The Best Testosterone Boosters of 2025, RDN-Approved

Testosterone is a powerhouse hormone that influences everything from muscle strength and lean body mass to energy, mood, and libido. Unfortunately, aging, stress, poor sleep, health conditions, and certain medications can chip away at testosterone levels, leaving many athletes looking for testosterone boosting supplements. While these supplements certainly won’t turn you into the Incredible Hulk overnight, natural testosterone boosters could support those who are serious about maximizing their muscle gains and energy. 

We’ve rounded up the best testosterone boosters out there to help you stay on top of your fitness game. As a dietitian, I’ll break down the ingredients so you know exactly what you’re getting. Plus, our expert testers provide their valuable feedback from having tried these products first hand. Whether you’re looking for something with all-natural ingredients, a supplement designed for men over 50, the best option for muscle gains, or a budget-friendly pick, there’s something on this list for you. 

The 8 Best Testosterone Boosters of 2025

• Best Testosterone Booster Overall: Transparent Labs Vitality
• Best Research-Backed Testosterone Supplement: Nutricost Testosterone Complex
• Best Testosterone Booster for Men Over 50: Legion Vitality Complex
• Best Over the Counter Testosterone Booster: TestoPrime
• Best Affordable Testosterone Booster: Momentous Tongkat Ali
• Best Natural Testosterone Booster: Testosil
• Best Testosterone Booster for Muscle Gain: Testofuel Testosterone Booster
• Best Testosterone Supplement for Workouts: Testogen

Medical Disclaimer: This article is intended for educational and informational purposes only. Do not use this is a replacement for medical advice. Instead, contact your healthcare provider. If you are a transmasculine athlete, these testosterone boosters are not designed with your specific needs in mind. Please consult a trans-affirming medical professional for your hormone replacement therapy needs.

Best Overall Testosterone Booster : Transparent Labs Vitality

Pros

Ashwagandha may help increase testosterone

No artificial sweeteners or colors

Third-party tested

Cons

Need multiple doses daily

$1.83 per serving is pricey

If you’ve hit a plateau in your workouts, it might be worth trying a testosterone-boosting supplement like Transparent Labs Vitality to break through. Transparent Labs Vitality is formulated with ingredients that are designed to work together to help increase testosterone levels and help you crush workouts. 

Key ingredients include 15mg of zinc, which is crucial for testosterone production and fertility, and 600mg of organic ashwagandha, an adaptogen known for reducing stress and cortisol levels. (19)(20) Elevated cortisol can interfere with testosterone production and slow down muscle recovery, so this combination could support your overall performance and muscle-building goals. (6)

“I’d score this a 4.25 out of 5 for its formulation,” says Chelsea Rae Bourgeois, RDN. “The research is there — Vitality uses clinical doses of proven ingredients.”  Bourgeois also loved that the formula is third-party tested to be Informed Sport Certified, helping ensure the accuracy of the label. 

That said, the serving size can be a bit much, especially if you opt for the twice-daily dose. Transparent Labs recommends taking two capsules once or twice a day. Keeping up with a second serving can feel inconvenient, which is why we rated this category 3 out of 5.

When it comes to overall value, Transparent Labs Vitality scored a solid 4 out of 5. The formula checks all the right boxes with its research-backed ingredients and transparency—no proprietary blends here. However, at $1.83 per serving, it’s on the pricier side and might not fit into every athlete’s budget.

[Related: The Best Natural Ways to Increase Your Testosterone]

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Best Research-Backed Testosterone Supplement: Nutricost Testosterone Complex

Pros

Uses researched ingredients

Third-party tested

Budget-friendly

Cons

Three capsules per serving

Bioperine isn’t well-researched

The best testosterone supplements feature research-backed ingredients at clinically tested dosages and are free of unnecessary fillers and fluff. Nutricost Testosterone Complex fits the bill, earning an impressive 4.5 out of 5 for its well-thought-out formulation.

This product is made with natural ingredients, like maca root powder, long jack extract, and banaba leaf extract. 400mg of tongkat ali and 250mg of shilajit extract. Unlike other testosterone supplements, this one is also third-party testing, earning a 5 out of 5 in this category.

There’s also 15mg of zinc, which have been shown to increase testosterone and play a role in bone strength. (7)(19) Finally, the formula also includes 10mg of bioperine, which may enhance the absorption of nutrients in the supplement, however, more research is needed on this (1)

The serving size is three pills once a day, which isn’t the most ideal. You only have to take it once per day but for those who take many capsules per day, this can still be a burden, earning a 3 out of 5 for convenience.

We also liked the price point with this product, which is $16.97 per bottle or $0.56 per serving, earning a 5 out of 5 for value. While you can find more affordable options on this list, we still think this is a pretty reasonable price for a testosterone booster. 

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Best Testosterone Booster for Men Over 50: Legion Vitality Complex

Pros

Bilberry fruit may have cognitive benefits

Third-party tested

All natural ingredients

Cons

Low Rhodiola rosea dose

There are cheaper options

Athletes over age 50 might benefit from a testosterone-boosting supplement that targets inflammation and supports cognitive health. Legion Vitality includes 500mg of BlueBoreal Organic Canadian, a blueberry blend packed with antioxidants that help protect against cell damage and may preserve cognitive function as you age. (2)

Inflammation and oxidative stress can reduce testosterone levels. Antioxidant-rich ingredients like BlueBoreal Organic Canadian may indirectly support adequate testosterone levels by reducing inflammation and promoting overall health and optimal hormone balance. The downside, it’s a proprietary blend, which knocked down our formulation rating slightly. 

This formula also provides 150 milligrams of Rhodiola rosea, which has been linked to improved mood and reduced symptoms of stress. (3) “I’d score Legion Vitality a 3.5 out of 5 for its formulation,” Chelsea Rae Bourgeois, RDN, says. “It contains impressive ingredients, but I wish there were just a bit more Rhodiola rosea.” 

Bourgeois did also like the other clinically-effective ingredients on the list, like Coenzyme Q10 and l-ergothioneine. (8)(30) Plus, our testers love that this product is third-party tested and free of artificial, unwanted ingredients.

The serving size of 2 capsules daily is convenient and manageable, which is why we rated it a 5 out of 5. If you’re already in the habit of taking supplements, adding another 2 capsules to your routine shouldn’t be too difficult.Luckily, this product isn’t too expensive, earning a 4 out of 5 for cost. One 30-serving bottle costs $49.99, which is about $1.66 per serving. This still isn’t the most budget-friendly testosterone booster but you can subscribe to monthly deliveries for a 10% discount.

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Best Over the Counter Testosterone Booster: TestoPrime

Pros

Available over the counter

Can buy in bulk

Research-backed ingredients

Cons

Pricey

Can interact with other medications

Four capsules per dose

While the highest quality testosterone boosters often require a visit to the doctor or a hormone specialist, there are still excellent over-the-counter options available. If you’re looking for a supplement that doesn’t require a prescription or appointment, we recommend TestoPrime.

TestoPrime is formulated with 12 potent ingredients, including d-aspartic acid, panax ginseng, and fenugreek. These ingredients are designed to help reduce stress, boost energy, improve body composition, and potentially support your body’s testosterone production.  (8)(11)(15)(36)

Each serving of TestoPrime consists of 4 capsules, which can feel like a lot if you’re taking other supplements. However, the once-a-day dosing is a plus for convenience, and we rated it a 4 out of 5 in that category.

“While many of these ingredients are backed by research, supplements that aim to interfere with your body’s natural hormone production make me nervous,” according to Chelsea Rae Bourgeois, RDN, who rated the formula a 2.5 out of 5. “Hormones play a key role in our health, so it’s best to address these needs under the guidance of a medical professional.”

Furthermore, some natural or herbal ingredients in this product could interact with medications you may be taking, according to Bourgeois. While many of the ingredients in this formula, like the ashwagandha, are backed by research, it’s still best to consult your doctor if you’re taking other medication. (17)

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Best Affordable Testosterone Booster: Momentous Tongkat Ali

Pros

Budget-friendly

Third-party tested

May help support energy levels

Cons

Minimal ingredients

Requires several weeks of use

Unlike many supplements packed with hard-to-pronounce ingredients with questionable research, Momentous Tongkat Ali focuses on just one herb with significant potential benefits. This targeted formulation may offer more advantages than a product overloaded with unnecessary extras.

Each serving offers 400mg of tongkat ali – that’s it! A 2014 study showed that treatment with tongkat ali was associated with significant increases of free testosterone and muscle force in physically active male seniors. (9) Another 2014 study on tongkat ali indicated it may increase testosterone levels, support sexual health, promote bone strength, and lower cortisol levels. (4)(18)

Since the product only contains a single ingredient, it’s available at a more affordable price tag. A bottle containing 30 servings costs $15.96 ($0.53 per serving), which is less than a quarter of some others you’ll find on the market. For value, we rated this product a 5 out of 5.

The serving size is just two capsules a day, making it an easy addition to most supplement stacks. We gave it a 5 out of 5 for convenience since it’s a manageable dosage that won’t feel like a burden for most people. 

While we appreciate the simplicity of this formula, some athletes may prefer a more robust supplement with additional clinically-backed ingredients. In that case, one of our other picks may be a better pick. 

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Best Natural Testosterone Booster: Testosil

Pros

Includes natural ingredients

Research-backed ashwagandha dose

Available on Amazon

Cons

Four capsules per serving

Pricey

Limited research

If you’re interested in a testosterone booster that includes ashwagandha, Testosil is an option worth considering. This adaptogenic herb is known for potentially reducing stress, anxiety, and cortisol levels, which may support testosterone production. (10) Each serving delivers 300 milligrams of ashwagandha, a research-based dosage that may have positive effects on muscle mass and strength. (21)(37)

“I appreciate that Testosil links a 2015 study to back their claims that 300 milligrams of ashwagandha can support testosterone,” says Chelsea Rae Bourgeois, RDN. “One serving of Testosil also provides 364 percent of your zinc needs, which has been positively linked to testosterone levels.”

However, we rated the formulation at 3.5 out of 5, given the lack of studies linked to other ingredient dosages outside of the ashwagandha root extract. It is important to know that while studies suggest ashwagandha may help increase testosterone levels, additional research is needed to confirm these effects and to recommend the optimal dosage. 

While the capsules aren’t too large or hard to swallow, taking four per serving can feel overwhelming and may be inconvenient for some. “You have to take four capsules to get the full dose of Testosil. If you aren’t keen on swallowing pills, this may be a deal breaker for you,” Bourgeois states.

At $2.30 per serving, Testosil is slightly more expensive than other supplements on our list. However, we still rated the cost a 4 out of 5 since you can purchase it on Amazon. You can order a single bottle for $69 or subscribe and save up to 15 percent.

Finally, we like that Testosil doesn’t contain proprietary blends, giving the product an added sense of label transparency. (35) However, some of the ingredients within this formulation lack solid scientific evidence. (22)(26)(28)(36) We recommend discussing with your physician if you are considering taking a multi-ingredient supplement like this one to ensure it is safe and effective.

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Best Testosterone Booster for Muscle Gain: Testofuel Testosterone Booster

Pros

Ingredients may support muscle gain

Available in bulk for discount

No proprietary blends

Cons

Some may not want more mass

Not the most budget-friendly

Testosterone is key to muscle building, but not all boosters are designed with muscle growth in mind. That’s why we included Testofuel on our list, a product specifically formulated with ingredients that support muscle and bone development.

Testofuel is formulated with multiple ingredients that may help support your body’s production of testosterone and other hormones. Many of the key ingredients are clinically dosed in the proper amounts, earning a 4 out of 5 for formulation.  It includes 4,000 IU of vitamin D3 to aid testosterone production, 18 mcg of vitamin K2 for improved vitamin D3 absorption, and 2,000 mg of D-aspartic acid, which may help increase testosterone levels, though more research is needed. (12)(13)(14) 

“Vitamin D supplementation has been shown to help improve testosterone levels in those who have vitamin D deficiency and low testosterone,” says Dr. Jennie Stanford, M.D., FAAFP, DipABOM. “However, evidence does not suggest that vitamin D supplementation increases normal-range testosterone levels in men.”

The product also includes magnesium and zinc, two key minerals for muscle protein synthesis. Magnesium supports muscle contraction, overall function, and is crucial for protein synthesis. (23) Zinc aids testosterone production and enhances recovery after workouts, helping to maximize muscle gains. (24)

However, we did have to give this supplement a 2 out of 5 for dosage convenience. One dose is four capsules, which is a lot of pills to swallow at once, especially if you’re taking other supplements.

This product is also more expensive than several other options on our list. One 30-serving bottle costs $59.99, which is about $1.99 per serving. However, you can order in bulk for a slight discount. Ultimately, our team gave the cost a 3 out of 5, as this isn’t the most suitable option for athletes shopping on a tight budget.

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Best Testosterone Supplement for Workouts: Testogen

Pros

Fenugreek may increase strength for training

No synthetic ingredients, chemicals, or fillers

Testogen provides research

Cons

Not third-party tested

No caffeine

For those serious about their workout regimen, we wanted to offer a supplement that promotes enhanced energy and exercise performance. With ingredients like zinc, fenugreek, and vitamin D, Testogen may help you produce more testosterone so you can crush your training sessions. (12)(24)(36)

The main ingredient in Testogen is 2,352mg of D-aspartic acid. This amino acid is often included in testosterone boosters because it may stimulate the production of luteinizing hormone, which could increase testosterone levels. (14) However, research is mixed, and more studies are needed to confirm its effectiveness.

Testogen also contains 40 milligrams of fenugreek extract, which may improve upper- and lower-body strength when taken in high doses. (36) That said, we wish this formula offered more than 40 milligrams, as research has been done with 500 milligram doses.

“Testogen scores a 3 out of 5 for its formulation,” according to Chelsea Rae Bourgeois, RDN. “Even though the product claims to be backed by research, it’s outdated and that shows in the doses of each ingredient.” 

Although this product isn’t third-party-tested, we appreciate that it doesn’t include any proprietary blends. “At least this way, you know exactly what and how much of it you’re consuming in each dose,” Bourgeois says.

The four capsule dosage is large and may be inconvenient for some, earning this category a  3 out of 5. Taking four capsules on the go can be a hassle and may not be ideal for those who have trouble swallowing pills.

One 30-serving bottle of this product costs $59.99, which is about $1.99 per serving, so we gave the product a 3 out of 5 for cost. However, if you subscribe to recurring deliveries, you can save a ton, which is a great option for those looking to save.

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How We Tested and Chose the Best Testosterone Boosters

There are tons of sketchy testosterone supplements out there, and sorting through them to find the testosterone supplements that actually work can feel like a full-time job. That’s why we put our supplement testing methodology to work, streamlining the process to find options that are actually worth considering. We focused on quality ingredients, clear labels, proper dosages, and third-party testing to ensure the products on this list are top-notch. 

• Ingredients: We took into consideration the efficacy and research behind key ingredients in each supplement. Our list also includes products with all-natural ingredients that avoid the use of artificial flavors, colors, and sweeteners. 
• Proprietary Blends: We aim to choose supplements that aren’t loaded with proprietary blends, so you know exactly how much of each ingredient you’re getting.  (35)
• Dosing: It’s one thing to include an ingredient, it’s another to include it in a clinical dose — the amount that has been researched. We prioritized products with effective amounts of active ingredients. 
• Third-Party Testing: Our team prioritized products that are third-party tested. These have been tested by a third-party lab to help ensure the ingredient list accurately represents what’s in the product. 

Benefits of Testosterone Boosters

We’ve already talked about a lot of the benefits of specific ingredients in testosterone supplements, but as a whole, people might have a lot of different reasons for taking a testosterone supplement. 

• Improved Strength and Muscle: Testosterone boosters may help improve your strength and muscle mass when combined with resistance training. However, this isn’t necessarily a guarantee. (16)
• Fat Loss: Low testosterone is linked with increased fat gain. Maintaining adequate testosterone levels can enhance metabolism and muscle growth, which may aid in fat loss. (25)
• Improved Vitality: Many testosterone supplements include ingredients that may help with erectile dysfunction, such as Korean red ginseng, although the evidence for its effectiveness is minimal. (27) Other common vitality ingredients include those that are intended to help with sperm count and volume, such as zinc. (28) 
• Benefits for Others: The general benefits of increased muscle mass and strength are likely by including a testosterone booster in one’s supplement stack. (29) People of all genders tend to lose testosterone over time.

How Much Do Testosterone Boosters Cost?

Testosterone boosters vary in price based on several factors, including the number of ingredients, dosages, and certifications. Products with multiple ingredients in clinically backed dosages and third-party testing are generally more expensive. Simpler formulations with fewer ingredients tend to be more affordable.

What to Consider Before Buying Testosterone Boosters

Purchasing supplements, including testosterone boosters, requires careful consideration. To get the most for your money, it’s important to review factors like ingredients, dosages, third-party testing, and serving size.

Ingredients 

Check the ingredients list to ensure the product you choose contains ingredients backed by clinical support. D-aspartic acid, ashwagandha, fenugreek, zinc, and vitamin D are commonly found in testosterone boosters and may be effective for raising testosterone levels. (12)(14)(20)(24)(36) Be cautious of products that include unnecessary additives or filler ingredients that aren’t well studied. (26)

Dosages

It’s important to choose a testosterone supplement that not only contains quality ingredients but also includes them at clinically effective dosages. Even the most researched ingredients may not be effective for boosting testosterone if the dosages are too low. Look for dosages that match those used in multiple clinical studies with proven positive outcomes.

Third-Party Testing

We encourage prioritizing supplements that are third-party tested by an independent lab. This testing ensures the product has been thoroughly examined for safety and quality. Third-party tested supplements are free from harmful levels of heavy metals and other harmful contaminants, and they also help verify that the label accurately reflects the actual contents.

Convenience 

Choose testosterone supplements that are easy to integrate into your routine. Some require multiple doses per day, which can be hard to remember, or even several capsules per dose. If you dislike swallowing pills, opt for a supplement with a smaller serving size and once daily administration. A daily supplement should be convenient and fit seamlessly into your schedule.

Best Testosterone Boosters FAQs

References

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