Testosterone boosters are natural supplements that help men raise testosterone levels naturally without a prescription or injections. The best testosterone supplements contain natural ingredients that could help you build muscle, lose fat, improve strength, boost energy levels, and increase sex drive.

But with so many testosterone boosting supplements on the market, choosing the best product for your needs is not easy. To help you decide, we’ve reviewed the top testosterone boosters on a variety of factors including ingredients, dosage, reviews, price, and guarantee.

*Although testosterone boosters offer men an array of health benefits and only contain natural ingredients, it's recommended to seek the advice of your physician or other qualified health professional with any questions you may have regarding a medical condition.  

If you’re ready to increase testosterone levels naturally, here are the best testosterone boosters for muscle gain.

TestoPrime is possibly the strongest testosterone booster on the market for men who want to build muscle, burn fat, and increase energy. Whether you’re a man over 40 that’s looking to restore your youthful vitality or just looking to build muscle faster, TestoPrime may help you reach your goals faster.

Here are the advertised benefits from taking TestoPrime:

TestoPrime consists of 12 testosterone-boosting ingredients that help support healthy testosterone levels. Since the ingredients are all-natural, there is no need for a prescription.

For the best results, TestoPrime is designed to be used as a daily supplement. The manufacturer recommends that you take 4 capsules every morning before breakfast.

The ingredients in TestoPrime include:

Wolfson Berg Limited, the company that manufactures TestoPrime, offers an industry-leading LIFETIME guarantee. If you don’t absolutely love the way you look and feel on TestoPrime, you can return it anytime for a no-questions asked refund. Additionally, each sale comes with free shipping and discounts when buying more than a 1-month supply.

TestoPrime is for anyone over 18 that would like to boost testosterone levels naturally. If you're feeling unmotivated, a decline in sex drive, or finding it harder to build muscle, TestoPrime can help you regignite your masculinity and become the best version of yourself.

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TestoGen is the best testosterone booster for men over 40 that want to build muscle, reverse symptoms of low-t levels, and improve energy levels. Since 2014, TestoGen has been one of the most popular testosterone supplements available with over 85,000 satisfied customers worldwide.

TestoGen helps support healthy testosterone levels to provide an array of benefits such as:

Boost Energy and Reduce Fatigue - TestoGen gives your body the energy it needs to power through your day, hit the gym, and still have enough energy to enjoy family time in the evening. Ingredients like Vitamin B, Vitamin D, and Korean Red Ginseng improve energy production and help prevent tiredness and fatigue.

Better Results From Workouts - With more energy, stamina, and focus, TestoGen will help you get much more from your workouts. Ingredients like Korean Red Ginseng, Vitamin D, and Magnesium help enhance physical performance. Perform at your peak again and start seeing faster results from your efforts at the gym.

Build Muscle and Strength - TestoGen will help you see faster improvements in strength and lean muscle growth when combined with a resistance training regimen. D-aspartic Acid and Fenugreek Extract help support testosterone production and protein synthesis.

Burn Stubborn Body Fat - With improved testosterone levels, your body will be able to burn fat more efficiently. In addition to boosting testosterone production, Korean red ginseng and fenugreek help support fat loss.

Revive Your Sex Drive - TestoGen includes ingredients that help improve libido, erectile function, and sexual performance. Become confident in the bedroom again and enjoy more satisfying sex.

TestoGen comes with a 100-day unconditional money back guarantee. The manufacturer also offers free shipping and free bottles when buying more than a 1-month supply.

Although any man over 18 can take TestoGen, it's best for men over 40. With ingredients that help improve energy, libido, and muscle growth, TestoGen will help you regain your vitality.

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Prime Male is our top recommended testosterone booster for men who want to improve their libidos. Low testosterone levels go hand in hand with a low sex drive. Prime Male gives men a way to boost their testosterone levels to where they were decades earlier. As a result, users experience higher energy levels, more strength, and improved libido.

D-aspartic acid and panax ginseng contribute most to users’ turbocharged sex drive. According to the Roar Ambition Limited website, D-aspartic acid plays a central role in sperm count and sperm motility. Men who consume 2.7 grams of the amino acid per day could potentially see a 50% to 100% improvement in their sexual potency. Meanwhile, panax ginseng, also known as Korean red or Chinese ginseng, increases free testosterone levels and curbs estrogen production.

The ingredients in Prime Male include:

Roar Ambition Limited claims that users can boost testosterone levels up to 42% in 12 days. It contains all-natural ingredients in optimized doses, so you may not have to worry about harsh side effects. Once you take Prime Male for two weeks, you could have a record-high libido.

Each bottle of Prime Male contains 120 pills, enough for one month. Roar Ambition Limited recommends taking the pills throughout the day with a meal or a snack. This even spacing lets the testosterone-boosting supplement stimulate your sex drive around the clock instead of in intervals.

Prime Male caters to any man suffering from a wilting libido and low testosterone levels. The testosterone booster for men restores sex drive while saying goodbye to issues like low sperm count and erectile dysfunction. It also comes with a money-back guarantee, free shipping on select packages, and the endorsement of actor Dolph Lundgren.

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Testo Lab Pro is an all-in-one natural testosterone booster. While the supplement does a little bit of everything for overall health, many people take it for its weight-loss benefits. The potent formula gives men the helping hand they need to shape up and slim down.

Opti-Nutra Limited, the company that manufactures Testo Lab Pro, takes a multi-pronged approach to increasing testosterone levels. First, it restores the vitamins and minerals that men need for healthy testosterone production. These natural ingredients provide the building blocks to shed body fat in the subsequent steps.

Second, Testo Lab Pro tells the body to boost testosterone levels. The signal puts your body into overdrive as it releases the hormones for intense exercise and muscle growth. Finally, the testosterone supplement limits the production of feminizing sex hormones, like estrogen, that make it challenging to build muscle mass and trim body fat.

The ingredients in Testo Lab Pro include:

Four pills per day could provide you with the sustainable testosterone levels you need to reach peak fitness. Each ingredient makes it easier to help build muscle and lose weight, allowing you to obtain your beach body in no time. The testosterone supplement also has a clean label, free of soy, gluten, and caffeine, reducing the odds of potential side effects.

Testo Lab Pro stands out as one of the best testosterone boosters on the market. The top-of-the-line formula supercharges testosterone levels in the body, leading to possible dramatic weight loss and improved overall health. Opti-Nutra Limited even offers a 30-day money-back guarantee if you don’t love the results.

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TestoFuel is the highest-quality testosterone booster for bodybuilding. Low levels of testosterone make it all but impossible to increase muscle mass. That’s because testosterone provides the fuel your body needs to build strength and maximize protein synthesis. TestoFuel may boost your testosterone levels so that you start seeing gains in the gym.

The all-natural ingredients in TestoFuel stimulate the pituitary gland so that it releases more testosterone. Free testosterone allows the body to produce more neurotransmitters, which contribute to tissue and muscle growth. The hormone also interacts with nuclear receptors in your DNA that help regulate protein synthesis.

D-aspartic acid, vitamin D, and oyster extract serve as the backbone of this muscle-building formula. D-aspartic acid increases anabolic hormone levels, while vitamin D contributes to muscle mass and higher metabolism. While oyster extract won’t help you build muscle mass, it will help heighten your sexual performance, thanks to its libido-enhancing properties.

The complete list of ingredients in TestoFuel includes:

TestoFuel isn’t a fly-by-night supplement. It’s the go-to choice of Mr. Olympia himself, Robby Robinson. The bodybuilding legend has used the testosterone booster en route to four Mr. Universe titles and five Mr. Olympia titles.

Four pills of TestoFuel per day are all you need to start channeling your inner Arnold Schwarzenegger. The power supplement boosts your testosterone levels, enabling you to increase muscle mass with each workout session. Wolfson Berg Limited also allows customers to return unused and unwanted testosterone supplements for a complete refund.

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Think of testosterone as fuel. It provides the energy your body needs to grow hair, build muscle, and produce sperm. If you don’t have enough testosterone, it throws off your entire equilibrium.

Testosterone boosters send a signal to the body to increase testosterone production. They can also release certain types of testosterone from bonds, activating them for physical development. Note that testosterone boosters do not contain testosterone; they only support your body’s natural functions.

The best testosterone supplements return your body to the proper equilibrium. Always follow the directions on the label before taking the tablets. While it’s uncommon, you can have too much of a good thing.

Some side effects of too much testosterone include acne, liver disease, prostate enlargement, and fluid retention. Contact your doctor if you experience these symptoms after taking a supplement. They may indicate more severe underlying problems.

The ingredients make all the difference in your testosterone levels. The best testosterone booster supplements contain all-natural ingredients, like nettle leaf extract, fenugreek seed, and vitamin D3. Wholesome formulas and scientific research increase the likelihood that the products will live up to expectations.

The same does not apply to synthetic supplements. Testosterone boosters with artificial ingredients, dyes, and fillers probably won’t yield the life-changing effects you want. That’s why you won’t find products with bogus formulas on our list.

We also recognized testosterone supplements made in America. The “Made in the USA” labels typically denote a commitment to GMP and world-class quality. Additionally, purchasing American-made goods allows you to support local businesses and communities.

Dose optimization marks a win-win situation for manufacturers and customers. The process involves creating a dosing regimen in which someone can receive their daily dose in a single unit. Users don’t have to fuss over counting tablets, and manufacturers can produce fewer pills at higher dosages.

Dose optimization works best if you take supplements with various strengths. Instead of taking two 10 mg testosterone-boosting supplements and a 20 mg one, you could take one 40 mg pill. We featured products with dose optimization so that you stay on track with your testosterone restoration. Be sure to always double check your doses before consuming a testosterone booster.

Everyone has made a purchase that they regret. Perhaps you bought a shirt that didn’t quite fit or a case one size too small for your phone. Flexible return policies allow you to get your money back without a hassle.

We included only companies that offer money-back guarantees. If the testosterone boosting supplements don’t make a difference for your muscle mass, just contact the manufacturer about sending back the merchandise. They’ll walk you through the return policy and how to get your refund.

Money-back guarantees provide peace of mind when purchasing testosterone supplements. Hopefully, the tablets work as expected, and you see dramatic muscle growth in the following weeks. If not, you can fall back on the return policy and save yourself from a financial loss.

The best testosterone boosters cost $40 to $80 for a one-month supply. While the price tag may appear steep initially, it offers customers the best of both worlds. Not only do consumers receive top-of-the-line testosterone boosting products, but they also won’t break the bank to look and feel their best.

Consider buying your supplements in bulk if you want to save money. Companies provide discounts to customers when they purchase more than one bottle at a time. This approach makes financial sense if you plan on using a specific testosterone booster for several months.

Take TestoFuel, for instance, our top choice for bodybuilders and fitness enthusiasts. A single bottle of TestoFuel costs $65. However, if you buy the Ultimate Alpha Pack, you get seven bottles at $46.43 apiece. The company even adds free worldwide shipping.

Customer reviews matter. According to The Blumenthal Blog, approximately half of consumers need to see a four-star rating before considering shopping at a business. If the company falls below the four stars, it’s effectively alienating half of its potential customer base.

We included only testosterone boosters with glowing online reviews. You can find gushing testimonials from real customers about how the product transformed their physiques. The products on our list also have positive feedback on websites like Google Reviews and Yelp.

Natural testosterone boosters and steroids have a couple of notable differences. For starters, steroids require a prescription from a doctor; testosterone boosters don’t. Second, you can consume your natural supplements like you would any multivitamin, while steroids require injections from specialists.

Here’s the most significant difference: Natural testosterone boosters don’t contain testosterone. They only coax the body into producing more of it. Steroids are a form of synthetic testosterone that corrects low testosterone levels.

Let’s review these differences in depth. Natural supplements increase testosterone in three different forms: free, SHBG-bound, and albumin-bound testosterone. Free testosterone exists in a pure form and can enter cells to activate receptors when needed. However, it accounts for only 2% to 3% of the testosterone in the body.

About half of our testosterone has a connection to sex hormone-binding globulin (SHBG). It plays a critical role in regulating free testosterone but remains inactive most of the time. Finally, your liver produces albumin-bound testosterone, and your body may convert it to free testosterone if it needs more.

The best testosterone booster increases the baseline amount of free testosterone. The more you have in your body, the easier it can be to gain muscle mass and lose weight. Leading supplements also break the bonds between other types of testosterone. This process frees up SHBG testosterone and albumin testosterone to take on more work.

Often, people who receive steroids get them because of delayed puberty or hypogonadism. These conditions can decrease libido, energy levels, testosterone production, and bone density. Injections do the work that the liver or testes would do if they functioned properly.

You should consider testosterone replacement therapy only if you have a severe medical condition and have spoken to your doctor. Doctors will often identify and address hypogonadism in boys. The early diagnosis allows them to treat the underlying issues for three to six months so that patients can enter puberty and avoid some of the symptoms of low testosterone.

The symptoms of low testosterone become more prevalent with age. The number of men who have low testosterone rises 50% between ages 60 and 70 alone. That includes any man with less than 300 nanograms of testosterone per deciliter of blood.

Some of the most common symptoms include:

Low-T levels have so many symptoms because testosterone plays so many roles in the body. It contributes to our mental and physical well-being from birth. When you take it away, the consequences manifest themselves across the board.

Take erectile dysfunction, for instance. Testosterone allows men to obtain and maintain erections. The hormone doesn’t act alone; it stimulates receptors in the brain that release nitric oxide.

Nitric oxide functions as a vasodilator, relaxing the blood vessels in the penis. When a man becomes aroused, nitric oxide enables the genitals to engorge with blood. Testosterone boosters can help men achieve an erection if they don’t produce enough nitric oxide naturally.

The same applies to body fat. Men with low T levels tend to have more body fat than men with high testosterone. Men with below-average T levels don’t have the proper hormone levels, and, as a result, estrogen expresses itself more prominently in their physiology. Taking a supplement to boost testosterone can correct this imbalance.

Testosterone plays a vital role in a healthy lifestyle. For instance, it spurs red blood cell production in the bone marrow. These cells carry oxygen around the body, allowing you to power through grueling workouts, whether you’re at the gym or on a run.

Researchers have made several connections between testosterone and heart health. A study with 83,000 participants found that high testosterone levels lead to a 24% reduction in the risk of a heart attack. Researchers also determined that testosterone contributed to a 36% reduction in strokes.

If people know one thing about testosterone, it’s that the hormone can build muscle. Testosterone serves a central function in the development and maintenance of muscle tissue. It can also help men control their weight while boosting their energy levels.

A testosterone-boosting supplement provides the building blocks for muscles to grow larger and stronger. It creates the protein molecules that your body uses to add on top of existing layers of tissue. If you want to maximize your muscle size, take a testosterone supplement with regular exercise and strength training.

If you have low levels of testosterone, there’s a good chance you have weak bones, too. The hormone plays a key role in bone mineral density. People who don’t have enough testosterone are more likely to suffer fractures and osteoporosis.

Existing research says that test boosters support bone mineral density as long as the dose is high enough. For example, clinical trials have found that testosterone fortifies the bones in the hips and spine. It can also bolster athletic performance, providing organs and muscles the support that athletes need to succeed on the field.

It’s not a coincidence that your testosterone levels are the highest in your teens, when your libido levels are sky-high. Testosterone rises and falls with sexual activity and arousal. Older individuals with erectile dysfunction and waning libidos often require test boosters to enhance their sexual performance.

When men reach their mid-30s, their interest in sex tends to drop. While this decline can stem from depression or stress, it’s most likely a byproduct of low testosterone. The best testosterone boosters on the market correct this dip and improve your libido in the process.

Some research suggests that low testosterone levels correlate with a lower quality of life. Men with lagging T-levels tend to experience higher rates of depression, irritability, and restlessness. The research on testosterone and mood is only in its infancy, but researchers have found a strong connection for men with hypogonadism.

Men who take testosterone boosters often report an improvement in mood. That includes lower rates of depression and irritability.

You need a balanced diet if you want to maximize your testosterone-boosting health benefits. That starts with vitamin D, a fat-soluble vitamin found in fatty fish, soy milk, cereal, and orange juice. Vitamin D protects your body from sunlight and serves as a steroid hormone in the body.

Multiple studies have found a link between low vitamin D levels and low testosterone. People who spend more time in the sun tend to have more vitamin D and testosterone. Sunshine can also contribute to higher sperm quality and improved sexual performance.

One study tested the effects of vitamin D on 65 men. The trial group took 3,300 IU of the vitamin daily, while the remaining participants received a placebo. Researchers found that the men in the trial group increased their testosterone production by 20%.

Tribulus terrestris is a small fruit that hails from Africa, Europe, and Asia. While some people find the plant a nuisance for its burs, fitness fanatics love it. They believe that the herb can raise testosterone levels in men while contributing to a higher sex drive.

The versatility of Tribulus terrestris has made it a popular choice in natural testosterone boosters. It promises to turn you into an MVP on the field and in the bedroom. Researchers have already performed studies that linked Tribulus terrestris with increased testosterone levels in animals.

D-aspartic acid is a natural amino acid that can single handedly boost your testosterone levels. It stimulates the body to release luteinizing hormone, an essential hormone in sexual development and growth. The hormone stimulates the cells in the testes that generate a testosterone-boosting effect.

One study found that D-aspartic acid can boost luteinizing hormone and testosteronein 12 days. Another study found that men could double their sperm count with this testosterone booster. Participants raised their sperm count from 8.2 million to 16.5 million sperm per milliliter during the 90-day trial.

Many of the best supplements on the market contain D-aspartic acid, including some on this list. The clear-cut health benefits make it an obvious choice for anyone dealing with low testosterone. Researchers do not believe that D-aspartic acid has any meaningful side effects.

Ginger is another household ingredient that has a potential testosterone-boosting effect. The herb has various health benefits, like lower cholesterol and inflammation levels. Some people believe it can increase testosterone levels in less than a month.

Researchers in one trial had 75 infertile men take daily ginger supplements. The participants ate ginger for three months before the researchers retested their testosterone levels. Participants ended up having a 17% increase in testosterone levels and nearly twice as much luteinizing hormone.

Dehydroepiandrosterone (DHEA) may not have the name recognition as some of the other ingredients on this list. Still, it deserves your consideration as a daily supplement. The hormone comes from your adrenal glands and helps regulate hormone levels.

Some research has shown a positive correlation between DHEA and testosterone levels. DHEA has such a significant impact that professional athletes can’t take the supplement. As long as you’re not suiting up for the New York Yankees or Los Angeles Lakers, you’re free to take this testosterone-boosting supplement.

You should consider the side effects of everything you put in your body. For instance, drinking too much water can cause hyponatremia, a condition involving low sodium levels in the body. The same precaution applies to testosterone supplements.

Most products have no meaningful side effects. The testosterone boosters on our list use natural ingredients that work with your body instead of against it. If you do experience side effects, there’s a chance you’re allergic to one of the active ingredients.

Talk with your doctor if you have questions about a specific testosterone booster. They understand your body and can help you make an informed decision. The last thing you want is to go to a hospital after using a test booster to gain muscle or lose weight.

Are you unhappy with your body? Do you find it challenging to add muscle mass even with weekly trips to the gym? If you answered yes to these questions, you might benefit from all-natural testosterone boosters.

These cutting-edge supplements give your body fuel to achieve peak performance. They’re known to increase testosterone levels while supporting muscle growth, weight loss, and improved libido. The right product will make you feel like a 20-year-old again.

Remember that each supplement on our list has a unique set of benefits. TestoFuel works well for older men in the bodybuilding community, while Prime Male could boosts male sex drive. Choosing the best testosterone booster supplements for your needs will ensure that you get the results you want.

This article is provided by an advertiser. Statements made are not meant to offer medical advice nor to diagnose any condition. Any studies cited here may be preliminary, and may or may not be peer reviewed, and may or may not have sufficient participants to be statistically relevant. Anecdotal accounts should not be taken as scientific results. Products discussed in this article are not designed to diagnose, treat, prevent, or cure any disease. The FDA does not evaluate dietary supplements. Consult your doctor about possible interactions, allergies, and if you are considering using a natural and/or dietary supplements for any condition. Individual results will vary.