Adam Health

Erection problems? Listen up.

Erections are blood flow. The trouble starts at night.

Most of the time it's not in your head, and it's not just age. It's blood flow during sleep.

Try NightNOX — $39 first month See how it works
  • Stimulant-free
  • One scoop daily
  • 30-day money-back guarantee
NightNOX tub next to a glass of the deep red drink, with pale pink powder and a scoop
NightNOX · Mixed berries · 30 servings

How it works

Here's what's really going on.

Nearly 7 in 10 men have some trouble getting hard by 70. Here's why, in four steps.

A man asleep in bed, with his blood vessels drawn glowing to show blood flow at night
3–5 a night, while you sleep.

  1. Erections are blood flow.

    And blood flow runs on nitric oxide.

  2. You get 3–5 erections every night.

    Your body does this while you sleep 🌙, mostly in REM sleep. Each one delivers oxygen and nutrients to the penis. It's like a gym session for your penis 💪

  3. They run on nitric oxide too.

    Men make less nitric oxide every decade after 30, and modern life wrecks it. When it drops, the night-time erections fade, and the tissue is starved of oxygen.

One night · 11 PM to 7 AM

Most night-time erections happen in REM sleep. Each one brings oxygen and nutrients in. When nitric oxide is low, they come fewer and smaller, and the tissue goes short of oxygen.

Illustration, not a real recording

Nitric oxide falls. Night-time erections fade. ED rises.

What changes with age

Nitric oxideVS A HEALTHY 20-YEAR-OLD Night-time erectionsMINUTES A NIGHT Men with ED% OF MEN 0% 50% 100% 0 1 h 2 h 3 h 0% 50% 100%20s30s40s50s60s70s 75% less 3 h 13 min 49 min 5% 15% 44% 70%
By your 70s: about 75% less nitric oxide, under an hour of night-time erections a night, and 7 in 10 men with ED. Common, but not inevitable. Sources: nitric oxide, Egashira et al. 1993 via Torregrossa et al. 2011 (two measured ages, dashed between). Night-time erections, Adam Health AndroAge benchmarks. ED, US men, NHANES 2001–02 (Selvin et al. 2007).

  1. Starved tissue stiffens and shrinks.

    And it doesn't take long.

Without night-time erections

About three months without them is enough.

Tissue starved of oxygen stiffens and shrinks. Men can lose up to 1–2 cm (½–¾ inch).

What this means

Your blood flow needs nitric oxide support.

Most of the time, erection problems come down to blood flow. Less nitric oxide means fewer night-time erections and less oxygen for the tissue. It's not in your head, and it's not just age. It's blood flow during sleep.

What to do

Support it, in this order.

  1. Step 1

    Live like it.

    These cost nothing.

    • Sleep 7–9 hours.Most night-time erections happen in REM sleep.
    • Move every day.A walk counts.
    • Don't smoke.
    • Skip antiseptic mouthwash.It kills the mouth bacteria that help you make nitric oxide.
  2. Step 2

    Back it up with NightNOX.

    A 4-in-1 nitric oxide formula that works while you sleep.* One scoop daily. Mixed berries flavor. Stimulant-free. If you use a pill, NightNOX can work alongside it, but check with your doctor first.

    Try NightNOX — $39 first month
    A tub of NightNOX on a white nightstand
    One scoop in 12–16 fl oz of water, 30–60 minutes before bed.
    In one scoop 4-in-1 system

    MakeThe building blocks

    L-citrulline
    4,000 mg
    L-arginine nitrate
    1,500 mg

    PreserveHelps it last

    L-norvaline
    300 mg

    ProtectAntioxidant support

    Glutathione
    250 mg
    Vitamin C
    100 mg
    Folate
    800 mcg

    SupportRelaxation for deeper sleep

    Pine bark extract
    125 mg
    Taurine
    1,500 mg
    L-theanine
    200 mg
  3. Step 3

    See it with the Adam Sensor.

    We invented the world's first erection health tracker. Wear it to bed. It tracks your night-time erections privately at home. Check the app in the morning.

    See if what you're doing is working.

    • Lightweight and wireless
    • iOS and Android
    See your options
    The Insights screen in the Adam app, showing an example AndroAge of 59

    See it for yourself

    You’re 42. But your night-time erections are those of a 59-year-old.

    That’s the kind of thing the Adam Sensor tells you. Wear it to bed, and the app turns your night-time erections into your AndroAge™: the age your night-time erections match. Then watch it move as your sleep, habits and blood flow change.

    Example screen from the Adam app. AndroAge is a wellness score, not a diagnosis.

Your options

Pick how you start.

Start with NightNOX. Add the Sensor if you want to see it working.

NightNOX tub with the drink and powder Start here

NightNOX

Nitric oxide support that works while you sleep.

$39Was $79First month

Then $59 a month. Pause or cancel anytime.

  • One scoop daily, 30 servings
  • Stimulant-free
  • 30-day money-back guarantee
Try NightNOX — $39 first month
Adam Starter Kit: the Adam Sensor, the Adam app and NightNOX See it working

Adam Starter Kit

For men who want to see if it's working.

$275Today

Then NightNOX at $59 a month. Pause or cancel anytime.

  • Adam Sensor
  • The Adam app
  • Your first month of NightNOX
Get the Starter Kit
The Adam Sensor

Adam Sensor

The world's first erection health tracker.

$275One-off

Wear it to bed. Check the app in the morning.

  • Tracks your night-time erections at home
  • Lightweight and wireless
  • iOS and Android
Get the Adam Sensor

30-day money-back guarantee.

Try NightNOX for 30 days. If it's not for you, get your money back.

Try NightNOX — $39 first month
Customer reviews

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FAQ

Common questions.

Does NightNOX work with pills?

It can work alongside them, but check with your doctor first. NightNOX is powerful.

Does it have stimulants?

No. NightNOX is stimulant-free. It's made to work while you sleep, and part of the formula supports relaxation for deeper sleep.

When do I take it?

One scoop in 12–16 fl oz of water, 30–60 minutes before bed. It works while you sleep.

How will I know it's working?

Night-time erections happen while you're asleep, so you can't watch them. That's why we made the Adam Sensor. It tracks your night-time erections at home, so you can see if what you're doing is working. The Starter Kit gives you the Sensor and NightNOX together.

What's in it?
  • Make: L-citrulline 4,000 mg, L-arginine nitrate 1,500 mg
  • Preserve: L-norvaline 300 mg
  • Protect: Glutathione 250 mg, Vitamin C 100 mg, Folate 800 mcg
  • Support: Pine bark extract 125 mg, Taurine 1,500 mg, L-theanine 200 mg

Mixed berries flavor. 30 servings. Stimulant-free.

Can I cancel anytime?

Yes. Your first month is $39. After that it's $59 a month, and you can pause or cancel anytime. NightNOX also comes with a 30-day money-back guarantee.

NightNOX Was $79 $39 first month
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