The amount of precum (pre-ejaculate) you produce varies widely from person to person, and there’s no single trick that guarantees a dramatic increase. Some men produce a noticeable drop, others produce enough to soak through clothing, and both are normal. That said, several factors influence how much your body makes, and adjusting them can help you produce closer to your personal maximum.
What Precum Is and Why Volume Varies
Precum is produced by two pea-sized glands called the bulbourethral (or Cowper’s) glands, located just below the prostate. These glands secrete fluid during the arousal and plateau phases of sexual response. The fluid serves two main purposes: it neutralizes residual acidity in the urethra (left over from urine) and provides lubrication.
The size of your Cowper’s glands is largely genetic, which is the biggest reason some men produce very little and others produce a lot. Age also plays a role. Glandular tissue tends to shrink gradually over time, so you may notice less precum as you get older. Hormonal balance, particularly testosterone levels, influences glandular activity as well.
Stay Well Hydrated
This is the simplest and most reliable lever you have. Precum is mostly water, and when your body is dehydrated it redirects fluid toward essential organs like the brain and heart. Reproductive secretions drop as a result. The same principle applies to semen volume overall: fluid intake directly impacts how much your body can produce.
Aim for roughly 2.5 to 3 liters of water per day (about 8 to 10 glasses). If you exercise heavily, live in a hot climate, or drink alcohol or caffeine regularly, you likely need more. You don’t need to overhydrate, just avoid running a consistent deficit. Many men who feel they produce very little precum are simply not drinking enough water throughout the day.
Extend Arousal and Foreplay
Your Cowper’s glands ramp up production during the excitement and plateau phases of arousal, which were first described in the landmark 1966 research by Masters and Johnson. The longer you stay in a state of arousal before orgasm, the more time these glands have to secrete fluid. This is probably the most directly effective approach outside of hydration.
Edging, the practice of building toward orgasm and then backing off repeatedly, keeps you in the plateau phase for an extended period. Many men who edge for 30 minutes or more report significantly more precum than during a quick session. Mental arousal matters too. The more genuinely turned on you are (not just physically stimulated but psychologically engaged), the stronger the signal to your glands.
Supplements: What the Evidence Actually Shows
Online forums frequently recommend a stack of supplements for increasing precum and semen volume. Here’s what the science actually supports:
- Zinc: This mineral plays a role in testosterone balance and sperm quality, which can indirectly support healthy glandular function. Most men get enough from a balanced diet (red meat, shellfish, nuts, seeds), but if your intake is low, a supplement in the 15 to 30 mg range may help.
- Lecithin: Widely recommended in online communities for increasing fluid volume. However, there is no scientific evidence that lecithin supplements affect the amount of semen or pre-ejaculate you produce. Some men swear by it anecdotally, but clinical research simply hasn’t backed this up.
- Pygeum: An extract from the bark of the African cherry tree, traditionally used for prostate health. Research shows it has anti-inflammatory properties and can improve prostatic secretion in men with enlarged prostates. Some men report increased precum when taking pygeum, and the mechanism is plausible since it supports glandular secretory function. Typical doses range from 100 to 200 mg daily of a standardized extract.
None of these are guaranteed to work for every person, and individual results vary considerably. If you want to experiment, give any supplement at least 4 to 6 weeks before judging its effect.
Other Factors That Help
Regular exercise, particularly resistance training, supports healthy testosterone levels, which in turn influence glandular output. Even moderate activity like brisk walking improves blood flow to the pelvic region, which matters for all aspects of sexual response including glandular secretion.
Frequency of ejaculation also plays a role. If you ejaculate multiple times a day, your body may not fully replenish fluids between sessions. Spacing sessions out by 2 to 3 days gives your glands time to build up their reserves. Conversely, very long periods of abstinence don’t necessarily increase precum, because the Cowper’s glands don’t store fluid the same way the seminal vesicles do. They produce in real time during arousal.
Sleep quality matters more than most people realize. Testosterone production peaks during deep sleep, and chronic sleep deprivation suppresses it. Getting 7 to 9 hours consistently supports the hormonal environment your glands need to function optimally.
A Note on Sperm in Precum
If part of your interest in precum relates to sexual practices or contraception, it’s worth knowing what the fluid actually contains. A 2024 pilot study analyzed 70 pre-ejaculate samples from 24 men and found sperm in only about 13% of samples. Even when sperm was present, the concentrations were usually too low to pose significant pregnancy risk. Motile sperm were typically absent or found inconsistently. That said, 25% of participants did have at least one sample containing sperm, so precum is not reliably sperm-free for every person or every encounter.