Landwell

Most people assume jet lag is a sleep problem, and that the solution is willpower, hydration, and waiting it out. That assumption is why nothing they try actually works.

Jet lag is a biological breakdown. Every time you fly across time zones, three things happen inside your body at once. The molecule your cells use to reset your internal clock gets burned through faster than your body can replace it. The enzyme responsible for destroying what little of that molecule remains ramps up under the stress of flying. And without enough of that molecule circulating, the enzyme that resets your body to local time cannot do its job. Your sleep, your energy, your digestion, and your immunity are all running on the same depleted system.

Melatonin, caffeine, and willpower all work downstream of that breakdown. They address individual symptoms while the upstream system stays dismantled. Landwell works at the source, by replenishing the molecule flying destroys, protecting it from the enzyme that would destroy it again, and activating the reset your body will not complete on its own.

This is not in your head. It is not because you are less fit than you used to be. There is a measurable biological reason why the flight that cost you a day in your 30s costs you three days in your 40s and close to a week in your 60s.

Starting in your 30s, the amount of NAD+ your body produces begins to decline. NAD+ is the molecule at the center of your body's recovery system. By your 50s, your NAD+ levels have been cut roughly in half. At the same time, an enzyme called CD38, which is responsible for destroying circulating NAD+, becomes more aggressive with age and with physiological stress. So just as the fuel your body needs to reset itself is running low, the mechanism consuming it is running high. The enzyme that should reset you to local time (SIRT1) is trying to fire on a fraction of what it needs. The result is a recovery window that expands every year.

Landwell addresses this directly. The 500 mg of NAD+ in each serving replenishes what flying depletes. The 250 mg of quercetin shuts down CD38, the enzyme most responsible for destroying NAD+ in your body. Shutting it down means the recovery molecule actually reaches the systems that need it, even at the age when your body has the hardest time producing enough on its own.

Melatonin sends a signal to the brain's pineal gland that it is nighttime. It does not resynchronize your liver, your gut, your muscles, or any of the peripheral organ clocks that govern your energy, digestion, and immunity. This is why travelers on melatonin often fall asleep at the right hour but still wake at 3 AM, still feel foggy all day, and still feel wrecked on the trip home.

Landwell does not contain melatonin. It works at the cellular substrate level, driving the molecular feedback loop (NAD+ fueling SIRT1, which regulates the core circadian clock genes CLOCK and BMAL1) that governs your body's actual timekeeping machinery. The result covers all of the systems jet lag disrupts, not just sleep onset.

One practical note: a study published in JAMA found melatonin content in leading products ranged from 83% below to 478% above the labeled dose, with 26% containing undisclosed serotonin. Landwell is manufactured in a cGMP-certified facility with third-party testing that verifies every ingredient against the label dose.

The core biological pathway Landwell is built on (NAD+ driving SIRT1, which regulates the circadian clock genes CLOCK and BMAL1) is among the most validated mechanisms in modern chronobiology. It is documented in four landmark papers published in Science (2009) and Cell (2008). It is the pathway Harvard researchers identified as the one your body uses to reset itself after crossing time zones.

The quercetin-CD38 relationship is established in peer-reviewed literature (Camacho-Pereira et al., Cell Metabolism, 2016; Escande et al., 2013). The quercetin-resveratrol pharmacokinetic synergy (quercetin increasing resveratrol absorption by approximately 310%) is documented in Caco-2 cell models (Lund and Pantuso, 2014). A 2002 double-blind, placebo-controlled study found that NADH significantly improved post-flight cognitive performance in travelers after an overnight cross-country flight.

Two capsules daily with water. Which protocol fits you depends on how much time you have before your trip.

If you have 3 to 5 days before you fly (recommended): Start two capsules daily in the days before travel, continue through your flight day, and take them for one to two days after landing. This pre-loading window allows NAD+ reserves and quercetin's protective effects to build before the disruption hits.

If you are leaving soon or decided late: Two capsules the morning of your flight, two on arrival, two the following morning. Less effective than pre-loading, but it covers the acute window without advance planning.

If you travel frequently (four or more trips per year): Two capsules daily as a consistent routine regardless of your schedule. One bottle covers approximately 30 days.

No app required, no light-timing schedule, no meal-timing dependency.

Landwell is safe for the vast majority of people. The ingredients are natural, well-tolerated, and have been studied extensively without safety concerns in healthy adults. This is not a pharmaceutical.

That said, like many natural compounds including grapefruit, green tea, and certain herbs, some ingredients in Landwell can interact with specific prescription medications. If you are on any of the following, check with your doctor first:

• Blood thinners or anticoagulants
• Blood pressure medications
• Immunosuppressants
• Statins or calcium channel blockers
• Quinolone antibiotics

If you are pregnant or breastfeeding, consult your doctor before use.

Both directions. The same cellular mechanism applies regardless of which way you are crossing time zones.

The return trip is consistently the harder leg, and it is the one most travel recovery products quietly ignore. Landwell covers it the same way it covers the outbound.

If you pre-loaded before your trip, those reserves carry through both legs. If you are using the minimum protocol, take two capsules the morning of your return flight and continue for one to two days after landing.

Open the bottle. Take it on your trip. Use the entire bottle if you want.

If your trip is still ruined by jet lag, contact us within 90 days of your order for a full refund, including shipping. We carry the risk, not you.