Most studies on beetroot juice and vascular health use around 250 ml (one cup) of fresh juice or a concentrated 70 ml shot containing roughly 400 mg of nitrate. No clinical trial has tested beet juice specifically as a treatment for erectile dysfunction, but the vascular mechanism is well understood, and that dosage range is the best starting point based on available evidence.
How Beet Juice Affects Erections
Beet juice is one of the richest dietary sources of inorganic nitrates. After you drink it, bacteria on your tongue and in your gut convert those nitrates into nitric oxide, a gas your body already produces naturally. Nitric oxide is central to how erections work: it relaxes the smooth muscle inside the sponge-like erectile tissue of the penis, allowing blood vessels to open and the tissue to fill with blood. That trapped blood is what creates and sustains an erection.
This is the same basic pathway that prescription ED medications target. Those drugs don’t create nitric oxide directly. They block the enzyme that breaks it down, keeping levels elevated longer. Beet juice works from the supply side, giving your body more raw material to produce nitric oxide in the first place.
Dosage and Product Differences
The nitrate content of beet juice varies dramatically depending on how it’s prepared. An 8-ounce (240 ml) glass of fresh beetroot juice contains roughly 700 mg of nitrates. Non-concentrated packaged juice drops to around 550 mg per 8-ounce serving. Concentrated beetroot juice can pack up to 2,850 mg in the same volume, which is why concentrated shots are popular in research settings. Beetroot powder delivers the least, around 320 mg per tablespoon.
For vascular benefits, most research uses one of two approaches: a single 250 ml glass of fresh juice, or a small concentrated shot (70 ml) standardized to 400 mg of nitrate. If you’re using store-bought juice, one full cup daily is a reasonable target. If you’re using a concentrated product like Beet-It Sport shots, a single 70 ml serving provides a dose consistent with clinical trials. There’s no established “ED dose” specifically, so these vascular health benchmarks are the closest guide available.
When to Drink It
Timing matters. After you drink beet juice, the nitrates are absorbed through your colon, reaching peak concentration in your blood within about three hours. Those levels stay in a therapeutic range for roughly 10 hours after that. If you’re hoping for a vascular effect in the evening, drinking your juice in the mid-to-late afternoon gives you the best window. Daily consumption over several weeks is more likely to produce consistent results than a single glass before a specific occasion, since the blood pressure and vascular benefits of dietary nitrate appear to build with regular intake.
What the Evidence Actually Shows
It’s worth being direct about what the science does and doesn’t support. Multiple studies confirm that beetroot juice lowers blood pressure, improves blood vessel flexibility, and increases nitric oxide availability. These are all relevant to erectile function, since ED is frequently a vascular problem. Poor blood flow to the penis is the most common cause of erectile difficulty in men over 40.
However, no randomized controlled trial has directly measured whether beet juice improves erection quality or frequency. The connection is logical and mechanistically sound, but it remains indirect. If your ED is primarily caused by restricted blood flow, boosting nitric oxide through dietary nitrate could plausibly help. If the cause is neurological, hormonal, or psychological, beet juice is unlikely to make a meaningful difference on its own.
Risks and Interactions
Beet juice is generally safe at the doses described above, but there are two important cautions.
First, if you take blood pressure medications or nitrate-based heart drugs like nitroglycerin, adding a high-nitrate food can cause your blood pressure to drop too low. This risk increases significantly if you also use prescription ED medications, which amplify the effects of nitric oxide. Combining all three, a PDE5 inhibitor, blood pressure medication, and large amounts of dietary nitrate, could lead to dangerously low blood pressure, dizziness, or fainting. If you take any of these medications, talk to your prescriber before adding concentrated beet juice to your routine.
Second, beet juice is high in oxalates, containing 60 to 70 mg per 100 ml. Drinking 250 ml daily adds a significant amount of oxalate to your diet, and roughly 75% of all kidney stones are made of calcium oxalate. If you have a history of kidney stones, this is a real concern. Even in people without a stone history, high daily oxalate intake can increase urinary oxalate levels noticeably.
Practical Tips for Getting Started
- Fresh juice: One cup (about 250 ml) daily provides roughly 700 mg of nitrate. You can juice raw beets at home or buy cold-pressed versions. Avoid products that have been heat-pasteurized at very high temperatures, as this can reduce nitrate content.
- Concentrated shots: A 70 ml shot standardized to 400 mg of nitrate is convenient and well-studied. These are widely available online and in health food stores.
- Beetroot powder: Delivers the lowest nitrate per serving (around 320 mg per tablespoon). It’s the most convenient option but the least potent.
- Whole beets: Eating cooked or roasted beets provides nitrates too, but in lower and more variable concentrations than juice. Juicing removes fiber and concentrates the nitrate content.
One harmless but sometimes alarming side effect: beet juice turns urine and stool pink or red. This is called beeturia and is completely normal. It happens to about 10 to 14% of people and has no medical significance.