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Low energy is one of the most common reasons men start taking supplements. Before buying anything, it helps to know that the most common causes are short or poor sleep, too little movement, heavy alcohol use, stress, and treatable conditions such as sleep apnea, anemia, low thyroid function or low testosterone. If fatigue lasts more than a few weeks, get checked.
Our pick for focus
Details and evidence for each are below. We may earn a commission from purchases through these links.
What the research supports
| Supplement | Best for | Evidence |
|---|---|---|
| Creatine monohydrate (3–5 g/day) | Strength, training recovery, muscle in older men | Strong |
| Caffeine | Short-term alertness and exercise performance | Strong (watch timing) |
| Magnesium | Sleep quality if your intake is low | Low to moderate |
| Melatonin (0.5–3 mg) | Jet lag and shifting your sleep time | Moderate for timing, weak for general insomnia |
| Ashwagandha | Stress and sleep quality | Moderate (small trials) |
| L-theanine | Calm focus, often paired with caffeine | Low to moderate |
| Omega-3 fish oil | Heart health; mood evidence is mixed | Moderate for heart markers |
Read more: Creatine after 40 and Zinc, magnesium and vitamin D.
For focus: what about nootropic blends?
“Nootropic” formulas combine ingredients such as bacopa, ginkgo, phosphatidylserine, L-theanine and B vitamins. A few of these have small studies behind them: bacopa, for example, has shown modest memory benefits after 8 to 12 weeks. Blends vary widely, so the label matters more than the brand.
Focus formula
BrainPill
A daily nootropic supplement marketed for memory, focus and mental energy.
- Check each ingredient’s dose against published studies
- Look for stimulants if you are sensitive to caffeine or take them late in the day
- Judge it over at least 8 weeks, the length of most nootropic trials
Better sleep without pills
- Keep a consistent wake-up time, including weekends
- Get outdoor light early in the day
- Stop caffeine at least 8 hours before bed
- Keep the bedroom cool, dark and quiet
- Limit alcohol, which fragments sleep in the second half of the night
Loud snoring, gasping at night or daytime sleepiness can signal sleep apnea, which is common in men and very treatable. It deserves a doctor’s visit, not a supplement.
What is the best supplement for energy for men?
For training energy and strength, creatine monohydrate has the strongest evidence. For day-to-day fatigue, fixing sleep and checking for deficiencies such as low iron or vitamin D matters more than any supplement.
Is magnesium good for sleep?
It may help if your diet is low in magnesium. Glycinate and citrate forms are better absorbed than oxide.
Can I take melatonin every night?
Low doses are generally considered safe for short-term use. It works best for shifting sleep timing, such as jet lag, rather than long-term insomnia.