Boron is a trace mineral element that, when taken in supplement form, can help improve your bone strength, increase levels of testosterone, improve your cognitive function, and decrease levels of inflammation in your body.
Boron was historically a fairly obscure mineral, but increasing amounts of scientific research are demonstrating that it plays a critical role in everything from bone metabolism to brain function.
If these benefits are what you are looking for, we’ve evaluated and ranked the ten best boron supplements on the market so you can make the most of its physiological benefits for your body.
1. Pure Encapsulations Boron Glycinate
Pure Encapsulations has the most minimal and easily absorbable boron supplement around. It’s delivered using boron glycinate, which can be easily absorbed by your body, and the vegetable-based cellulose capsule is vegan-friendly.
With zero additional ingredients, this supplement delivers a respectable 2 mg dosage, which is plenty for most people. Unless you know you need a higher dosage, this should be your top choice.
2. Now Boron
Now Boron delivers a 3 mg dose of boron in the form of calcium borogluconate. It’s contained in an animal-based gelatin capsule and only has a couple of additional ingredients: rice flour and stearic acid, both to hold the capsule together. It’s an easily-absorbed form of boron in a fairly simple package, making it a good choice.
3. Swanson Triple Boron Complex
Swanson Triple Boron Complex uses three different forms of boron to ensure that this high-dose boron supplement achieves a high level of bioavailability.
With boron glycinate, citrate, and aspartate, the amount of boron you actually absorb from this boron supplement is going to be higher than many of its competitors.
Not everybody needs a high dose of boron, but if you do, Swanson Triple Boron Complex is the right choice.
4. Trace Minerals Ionic Boron
Trace Minerals makes their boron supplement in liquid form. Using an ionic salt form of boron, each serving (delivered with the measured dropper in the vial) delivers 6 mg of boron, along with a small amount of a few other trace minerals like calcium and magnesium.
The liquid form is the primary convenience of this supplement; while it’s harder to get a precise dose because of the difficulty of accurately measuring small amounts of liquid, it’s far easier to incorporate a couple of drops of this boron supplement into a shake or a smoothie.
It’s a good choice if you’ve already got enough capsule-based supplements or medications in your life.
5. Bluebonnet Triple Boron
Bluebonnet is far from the only supplement manufacturer to make a triple source boron supplement using boron glycinate, citrate, and aspartate, but Bluebonnet does have a solid reputation for supplement purity.
This boron supplement delivers 3 mg per serving, and comes in a vegan-friendly vegetable derived cellulose capsule. It’s a decent middle of the road choice.
6. Good State Health Solutions Natural Ionic Boron
Good State Health Solutions makes a liquid form of boron that’s just boric acid dissolved in highly purified water.
This is a good option if you need a high dose of boron in liquid form, but for most people, the difficulty of measuring out the liquid in an accurate manner is going to offset these benefits for most people.
Keep it on your list if you do need a large volume of high-dose liquid form boron, though.
7. Life Extension Boron
Life Extension tries to capitalize on the multifaceted and evolving knowledge on boron’s biological role by providing it alongside vitamin B2 for enhanced hormonal benefits.
It has a triple source boron complex like a few of the other boron supplements on the market, which will enhance its bioavailability, but the inclusion of vitamin B2 is hard to justify so far—our understanding of the function of boron is so limited that it’s hard to definitively point to research showing that this particular combination is going to be beneficial.
8. Twinlab Tri-Boron
Twinlab makes a boron supplement that uses the same three-source combination of boron that you’ll find in other boron supplements: boron glycinate, boron citrate, and boron aspartate.
It’s delivered at a dose of 3 mg and comes in a gelatin capsule. Unfortunately, there are a few more extraneous ingredients than some of the other boron supplements out there, landing Twinlab Tri-Boron a bit lower in the rankings.
9. Nature’s Way Boron Complex
Nature’s Way makes a 3 mg boron supplement, which is delivered as an amino acid chelate. While amino acid chelates are usually well-absorbed, the manufacturer doesn’t specify which amino acids this boron supplement is chelated with, making it difficult to compare with other supplements and making it impossible to match the supplementation protocols used in the scientific literature.
While it’s not an awful option, other boron supplements don’t have these drawbacks.
10. Vibrant Health Super Natural Boron
This boron supplement is delivered in the form of calcium fructoborate, and is paired with broccoli powder for some green superfood power. The boron dosage is 3 mg, so pretty solid. While green veggies are definitely beneficial, there isn’t enough research to support this pairing either, so it makes it hard to recommend. To take advantage of the full range of boron’s benefits, it’s probably better to take a more focused supplement.
Boron benefits and side effects
Until fairly recently, boron was thought to be of importance mostly for plants, not for people. But a raft of scientific evidence is changing that perspective, and now, we know that boron can improve your health in a number of ways.
There’s evidence that boron can boost your testosterone levels, improve your cognitive function, decrease inflammation in your body, and strengthen your skeleton.
Boron can boost your testosterone levels. Testosterone is a hormone that plays a role in everything from regulating your body fat concentration to building muscular strength to maintaining healthy sexual function.
Its omnipresent nature seems to make it prone to being affected by deficiencies in trace minerals like zinc and magnesium—that’s why many testosterone boosters contain these trace minerals. Nutrition research suggests that the same may be true with boron.
A scientific study published in 2011 in the Journal of Trace Elements in Medicine and Biology investigated the effects of a boron supplementation routine on blood levels of hormones and inflammatory markers (1).
The experiment involved a seven-day period of boron supplementation, during which the participants took 10 mg of boron every morning. At the study’s conclusion, the researchers re-tested levels of the blood biomarkers measured at the study’s outset.
They found that the boron supplementation routine resulted in a significant increase in testosterone and a significant decrease in estrogen. While testosterone is affected by a wide range of nutrients, this study demonstrates that boron should not be neglected from that list.
Boron can reduce inflammation in your body. The same study also found a significant decrease in pro-inflammatory cytokines, compounds that are linked to higher levels of inflammation in your body.
Additional evidence for this comes from a review study by Curtiss D. Hunt and Joseph P. Idso at the United States Department of Agriculture (2). The review cites evidence that boron plays a role in regulating the normal inflammatory process in your body.
If your boron levels are disrupted, the consequence could be abnormal inflammation. More direct evidence supports the idea that boron could be used to actively reduce inflammation in your body.
A study published in the journal Biological Trace Element Research by researchers in Romania tested whether a boron supplement improved symptoms in people with osteoarthritis, a classic inflammatory disease (3).
Participants were split into several groups. One received a placebo supplement with no boron included, while the other three received increasing doses of boron, ranging from 1.5 mg per day to 6 mg per day. After 15 days, the researchers found that the patients receiving the boron supplement fared better and had fewer signs of inflammation than those who did not.
Boron can help support cognitive function. Research published in the journal Environmental Health Perspectives used a direct nutritional intervention to study the effects of boron intake on cognitive functioning (4).
The researcher behind the study compared two diets designed to be very low and very high in boron content across a series of three different studies. When subjects were on the low boron diet, they showed worse cognitive performance on a number of fronts: manual dexterity, attention, perception, and hand-eye coordination.
Even raw measures of brain power, like reaction time, were adversely affected by low boron intake. The same researcher also authored a review on a few additional studies which testified to the importance of boron to brain function (5).
When boron levels drop below a critical threshold, cognitive abilities are impaired across a wide range of tasks. Most interestingly, the subjects in these studies had borderline low boron levels when they came in, indicating that boron deficiency is quite common among the general population.
Boron plays an important role in bone strength. Boron appears to interact with various hormones, plus calcium levels in your body, to help strengthen your bones.
According to a review paper in the Journal of Trace Elements in Medicine and Biology, studies in both humans and animals demonstrate that a normal boron intake level supports bone growth, and a lack of adequate boron has deleterious effects on bone strength (6).
Another scientific article by nutrition researchers at the University of California Berkeley suggests that boron helps mediate the interactions between calcium, magnesium, and vitamin D, which are all essential for building bone density and interact in a complicated interplay (7). If boron levels are insufficient, this system does not work as well as it should, and bone health suffers. While boron is not the only component for building strong and healthy bones, the research indicates that it is a critical one, and should not be neglected.
So far, no clinical studies have reported any adverse effects or side effects related to boron. The United States Institute on Medicine Panel on Micronutrients found no evidence for any adverse effects related to high boron intake, even at levels far beyond what’s used in scientific research on boron supplementation (8).
Even so, the research on boron is fairly new, so it’s best to stick to the established dose ranges. There is no evidence you’ll face any risks for going beyond these, but there is also no evidence for any benefits either.
The most comprehensive research on boron supplementation has examined dosages ranging from 1.5 to 6 mg per day. Your diet may naturally provide one or two mg of boron per day already—in the only studies on direct boron intake, that was the level of dietary boron prior to any dietary interventions.
So, you’ll likely get the best results at between 2 and 3 mg of supplemental boron per day. Doses beyond that aren’t necessary for most people. Stick to this recommended range unless you’ve got good reasons to go beyond it.
Boron has a wide range of applications, from supporting healthy brain function and cognition to keeping your testosterone levels high and your inflammation levels low.
It could be helpful for older men who struggle with low testosterone and “brain fog,” as well as people looking for relief from arthritis or other inflammatory conditions.
There are no adverse effects known so far, and the optimal dose for most people looks to be 2 to 3 mg per day. That’s the range of doses used in the scientific studies that have found the greatest benefits.
Taken at this level, boron could be an easy addition to your supplementation routine that has broad health benefits.