read do not say either way (MSK, Arginine) (MedlinePlus, Sildenafil). Ask your pharmacist.
What we can say is firmer. Sildenafil must not be taken with nitrates for chest pain (MedlinePlus, Sildenafil). A supplement is not a safe stand-in for a prescription, and you should not stop or change a prescribed medicine on your own (NIDDK, ED treatment).
How much L-arginine could one gummy hold?
Studies use grams. The ED review says 3 g a day or less was generally ineffective, one trial used 5 g a day for six weeks, and doses up to 9 g a day were generally well tolerated (Koolwal 2019, L-arginine and ED). Stallion Power lists L-arginine in place seven of nine inside an 82 mg blend. Under the descending-order rule (21 CFR 101.36, Supplement Facts), it weighs at most 82 divided by 7, about 11.7 mg. Using the printed caffeine at 5 mg, the ceiling drops to 5 mg.
| Measure | Amount |
|---|---|
| Daily amounts in ED trials that were generally ineffective | 3,000 mg or less |
| One trial dose | 5,000 mg a day for 6 weeks |
| Plain ceiling for place 7 | 11.7 mg per gummy |
| Tighter ceiling using printed caffeine | 5 mg per gummy |
This is arithmetic on a printed label, not a lab result. A real gummy can hold less. Even at the ceiling, the amount is a tiny fraction of trial doses, so the blood pressure data may not apply. That is not proof of no effect, and it is not an all-clear. See the L-arginine page.
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See packsOther blend lines that touch blood pressure
Tribulus
MSK lists additive lowering with blood pressure medicines, though the clinical relevance is unknown (MSK, Tribulus terrestris).
Ashwagandha
NCCIH says it may interact with blood pressure and diabetes medicines (NCCIH, Ashwagandha).
Green tea extract
NCCIH says extract supplements can raise blood pressure and can lower blood levels of nadolol (NCCIH, Green tea).
Caffeine, 5 mg
Too much caffeine can raise blood pressure. FDA cites 400 mg a day as the general limit for most healthy adults (FDA, Caffeine).
Each of these amounts is also undisclosed or small. The point is not alarm. It is that one gummy touches several lines a pharmacist would want to see.
What to ask and do
- Bring the label and your medicine list to a pharmacist.
- Ask about each line: L-arginine, tribulus, ashwagandha, green tea and caffeine.
- Check your blood pressure as your clinician advises.
- Keep taking prescribed medicine. Stop the gummy and call your doctor if you notice dizziness or other reactions.
Read the medicines guide next. Seek emergency care for chest pain or fainting.
Who wrote this01
Written and reviewed by
Pages built from the label, the sales page and linked NIH, FDA, FTC, NIDDK, AHA and peer-reviewed sources.
Last updated . See our editorial standards and how we check reviews. This website is run by Gostallionpower, a Stallion Power U.S. merchant desk, not by the manufacturer or the distributor named on the label. We earn money when you buy through our order links.
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