The 7 Best Supplements for Energy in 2026,
According to Nutrition Experts

Vitamin B12 is one of the most talked-about supplements for energy — and for good reason. This essential vitamin plays a critical role in red blood cell formation, nerve function, and DNA synthesis. Most importantly for energy, B12 helps your body convert the food you eat into usable fuel (ATP).

Here’s the catch: B12 deficiency is surprisingly common. Vegans and vegetarians are at high risk since B12 is found almost exclusively in animal products. But even meat-eaters can run low, especially adults over 50 who produce less intrinsic factor (the protein needed to absorb B12 from food), and people taking medications like metformin or certain antacids.

If you are deficient, supplementing with B12 can produce a dramatic improvement in energy levels, mental clarity, and mood. Look for methylcobalamin — the most bioavailable form — rather than the cheaper cyanocobalamin.

Coenzyme Q10 (CoQ10) is a naturally occurring antioxidant found in every cell of your body. Its primary job is to help your mitochondria produce ATP — your body’s fundamental energy currency. Without adequate CoQ10, your cellular power plants can’t run at full capacity.

Here’s the problem: CoQ10 levels naturally decline with age, starting in your 30s. They’re also depleted by statin medications (used for cholesterol), making supplementation especially important for people on statins who often experience muscle fatigue as a side effect.

A 2022 study found that CoQ10 supplementation can significantly reduce fatigue and improve exercise tolerance, particularly in older adults and those with cardiovascular concerns. In 2026, mitochondria-targeting supplements like CoQ10 have become one of the fastest-growing categories in the wellness space — because they address energy at the root cause, not just the surface.

For better absorption, look for ubiquinol (the reduced, active form) rather than ubiquinone, and take it with a fat-containing meal.

Ashwagandha is one of the most well-researched adaptogens in the world, and in 2026 it remains a top pick among nutritionists for sustainable energy and stress resilience. Unlike caffeine or stimulants, ashwagandha doesn’t give you a quick buzz — it works by helping your body adapt to stress more efficiently over time.

It does this primarily by lowering cortisol levels — your body’s main stress hormone. When cortisol is chronically elevated (as it is in most busy, stressed-out Americans), it drains your energy, disrupts sleep, and leaves you feeling wired but exhausted. Ashwagandha helps break that cycle.

A 2021 systematic review found strong evidence that ashwagandha improves symptoms of stress, anxiety, and fatigue. It also showed promise for enhancing sleep quality — which is one of the most powerful natural ways to restore energy. Another key benefit: ashwagandha has been shown to support mitochondrial function, meaning it boosts energy from the inside out.

The most clinically studied form is KSM-66 — a patented root extract with a high concentration of active compounds (withanolides).

Iron is the mineral your red blood cells use to carry oxygen throughout your body. When iron levels are low, your tissues don’t get enough oxygen — and without oxygen, energy production comes to a grinding halt. The result is a type of fatigue that feels heavy, foggy, and persistent no matter how much you sleep.

Iron deficiency is the most common nutritional deficiency in the world, and it disproportionately affects women of reproductive age, pregnant women, vegetarians and vegans, and people who exercise intensely. If you’re chronically tired and none of the other supplements seem to help, getting your iron (and ferritin) levels checked with a simple blood test is a great first step.

Important note: Don’t supplement with iron unless you’ve confirmed a deficiency. Too much iron can actually be harmful. If your levels are low, a healthcare provider can recommend the right dose and form. Ferrous bisglycinate is one of the best-tolerated forms with fewer digestive side effects than ferrous sulfate.

Magnesium is involved in over 300 enzymatic reactions in the body — including the production of ATP, the very molecule that powers everything you do. Yet studies estimate that up to 50% of Americans don’t get enough magnesium from their diets, making it one of the most widespread — and underappreciated — causes of fatigue.

Low magnesium doesn’t just cause tiredness. It can also contribute to muscle cramps, poor sleep, anxiety, headaches, and difficulty concentrating — all of which compound your energy problems. Supplementing with magnesium can improve sleep quality, muscle function, and cellular energy production, especially for people who are deficient.

In 2026, magnesium malate and magnesium glycinate have become the preferred forms for energy support. Magnesium malate combines magnesium with malic acid (found naturally in apples), which plays a direct role in the ATP production cycle inside your mitochondria — making it a particularly smart choice for combating fatigue and muscle weakness.

Rhodiola Rosea is an adaptogenic herb that has been used for centuries in Scandinavia and Russia to combat fatigue and improve physical endurance. In the world of natural energy supplements, it’s one of the most impressive performers when it comes to both mental and physical stamina.

Rhodiola works by balancing key neurotransmitters — including serotonin, dopamine, and norepinephrine — that influence mood, motivation, and alertness. It also helps your body manage the hormonal response to stress, reducing burnout and keeping your energy levels more consistent throughout the day.

Research has shown particularly strong results for people dealing with stress-related burnout. In one study of 118 individuals with burnout syndrome, participants who took 400 mg of rhodiola daily for 12 weeks showed significant improvements in fatigue, stress, and depression symptoms. Another review of 11 studies found that 8 of them showed evidence that rhodiola can enhance physical performance and ease mental fatigue.

Rhodiola is stimulating rather than sedating, so it’s best taken in the morning or early afternoon to avoid interfering with sleep.

Most people associate creatine with bodybuilders and gym-goers — but the research tells a much broader story. Creatine is one of the most well-studied supplements on the planet, and it works by helping your body recycle ATP, the energy molecule that powers essentially every function in your cells.

When you run low on ATP (which happens quickly during both physical and mental exertion), creatine steps in to replenish it faster. This translates to better endurance, quicker recovery, and reduced feelings of fatigue — not just in the gym, but during cognitively demanding work too. Emerging research suggests creatine can also support brain energy metabolism and memory, making it increasingly popular with students and busy professionals.

Creatine is especially beneficial for vegetarians and vegans, who tend to have lower baseline creatine stores since it’s found primarily in red meat. It’s safe for most healthy adults and has one of the strongest safety profiles of any supplement available today.

The most researched and cost-effective form remains creatine monohydrate. No need for fancy, expensive variants — the plain monohydrate works just as well.