Tongkat Ali vs Boron: Which One and Can You Take Both

Tongkat ali vs boron comes down to how much human research stands behind each one. Tongkat ali's trials point toward support for testosterone and lower fatigue in men. Boron's testosterone research is a handful of tiny, short studies with mixed results, and the only placebo-controlled trial we found, in young bodybuilders, saw no effect. Both get sold for the same reasons. Only one has a review of pooled trials behind it.

Boron shows up on a lot of men's supplement labels, often in the same capsule as tongkat ali. It's cheap, it's a mineral you already eat, and the first study to report a testosterone rise from it had eight men in it. So here's the tongkat ali vs boron question answered plainly: what each one is, what the studies tested, the doses they used, and whether anyone has tested them together. (Short version: we couldn't find a single trial that did.)

One thing first. Testosterone is a number. Fire is a life. Neither one replaces sleep, training, sunlight or doing hard things.

What is tongkat ali?

Tongkat ali is the root of Eurycoma longifolia, a shrub from the rainforests of Indonesia and Malaysia. It's traditionally used for energy, strength and vitality in men. Most human research uses a hot-water root extract, not raw root powder.

We wrote a full guide on it, with every study broken down: Tongkat Ali: What It Is, What the Studies Show, and How to Take It.

What is boron?

Boron isn't a plant. It's a trace mineral, and you already get some every day, mostly from food and drinking water. It isn't currently classified as an essential nutrient, but researchers think it plays a part in bone, mineral and hormone metabolism.⁵

It's sold to lifters mostly on one promise: that it raises testosterone. Back in 1994, researchers were already pointing at a wave of athletic supplements selling boron as a way to increase testosterone.⁶ So let's look at what the trials found.

What did the human studies look at?

Tongkat ali

• Testosterone: a 2022 review pooled 5 randomized trials and found higher total testosterone in men taking tongkat ali than in control groups.¹
• Stress hormones and mood: a placebo-controlled trial in 63 moderately stressed men and women tested 200 mg a day for 4 weeks. The tongkat group had better scores on some mood measures (tension, anger, confusion) and a better cortisol-to-testosterone balance than placebo. An extract maker funded it.²
• Fatigue: a double-blind, placebo-controlled trial in 105 men aged 50 to 70 tested 100 or 200 mg a day for 12 weeks. Both tongkat groups had higher total testosterone and lower fatigue scores than placebo. The extract maker funded it.³
• Strength: a 5-week pilot in 25 active adults aged 57 to 72 used 400 mg a day and saw higher testosterone and muscle force. It had no placebo group, so treat it as a hint, not proof.⁴

Boron

• Bodybuilders: 19 male bodybuilders aged 20 to 27 took 2.5 mg of boron a day or a placebo for 7 weeks. Total testosterone, lean mass and strength went up in both groups from training. Boron made no difference to total or free testosterone, lean mass or strength.⁷
• The study behind the hype: 8 healthy men took 10 mg of boron a day for 1 week. Free testosterone (the share not bound up by proteins in the blood) went up, estradiol went down, and some inflammation markers dropped. There was no separate placebo group, just the same 8 men measured before and after. The authors called it the first human report of a free testosterone rise from boron.⁸
• Healthy men, 4 weeks: an earlier study gave healthy men 10 mg of boron a day for 4 weeks. Estradiol went up, the opposite direction from the study above, and testosterone showed a trend upward that didn't reach significance.⁹

That's the core of it. Same dose, two small studies, estradiol moving in opposite directions. The one trial with a placebo group found nothing.

And the reviews. A 2026 critical review of boron and two other trace minerals called boron's human studies modest in size, and concluded the human data aren't enough to justify supplementation.¹⁰ A 2018 review said findings on higher boron intake have been generally mixed.¹¹

One more review is worth knowing because it rated many ingredients side by side. A 2024 review looked at 52 studies on 27 ingredients sold to men for testosterone. It found most of them fail to raise total testosterone compared with placebo. Tongkat ali was one of the few rated "possibly effective" for healthy men. Boron wasn't among those.¹²

Tongkat ali vs boron: side by side

Which one should you pick?

We make a tongkat ali product, so weigh our read with that in mind. But here's the honest version, and every study is linked so you can check us.

• If you want support for testosterone and energy, tongkat ali's research is the closer match. Its trials found higher testosterone and lower fatigue than placebo, including in men aged 50 to 70. Boron's only placebo-controlled trial found no difference.
• If you're training for strength, neither has strong proof. Boron's bodybuilder trial found no gain in lean mass or strength over placebo. Tongkat's strength study is a small pilot with no placebo group.
• If you're curious about boron anyway, start with food. Even a review that's bullish on boron pointed first to people whose diet is light on fruit and vegetables.¹³ Eating more of those is a cheaper fix than a capsule.

Our honest read: tongkat ali's research is promising but small and short. Boron's is smaller and shorter, and the one trial that used a placebo came up empty.

Can you take tongkat ali and boron together?

Plenty of products put them in the same capsule. But we searched PubMed and couldn't find a single human trial that tested tongkat ali and boron together. Every study above tested one on its own. So nobody can tell you how the two act in combination, or what dose of each makes sense side by side.

That matters for blends. If a label lists ten things, you're testing ten things at once, and you'll never know which one did the work. More on reading labels in How to Choose a Tongkat Ali Supplement.

If you still want to try both, here's how we'd think about it:

• Talk to your doctor first, especially if you take any medication or have a health condition.
• Start one at a time. Give one a month before adding the other, so you know what's doing what.
• Stay within the doses the studies used. More is not better when nobody has tested it. For boron, count what's already in any multivitamin you take.

Weighing a different pairing? We covered that too: Tongkat Ali and Fadogia Agrestis.

Is boron safe?

At food levels, it's part of a normal diet. Adults have an upper intake limit of 20 mg a day from all sources.¹³ The trials above stayed at or under 10 mg a day, and none ran longer than 7 weeks. A 2018 review noted that high boron levels have caused cell damage and toxicity in animals and humans.¹¹ So "it's just a mineral" isn't a reason to stack doses.

Tongkat ali has its own gaps: the longest trial above ran 12 weeks, so these trials give no long-term safety data. And it has a liver case report: in 2024, doctors described a man who developed liver injury after starting tongkat ali and got better after stopping.¹⁴ The same rule covers both. Stick to studied doses, buy from brands that test what they sell, and talk to your doctor. More in Tongkat Ali Side Effects.

One tool, not the answer

Nobody is coming to give you your fire back. Here's how to go get it: sleep 7 to 9 hours, lift heavy things, get sunlight early, eat real food and do something hard on purpose. Then, if you want a supplement, pick the one with the research behind it.

If that's tongkat ali, it's the one we make. All Day Fire Tongkat Ali is version one: 400 mg of a 100:1 hot-water root extract per serving, one ingredient, made in small batches by a US manufacturer and tested for heavy metals. The studies above are about tongkat ali and boron, not about our bottle.

Keep reading: Tongkat Ali vs Tribulus, Tongkat Ali Dosage, Does Tongkat Ali Work? An Honest Look at the Evidence.

FAQ

What's the difference between tongkat ali and boron?

Tongkat ali is a root from Indonesia and Malaysia whose human trials found support for testosterone and lower fatigue in men compared with placebo. Boron is a trace mineral found in food and water whose testosterone research is a few tiny, short studies with mixed results.

Can you take tongkat ali and boron together?

Many products combine them, but we couldn't find any human trial that tested the two together. If you want to try both, start one at a time, stay within studied doses, and talk to your doctor first.

Does boron raise testosterone?

The evidence is thin. A 1-week study in 8 men saw higher free testosterone, but it had no separate placebo group. The only placebo-controlled trial we found, in 19 bodybuilders over 7 weeks, saw no effect on total or free testosterone.

How much boron did the studies use?

The trials covered here used 2.5 to 10 mg a day, for 1 to 7 weeks. The upper intake limit for adults is 20 mg a day from all sources, so follow the label and talk to your doctor.

Is boron or tongkat ali better for strength?

Neither has strong proof. Boron's placebo-controlled trial in bodybuilders found no gain in lean mass or strength over placebo. Tongkat ali's strength study was a small pilot with no placebo group.

Sources

1. Leisegang K, et al. Eurycoma longifolia (Jack) Improves Serum Total Testosterone in Men: A Systematic Review and Meta-Analysis of Clinical Trials. Medicina, 2022. PMID 36013514
2. Talbott SM, et al. Effect of Tongkat Ali on stress hormones and psychological mood state in moderately stressed subjects. J Int Soc Sports Nutr, 2013. PMID 23705671
3. Chinnappan SM, et al. Effect of Eurycoma longifolia standardised aqueous root extract-Physta on testosterone levels and quality of life in ageing male subjects. Food Nutr Res, 2021. PMID 34262417
4. Henkel RR, et al. Tongkat Ali as a potential herbal supplement for physically active male and female seniors: a pilot study. Phytother Res, 2014. PMID 23754792
5. Kuru-Yaşar R, Yarat A. The Role of Boron in the Diet and as a Dietary Supplement. Handb Exp Pharmacol, 2026. PMID 42185672
6. Green NR, Ferrando AA. Plasma boron and the effects of boron supplementation in males. Environ Health Perspect, 1994. PMID 7889885
7. Ferrando AA, Green NR. The effect of boron supplementation on lean body mass, plasma testosterone levels, and strength in male bodybuilders. Int J Sport Nutr, 1993. PMID 8508192
8. Naghii MR, et al. Comparative effects of daily and weekly boron supplementation on plasma steroid hormones and proinflammatory cytokines. J Trace Elem Med Biol, 2011. PMID 21129941
9. Naghii MR, Samman S. The effect of boron supplementation on its urinary excretion and selected cardiovascular risk factors in healthy male subjects. Biol Trace Elem Res, 1997. PMID 9197924
10. Melenikioti E, et al. Dietary Lithium, Silicon, and Boron: An Updated Critical Review of Their Roles in Metabolic Regulation, Neurobiology, Bone Health, and the Gut Microbiome. Nutrients, 2026. PMID 41683210
11. Khaliq H, et al. The Physiological Role of Boron on Health. Biol Trace Elem Res, 2018. PMID 29546541
12. Morgado A, et al. Do "testosterone boosters" really increase serum total testosterone? A systematic review. Int J Impot Res, 2024. PMID 37697053
13. Pizzorno L. Nothing Boring About Boron. Integr Med (Encinitas), 2015. PMID 26770156
14. Kaliounji A, et al. A Rare Case of Tongkat Ali-Induced Liver Injury: A Case Report. Cureus, 2024. PMID 38646387

Written and reviewed by Nick Lange, All Day Fire. Last reviewed 18 Oct 2026.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for information only and is not medical advice. Talk to your doctor before starting any supplement.