Best supplements for low energy in men

The best supplements for low energy in men are the ones that match the cause, and testosterone treatment belongs only to men with symptoms plus low levels confirmed on repeated morning testing. If you feel drained, the real question is whether the problem is sleep, stress, low B12, poor recovery, metabolic disease, or true hypogonadism.

Key takeaways

• Testosterone is not a general energy supplement. According to the Endocrine Society guideline, hypogonadism is diagnosed only in men with symptoms and consistently low morning testosterone, followed by tests to find the cause.^[1]
• Vitamin B12 is essential for DNA synthesis and cellular energy production,^[2] but supplementing it mainly helps men who are actually deficient. In people with deficiency, low-quality evidence shows that high-dose oral B12 normalizes blood levels about as well as injections.^[3]
• Among fatigue supplements, CoQ10 has a meta-analysis of randomized trials showing a modest reduction in fatigue scores.^[4] The evidence for Rhodiola is contradictory and limited by study quality.^[5] The main ashwagandha trial measured strength and recovery in young men doing resistance training.^[6] L-theanine improves short-term alertness mainly when combined with caffeine.^[7]
• Common medical drivers of low energy in men include obstructive sleep apnea, obesity, type 2 diabetes, anemia, and confirmed hypogonadism. In a US analysis from the Wisconsin Sleep Cohort, moderate to severe sleep-disordered breathing was estimated in 10 percent of men ages 30 to 49 and 17 percent of men ages 50 to 70.^[8]
• In a small trial of men with secondary hypogonadism, enclomiphene raised testosterone and sperm counts, while testosterone gel did not consistently raise sperm counts.^[9] The Endocrine Society recommends against starting testosterone therapy in men planning fertility in the near term.^[1]

Why low energy in men happens

Low energy in men usually reflects a mismatch between the energy the body can produce and the load placed on it by stress, sleep debt, illness, or training. At the cellular level, energy depends on ATP production in mitochondria, oxygen delivery by red blood cells, normal nerve signaling, and a working hormone axis linking the brain and testes.

Testosterone and energy are related, but they are not interchangeable. According to the Endocrine Society guideline, hypogonadism should be diagnosed only in men who have symptoms and signs of testosterone deficiency along with unequivocally and consistently low testosterone, not after a single low result.^[1] Low testosterone in men is associated with low sexual desire, erectile dysfunction, and reduced muscle mass and strength.^[10]

Fatigue itself is nonspecific. In the Testosterone Trials, published in 2016 in the New England Journal of Medicine, 790 men aged 65 and older with low testosterone and symptoms used testosterone gel or placebo gel for one year.^[11] Testosterone improved sexual function and slightly improved mood, but it had no significant effect on vitality measured with a fatigue scale.^[11] Sleep apnea, obesity, insulin resistance, B12 deficiency, anemia, depression, overtraining, and medication effects can all feel like “low testosterone” from the inside.

How the main supplements affect energy

Supplements sold for energy act on different pathways, so the right choice depends on the cause of the fatigue.

Testosterone and energy are linked, but testing comes first

Hypogonadism means a testosterone deficiency that causes symptoms and is confirmed on blood tests. The Endocrine Society recommends a fasting morning total testosterone measured with an accurate assay, repeated to confirm a low result, and a free testosterone level by equilibrium dialysis or an accurate formula when total testosterone is near the lower limit of normal or a condition alters sex hormone-binding globulin.^[1] Once deficiency is confirmed, the guideline recommends further evaluation to find its cause.^[1] LH and FSH are central to that step. In primary hypogonadism, testosterone is low and these gonadotropins are usually high because the testes are failing. In secondary hypogonadism, testosterone is low with LH and FSH that are low or inappropriately normal because the brain is not signaling enough, and the testes may still respond to stimulation.

Vitamin B12 supports oxygen delivery and nerve signaling

Vitamin B12 is essential for DNA synthesis and cellular energy production, and deficiency is common, mostly because of low intake of animal foods or poor absorption.^[2] Severe deficiency can cause megaloblastic anemia, numbness, and fatigue. Milder deficiency produces subtle symptoms that often go unrecognized.^[2] A 2018 Cochrane review of three randomized trials with 153 participants found low-quality evidence that oral B12 at 1,000 or 2,000 mcg per day normalized blood B12 levels about as well as intramuscular injections, at lower cost.^[3] None of the included trials measured symptoms or quality of life.^[3]

CoQ10 is part of the mitochondrial energy chain

CoQ10 is a fat-soluble compound in the mitochondrial electron transport chain, the series of reactions that turns food into usable cellular energy. A 2022 meta-analysis in Frontiers in Pharmacology pooled 13 randomized trials with 1,126 participants and found that CoQ10 reduced fatigue scores more than placebo.^[4] The effect was modest, and it was larger with higher daily doses and longer treatment.^[4] The benefit was significant for CoQ10-only products but not for combination formulas, and only one gastrointestinal adverse event was reported among 602 people taking CoQ10.^[4]

Rhodiola and ashwagandha have limited human evidence

Adaptogens are plant extracts studied for their effects on the stress response. A 2012 systematic review in BMC Complementary and Alternative Medicine identified 11 controlled trials of Rhodiola.^[5] Two of six trials on physical fatigue and three of five on mental fatigue reported a benefit, but every study had a high or unclear risk of bias, and the authors judged the evidence contradictory.^[5] For ashwagandha, an 8-week randomized trial in 57 young men new to resistance training found that 300 mg of root extract twice daily produced larger gains in strength and muscle size, less exercise-induced muscle damage, and a larger rise in testosterone than placebo.^[6] That trial did not measure fatigue, so it is most relevant to men whose low energy is really poor recovery from training.

L-theanine with caffeine can sharpen short-term focus

L-theanine is an amino acid found in tea. A 2014 meta-analysis in Nutrition Reviews of 11 placebo-controlled human studies on cognition and mood found moderate improvements in alertness and attention switching during the first two hours when L-theanine was paired with caffeine, and the effect tracked the caffeine dose more closely than the L-theanine dose.^[7] It is a short-term focus aid, not a treatment for anemia, sleep apnea, or hypogonadism.

The table lists doses commonly used in human studies and the problems each supplement does and does not address.

Conditions that often sit behind male fatigue

Obstructive sleep apnea, obesity, vitamin B12 deficiency, anemia, and documented hypogonadism are among the most common medical reasons men feel chronically drained. Supplement studies for fatigue often use small samples, short follow-up, or mixed populations, so a positive supplement study does not show that the product works as well as treating sleep apnea, correcting iron or B12 deficiency, or properly indicated hormone care.

Obstructive sleep apnea. According to a 2013 analysis in the American Journal of Epidemiology based on the Wisconsin Sleep Cohort, moderate to severe sleep-disordered breathing affects an estimated 10 percent of men ages 30 to 49 and 17 percent of men ages 50 to 70, and obesity is a strong cause.^[8] Men often notice loud snoring, witnessed pauses in breathing, morning headaches, dry mouth, and a need for caffeine by midmorning even after a full night in bed.

Obesity and metabolic disease. Excess visceral fat can suppress the hypothalamic pituitary gonadal axis, increase inflammation, worsen sleep quality, and reduce insulin sensitivity. A 2013 meta-analysis in the European Journal of Endocrinology of 24 studies found that weight loss raises testosterone in men with obesity.^[12] A low-calorie diet raised total testosterone by roughly 2.9 nmol/L on average, while bariatric surgery raised it by about 8.7 nmol/L, and gains were larger in men who lost more weight.^[12]

Vitamin B12 deficiency and anemia. B12 deficiency usually comes from low intake of animal foods or poor absorption, so vegetarians and older men with reduced stomach acid are at higher risk.^[2] Pernicious anemia, inflammatory bowel disease, long-term acid suppression, and certain other medications also raise the risk. When deficiency is significant, the fatigue is often paired with shortness of breath on exertion, pale skin, tingling in the feet, or a sore tongue.

Confirmed hypogonadism. Low testosterone can contribute to low energy, but it is not diagnosed by symptoms alone or by one isolated number. According to the Endocrine Society, the diagnosis requires consistent symptoms plus repeatedly low morning testosterone, followed by evaluation of the cause.^[1] LH and FSH show whether the testes are failing or the brain is under-signaling, and that distinction determines treatment.

Symptoms and signals worth noticing

The timing and texture of fatigue often tell you more than the word “tired” does.

• You sleep 7 to 9 hours but still wake up unrefreshed, especially if your partner reports loud snoring, choking sounds, or pauses in breathing.
• You feel a hard energy crash between 1:00 p.m. and 4:00 p.m. most days, not just after a bad night.
• You need more caffeine than you did six months ago just to feel normal by 10:00 a.m.
• Your gym numbers are falling, recovery is slower, and soreness lasts two or three days longer than it used to.
• Your fatigue comes with lower libido, fewer morning erections, reduced motivation, or a drop in confidence and drive.
• You get winded climbing one or two flights of stairs, feel unusually cold, or notice paler skin than usual.
• You have tingling feet, numb fingers, brain fog, or memory lapses along with low energy.
• You feel mentally tired but not physically tired, meaning focus is poor, motivation is low, and you keep making simple mistakes at work.
• Your fatigue started after a medication change, weight gain, a long cut in calories, or a period of poor sleep.
• You feel fine on weekends or vacations but wiped out during high-stress workweeks, which points more toward recovery load than a hormone disease.

Myth vs fact

Myth: If you are tired, your testosterone is probably low

Fact: Fatigue alone is not enough to diagnose hypogonadism. The diagnosis requires symptoms plus repeatedly low morning testosterone, followed by evaluation of the cause.^[1] LH and FSH are part of that evaluation because they distinguish primary from secondary hypogonadism.

Myth: More testosterone always means more energy

Fact: In the Testosterone Trials, testosterone gel improved sexual function and slightly improved mood in older men with low levels, but it did not improve vitality on a fatigue scale.^[11] The Endocrine Society recommends testosterone therapy for men with symptomatic, confirmed deficiency, not as an “optimization” shortcut for men with normal levels.^[1]

Myth: B12 shots are the best male fatigue supplements for every tired man

Fact: B12 replacement makes sense when a deficiency is actually present. A Cochrane review found low-quality evidence that high-dose oral B12 normalizes blood levels about as well as injections in people with deficiency, at lower cost, so the route depends on absorption and preference.^[3]

Myth: Natural supplements are always safe

Fact: Herbal products can interact with medications and vary in content from brand to brand. The Rhodiola trials were too flawed to settle questions of efficacy, and the ashwagandha trial ran only 8 weeks in 57 healthy young men, so these studies do not establish long-term safety in older men or men taking other medications.^{[5] [6]}

Myth: TRT is too dangerous for every man

Fact: In the TRAVERSE trial, published in 2023 in the New England Journal of Medicine, 5,246 men aged 45 to 80 with hypogonadism and existing or high risk of cardiovascular disease were followed for a mean of 33 months, and testosterone therapy was noninferior to placebo for major adverse cardiac events.^[13] The testosterone group did have more atrial fibrillation, acute kidney injury, and pulmonary embolism, so treatment still requires monitoring.^[13] The Endocrine Society also recommends against starting testosterone in men planning fertility in the near term.^[1] For men with secondary hypogonadism who want to protect fertility, enclomiphene raised testosterone and sperm counts in a small randomized trial.^[9]

What to do about low energy in men

Start by trying to identify the bottleneck before buying another bottle.

1. Get the right labs at the right time. If testosterone and energy are both part of the story, get the right labs: a fasting morning testosterone drawn between 07:00 and 11:00, repeated if the result is low or borderline, with free testosterone when total testosterone is near the lower limit of normal.^[1] A fatigue workup often also includes a complete blood count, a metabolic panel, B12, thyroid testing, and vitamin D. When testosterone is low, LH and FSH are needed to classify primary versus secondary hypogonadism.
2. Match the supplement to the problem. If labs show B12 deficiency, correct it, orally or by injection.^[3] For general fatigue, CoQ10 has the most consistent trial evidence of the supplements covered here, though the effect is modest.^[4] Rhodiola evidence is contradictory,^[5] ashwagandha data come mainly from one strength-training trial,^[6] and L-theanine with caffeine helps short-term alertness rather than fatigue from an underlying condition.^[7] None of them substitutes for diagnosing hypogonadism, and neither does a product sold as a “test booster.”
3. Treat documented hypogonadism by its type. Low testosterone with high LH and FSH points to primary hypogonadism, where the testes cannot respond and testosterone therapy is the usual treatment. Low testosterone with low or inappropriately normal LH and FSH points to secondary or functional hypogonadism, where the testes may still respond. The Endocrine Society recommends against starting testosterone therapy in men planning fertility in the near term.^[1] In a small randomized trial of men with secondary hypogonadism, enclomiphene raised testosterone, LH, FSH, and sperm counts, while testosterone gel raised testosterone without raising LH and FSH or consistently improving sperm counts.^[9] Weight loss also raises testosterone in men with obesity, but diet-based weight loss produced an average gain of only about 2.9 nmol/L in a meta-analysis,^[12] and many men regain lost weight, so persistent symptoms need structured follow-up.

Veedma offers testing that includes total and free testosterone measured by LC-MS/MS with LH and FSH, or a review of lab results you already have. Its licensed providers interpret the results and, when appropriate, prescribe enclomiphene or the enclomiphene plus tadalafil tablet. Enclomiphene is not an FDA-approved drug; it is prescribed after a provider confirms the diagnosis and is compounded by a licensed U.S. pharmacy.

Bottom line

No single supplement fixes low energy in men. Vitamin B12 helps when deficiency is present, CoQ10 has modest trial evidence for fatigue, the evidence for Rhodiola and ashwagandha is limited, and L-theanine mainly sharpens short-term alertness alongside caffeine. Testosterone treatment belongs in the conversation only when repeated testing confirms symptomatic hypogonadism.

References

1. Bhasin S, Brito JP, Cunningham GR, et al. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2018;103:1715-1744. PMID: 29562364
2. O’Leary F, Samman S. Vitamin B12 in health and disease. Nutrients. 2010;2:299-316. PMID: 22254022
3. Wang H, Li L, Qin LL, et al. Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency. Cochrane Database Syst Rev. 2018;3:CD004655. PMID: 29543316
4. Tsai IC, Hsu CW, Chang CH, et al. Effectiveness of Coenzyme Q10 Supplementation for Reducing Fatigue: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Front Pharmacol. 2022;13:883251. PMID: 36091835
5. Ishaque S, Shamseer L, Bukutu C, et al. Rhodiola rosea for physical and mental fatigue: a systematic review. BMC Complement Altern Med. 2012;12:70. PMID: 22643043
6. Wankhede S, Langade D, Joshi K, et al. Examining the effect of Withania somnifera supplementation on muscle strength and recovery: a randomized controlled trial. J Int Soc Sports Nutr. 2015;12:43. PMID: 26609282
7. Camfield DA, Stough C, Farrimond J, et al. Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis. Nutr Rev. 2014;72:507-22. PMID: 24946991
8. Peppard PE, Young T, Barnet JH, et al. Increased prevalence of sleep-disordered breathing in adults. Am J Epidemiol. 2013;177:1006-14. PMID: 23589584
9. Kaminetsky J, Werner M, Fontenot G, et al. Oral enclomiphene citrate stimulates the endogenous production of testosterone and sperm counts in men with low testosterone: comparison with testosterone gel. J Sex Med. 2013;10:1628-35. PMID: 23530575
10. Barone B, Napolitano L, Abate M, et al. The Role of Testosterone in the Elderly: What Do We Know?. Int J Mol Sci. 2022;23. PMID: 35408895
11. Snyder PJ, Bhasin S, Cunningham GR, et al. Effects of Testosterone Treatment in Older Men. N Engl J Med. 2016;374:611-24. PMID: 26886521
12. Corona G, Rastrelli G, Monami M, et al. Body weight loss reverts obesity-associated hypogonadotropic hypogonadism: a systematic review and meta-analysis. Eur J Endocrinol. 2013;168:829-43. PMID: 23482592
13. Lincoff AM, Bhasin S, Flevaris P, et al. Cardiovascular Safety of Testosterone-Replacement Therapy. N Engl J Med. 2023;389:107-117. PMID: 37326322