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Your fitness goals seem forever out of reach, whether in powerlifting, bodybuilding, or an outdoor sport requiring brute strength. Or, you may have been sidelined for too long by an injury and want to snap back to action!

If this sounds like you, the best SARMs for bulking can help. However, some products sold online don’t contain what they claim or have ineffective or even harmful ingredients.

That’s why we did the research for you and found that several products from CrazyBulk, including the Testol 140, could meet your needs.

Best SARMs for Bulking in 2025

• Testol 140 - Our top pick of the best SARMs for bulking
• Ibuta 677 - Best SARM alternative for growth hormone
• Ligan 4033 - Best SARMs for lean bulking
• SARMs Bulking Stack - Best SARMs stack for bulking

How to Choose the Best SARMs for Bulking

Ingredient quality, research evidence, and brand reputation are critical factors in choosing the best SARMs for bulking.

Ingredient Quality

Each supplement's ingredients had to be clean, natural, safe, and available in high enough doses to be effective. We immediately ruled out anything with pharmaceutical “assistants” or without quality manufacturing assurance.

Clinical Research Backing

These ingredients had to be backed by clinical evidence. This means research on humans showing their benefits for muscle growth and athletic performance, including specific populations such as older adults. We also looked for results showing higher testosterone levels and measurements such as anti-aging effects at a tissue level.

User Feedback

Positive user reviews ensure that each product contains effective ingredients and is backed by an honest company with quality customer service. Before-and-after photos or descriptions can be very useful when finding the best SARMs.

Daily Dosage

The daily dose of the best SARMs for bulking must balance convenience with efficacy. No one wants to take loads of pills before they can see any significant results.

Manufacturer Reputation

Finally, each manufacturer needed to have used GMP-certified, FDA-registered facilities. Any company with a history of dishonest or exaggerated labeling was disqualified. We also immediately ruled out any product that may have illegal pharmaceutical “helpers. "

Detailed Reviews of the Best SARMs for Bulking

What makes   stand out if bulking is your goal? Let’s look at CrazyBulk’s top products, how they work, and their offerings.

1. CrazyBulk Testol 140 - Best SARMs for Bulking Overall

Pros

• It contains several essential nutrients for testosterone production
• It may help relieve muscle stem cell aging with SenActiv
• Includes muscle-building ashwagandha
• 60-day money-back guarantee

Cons

• It uses magnesium oxide, which is poorly absorbed

Overview

Testol 140 is the best SARM for bulking on our list, thanks to its ingredients that may boost testosterone and support lean muscle growth. These include SenActiv, which contains Panax notoginseng and Rosa roxburghii. Panax notoginseng may help clear senescent (aged) cells and improve athletic performance.

One study found that it eliminated senescent cells in most young men and increased endurance by 12% in a cycling test. Senescent cells may contribute to degeneration and poor functioning [1].

Another ingredient in Testol 140 is ashwagandha, which is included as the standardized KSM-66 extract. A trial involving men aged 40-70 showed that ashwagandha increased testosterone levels by 14.7% and DHEA by 18%. Your adrenal glands produce DHEA and can become testosterone, along with other sex hormones [2].

Dosage

Take 4 capsules 30-45 minutes before your workout.

Pricing

Testol 140 costs $69.99 for a one-month supply. A three-month deal is available for $139.98, which is the same as a two-month supply.

User Reviews

Verified buyer reviews for Testol 140 on the official website look like this one from one user: “I’m 37, and my T was low. I was tired all the time. Testol-140 saved my life!! I have more energy and stamina. I can see more muscle definition [3].”

That said, on CrazyBulk’s Trustpilot page, Aldo complained about the prices of their products even though he didn’t buy them [4].

2. CrazyBulk Ibuta 677 - Best SARM Alternative for Growth Hormone

Pros

• Contains amino acids essential for growth hormone and protein synthesis
• Zinc may boost testosterone levels
• The product page provides a list of scientific references
• 60-day money-back guarantee

Cons

• Zinc intake may cause nausea, loss of appetite, and abdominal cramps

Overview

CrazyBulk’s Ibuta 677 contains essential nutrients for growth hormone, testosterone, and creatine production.

For example, glycine is necessary to produce creatine, glutathione, and collagen. Creatine improves muscle energy and is the most evidence-based supplement for muscle growth and strength gains. Glutathione is the “master” antioxidant and can protect your tissues against damage from heavy workouts. Collagen is the most abundant protein in your body [5].

Arginine and ornithine are two more ingredients in Ibuta 677. Research demonstrates that they can increase growth hormone and insulin-like growth factor-1 (IGF-1) during and after strength training. This is why you are advised to use Ibuta 677 while exercising to improve strength [6].

Dosage

Take 4 capsules around 30-45 minutes before strength training.

Pricing

While one month’s supply costs $69.99, you can save with a 3-month package for $139.99.

User Reviews

Reviews on the official product page are generally positive: “When I got married, my wife made me stop taking SARMs because she was worried about my health… but I was worried about losing mass. I have been on IBUTA 677 for a year now, and I haven't lost any muscle [7].”

On CrazyBulk’s Trustpilot profile, one user named Christian complained that despite placing an order on December 1st and following up on December 6th, he still hadn't received his $270 worth of products by December 20th. He claimed his emails to CrazyBulk had gone unanswered for 3 days [8].

3. CrazyBulk Ligan 4033 - Best SARMs for Lean Muscle

Pros

• Choline may help you build muscle while cutting down fat
• Beetroot extract may support healthy circulation
• Can correct common vitamin D insufficiency

Cons

• Some people find caffeine overstimulating

Overview

Ligan 4033 contains ingredients that may help build lean muscle tissue and promote fat loss. It may also be an excellent option for women.

A study involving female judo athletes demonstrated that one ingredient, choline, helped them lose weight without losing strength. Their body fat fell from 18.76% to 16.84% of their body weight. Their average back and leg strength slightly improved from 77.35kg and 93.02 kilograms to 79.29 and 95.78kg, respectively [9].

Another ingredient is a concentrated beetroot extract. One study found that a concentrated beetroot juice extract improved blood flow in postmenopausal women with high blood pressure. This may boost cardio performance while protecting your heart and blood vessels, which is not the case with the use of illegal SARMs [10].

Dosage

Take 4 capsules 20 minutes before your first meal of the day.

Pricing

Ligan 4033 costs $69.99 for 1 month, or you can buy a 3-month package for $139.98.

User Reviews

Verified reviews on the official product page are generally full of praise: “I used to cycle LGD-4033 in my early 20s and would get the worst headaches afterward, and I would sink into this depression…CrazyBulk’s LIGAN 4033 is awesome! I feel stronger, and I don’t have any down periods [11].”

Meanwhile, Matthew's review on CrazyBulk’s Trustpilot profile highlights a frustrating experience with customer service. Despite loving the product and its results, he was left disappointed by the lack of response to his emails about a missing order. It took a phone call to get assistance, and even then, he was asked to wait longer for a resolution [12].

4. CrazyBulk SARMs Bulking Stack - Best SARMs Stack for Bulking

Pros

• Save by buying 4 supplements as a package
• Potential for faster gains
• Combines essential nutrients for testosterone and growth hormone with herbal extracts

Cons

• The total daily dose of 16 pills can be unpleasant

Overview

CrazyBulk combines the best SARMs for an effective bulking cycle: Testol 140, Ibuta 677, Logan 4033, and Osta 2866.

The stack includes reishi (Ganoderma lucidum) extract as part of the Osta 2866 supplement. When young women were given reishi extract, their hand grip strength, cardio performance, and overall physical work capacity significantly improved. Better yet, their stress tolerance improved, so reishi may help you get through hectic periods [13].

Osta 2866 also contains cinnamon, an unusual inclusion in natural SARMs. Cinnamon can help restore insulin sensitivity, which allows more glucose to enter muscle cells for energy production. Specifically, cinnamon increases the GLUT4 receptors that muscle tissues rely on to absorb glucose from the blood [14].

Dosage

Take 4 capsules of each supplement every day. Testol and Ibuta should be taken 30-45 minutes before your workout, while Ligan 4033 and Osta 2866 are recommended 20 minutes before your first meal.

Pricing

One month’s supply of the SARMs Bulking Stack costs $249.99. Frequent discount codes are available from time to time.

User Reviews

User reviews of SARMs before and after (on CrazyBulk’s Trustpilot page) are generally positive: “I recently purchased a bulking supplement stack and am pleased with the results. The product delivered on its promise of promoting lean muscle growth without causing unwanted side effects. Instructions are explained perfectly. Overall, it is a reliable choice for those aiming to bulk up” [15].

That said, Tim’s journey with CrazyBulk has been a bit of a rollercoaster! Initially, his 2-star review expressed disappointment over a delayed order and a lack of communication. He was left in the dark for over 2 weeks, with no updates on his package. However, the company redeemed itself by sending a new package free of charge [16].

What Are SARMs?

Selective Androgen Receptor Modulators (SARMs) are intended to provide you with select benefits similar to those of testosterone and anabolic steroids with fewer adverse effects. Understandably, out of curiosity, users have been asking, “Are SARMs legal?” Well,   are only approved for specific, severe needs like experimental therapies.

In this review, we only examined legal products designed to mimic the benefits of SARMs. These products are gentler but safer, with natural ingredients that include essential nutrients for muscle growth and testosterone production. Others are herbal extracts that can boost testosterone and tissue protein synthesis and support glucose and energy metabolism.

How Do SARMs for Bulking Work?

Bulking SARMs have a different molecular structure to anabolic steroids, as they are designed to target specific testosterone receptors. They can bind to the receptors on your muscles and bones without affecting those in your reproductive system [17]. This is because the receptors on each tissue have different structures.

SARMs vs. Anabolic Steroids

SARMs are not hormones. Instead, they are synthetic pharmaceuticals that bind to your testosterone receptors and have varying degrees of strength in their effects. For example, “partial agonists” have milder stimulating properties. SARMs can be made into oral drugs, too, while testosterone must be injected or given as a cream or pellets [18].

Anabolic steroids mimic testosterone and have broad effects on the tissues that respond to the hormone. Unfortunately, this can mean more SARMs side effects.

How to Use SARMs for Bulking

The correct dosage method will vary. Usually, it involves taking the recommended dose up to 45 minutes before a workout or with your first meal of the day. As some users report building up a tolerance to supplements, we recommend playing it safe by cycling on for 2 to 3 months and then off for a couple of weeks.

Even the most potent SARMs for bulking should be combined with strength training and a protein-rich diet. One research study we found demonstrated increased IGF-1 only when ornithine and arginine were combined with strength training.

Why Stack SARMs?

Stacks can help you achieve results faster, which is perfect for injury recovery or extreme endurance events. While some ingredients may overlap, many differ between products and have complementary benefits. For example, the Panax notoginseng in Testol 140 can reduce counts of harmful aged cells, while glycine in Ibuta 677 may boost creatine for muscle energy.

Common Ingredients in SARMs for Bulking

Pharmaceutical SARMs for bulking include several main substances with slightly different effects [18]:

• Ostarine is considered the “best clinically characterized SARM” and has shown success in trials as a treatment for cancer-related muscle wasting. It is effective as an oral drug, unlike anabolic steroids.
• Ligandrol is popular for bulking, performance improvement, and recovery. However, there is only one clinical trial testing it for safety.
• Testolone, or Rad 140, is in early-stage clinical trials for muscle wasting in breast cancer.
• Andarine is a milder SARM but has minimal clinical evidence.

Natural SARMs for bulking commonly contain ingredients including ashwagandha, zinc, and others with the most clinical evidence to back them up:

• Ashwagandha can improve muscle size, leg and bench press strength, and endurance in both men and women. For example, the 1RM bench press scores improved by 10.7 and 11.2 kilograms for men and women, respectively, while mid-arm circumference rose by 1.6 and 1.5cm for men and women [19].
• Panax ginseng and P. notoginseng contain phytochemicals that clear out aged cells, improving endurance by 12%. In young men, it decreased senescent cells from 1.6% to 0.6% of their total cell count [1].
• Amino acids such as arginine, ornithine, and glycine are popular inclusions. These provide building blocks for growth hormone, glutathione and creatine, which support muscle growth, antioxidant activity, and energy [5] [6].
• Choline’s ability to help you burn fat for energy may prevent muscle loss during cutting cycles, such as when you’re practicing martial arts and want to experience optimized weight loss [9].
• Some supplements include beetroot extract and other blood vessel relaxants for improved cardio performance [10].

Potential Benefits of SARMs for Bulking

Using natural SARMs for bulking has several benefits, including a better safety profile than pharmaceutical products.

Minimal Side Effects

SARMs and their natural alternatives do not have the same severe risks as anabolic steroids. While there are case studies on previously healthy young men experiencing heart attacks and liver damage on SARMs, they are less common when on steroids. Better yet, the worst most people can expect with natural alternatives is digestive irritation and agitation from caffeine.

Increased Muscle Mass

Studies on both pharmaceutical and natural SARMs demonstrate increased muscle mass. “Conventional” SARMs may even address the muscle wasting seen in cancer patients, while natural alternatives can work in generally healthy people.   with fewer risks, which is why they are tested in severe conditions.

Improved Physical Performance

Natural and conventional SARMs may offer performance-enhancing benefits, too. For example, time to exhaustion increased by 12% in one trial on a Testol 140 ingredient, while bench press strength improved by around 11 kilograms in another study.

As for conventional SARMs in severe conditions, one paper found that Ostarine can shorten stair climb time by 1.63-2.22 seconds, depending on the dose. Stair climb power also improved by 14-17 watts [20].

Increase Bone Mass

The effects of SARMs may extend to bone density. This is a significant benefit for older adults, particularly women not on menopausal HRT or who are using them in very low doses.

Potential Side Effects of SARMs for Bulking

SARMs side effects are a real possibility, especially if they are pharmaceutical products. Some of them are long-term, such as an increased risk of atherosclerosis from elevated cholesterol levels. High doses may result in liver injury, especially if you take high doses. Surprisingly, SARMs can reduce testosterone, as they may signal that its production isn’t needed [21].

As for natural alternatives, SARMs’ side effects are usually minimal if you experience them at all. Digestive discomfort from large doses or agitation from caffeine are the most likely issues. Liver damage is a risk if you already have a liver problem, and some ingredients can negatively interact with certain medications. Consult your doctor if you need prescription meds long-term.

Best SARMs for Bulking: FAQs

Here are common questions people have when looking for the strongest SARMs for bulking.

What SARMs Are Best for Bulking?

CrazyBulk offers the best SARMs for bulking. They help increase testosterone production naturally and work on other pathways involved in human growth hormone production and muscle building.

Does Rad 140 Increase Testosterone?

No, Rad 140 is a SARM that acts on the testosterone receptors in your muscles and bones. It may work against those in your prostate and seminal vesicles. Some SARMs may even reduce testosterone by doing their job, which signals that your T levels don’t need topping up.

Will SARMs Show Up On a Work Drug Test?

SARMs are not covered by most work drug tests, which generally focus on cannabis, cocaine, and other recreational substances.

Do SARMs Give You Acne?

Some SARMs may worsen or trigger acne if they increase IGF-1. However, this may not be an issue with some natural alternatives unless you are very sensitive. Dietary omega-3 fatty acids and a higher proportion of low-GI carbs may lower your risk.

What Are the Least Suppressive SARMs?

The least suppressive SARMs are natural supplements designed to be gentler but still effective copies of SARMs in terms of benefits. These can boost your testosterone production instead of suppressing it and have a much lower risk of liver damage.

Best SARMs for Bulking: Final Verdict

CrazyBulk has some of the best SARM bulking stacks and other individual products. With unique combinations of evidence-backed ingredients and a good Trustpilot rating of 3.9/5 stars, we had to choose this brand and its range of products as the best.

Different athletes and fitness enthusiasts with varying needs will likely find something to benefit them from this brand. For example, Ligan 4033 includes ingredients for endurance and cardio performance, while Ibuta 677 may be best if you want to focus on human growth hormone production. However, we selected Testol 140 as our top pick overall, thanks to its anti-aging potential and inclusion of the powerful ashwagandha.

>>Get CrazyBulk Testol 140 here

References

1. Wu, Jinfu et al. “Ginsenoside Rg1 supplementation clears senescence-associated β-galactosidase in exercising human skeletal muscle.” Journal of ginseng research vol. 43,4 (2019): 580-588. doi:10.1016/j.jgr.2018.06.002
2. Lopresti, Adrian L et al. “A Randomized, Double-Blind, Placebo-Controlled, Crossover Study Examining the Hormonal and Vitality Effects of Ashwagandha ( Withania somnifera) in Aging, Overweight Males.” American journal of men's health vol. 13,2 (2019): 1557988319835985. doi:10.1177/1557988319835985
3. “Buy Testol 140.” CrazyBulk USA, https://crazybulk.com/products/testol-140. Accessed 22 Dec. 2024.
4. “Aldo Funari Gave CrazyBulk 2 Stars. Check out the Full Review.” Trustpilot, https://www.trustpilot.com/reviews/63b744764d0773066a2f480b. Accessed 22 Dec. 2024.
5. Johnson, Adiv A, and Trinna L Cuellar. “Glycine and aging: Evidence and mechanisms.” Ageing research reviews vol. 87 (2023): 101922. doi:10.1016/j.arr.2023.101922
6. Zajac, Adam et al. “Arginine and ornithine supplementation increases growth hormone and insulin-like growth factor-1 serum levels after heavy-resistance exercise in strength-trained athletes.” Journal of strength and conditioning research vol. 24,4 (2010): 1082-90. doi:10.1519/JSC.0b013e3181d321ff
7. “Ibuta 677.” CrazyBulk USA, https://crazybulk.com/products/ibuta-677. Accessed 22 Dec. 2024.
8. “Christian Winther Gave CrazyBulk 1 Star. Check out the Full Review.” Trustpilot, https://www.trustpilot.com/reviews/6765371ec2e66c69af5701a6. Accessed 22 Dec. 2024.
9. Elsawy, Gehan et al. “Effect of choline supplementation on rapid weight loss and biochemical variables among female taekwondo and judo athletes.” Journal of human kinetics vol. 40 77-82. 9 Apr. 2014, doi:10.2478/hukin-2014-0009
10. Benjamim, Cicero Jonas R et al. “Acute and short-term beetroot juice nitrate-rich ingestion enhances cardiovascular responses following aerobic exercise in postmenopausal women with arterial hypertension: A triple-blinded randomized controlled trial.” Free radical biology & medicine vol. 211 (2024): 12-23. doi:10.1016/j.freeradbiomed.2023.11.039
11. “Ligan 4033.” CrazyBulk USA, https://crazybulk.com/products/ligan-4033. Accessed 22 Dec. 2024.
12. “Matthew Rodriguez Gave CrazyBulk 2 Stars. Check out the Full Review.” Trustpilot, https://www.trustpilot.com/reviews/63935ff05873c1cf9fd0a8b4. Accessed 22 Dec. 2024.
13. Mitra, Sudeep et al. “Efficacy of Lingzhi or Reishi Medicinal Mushroom Ganoderma lucidum (Agaricomycetes) Supplementation on Psychological Stress and Selective Fitness Profile Parameters in Female College Students in West Bengal, India.” International journal of medicinal mushrooms vol. 26,11 (2024): 51-64. doi:10.1615/IntJMedMushrooms.2024055300
14. Mohsin, Saima Naz et al. “Prospective Nutraceutical Effects of Cinnamon Derivatives Against Insulin Resistance in Type II Diabetes Mellitus-Evidence From the Literature.” Dose-response: a publication of International Hormesis Society vol. 21,3 15593258231200527. 10 Sep. 2023, doi:10.1177/15593258231200527
15. “Adam Stamm Gave CrazyBulk 5 Stars. Check out the Full Review...” Trustpilot, 29 Jan. 2024, au.trustpilot.com/reviews/65b6eb4553c3ab3a2bc4e164.
16. “Tim Holtets Gave CrazyBulk 2 Stars. Check out the Full Review.” Trustpilot, https://www.trustpilot.com/reviews/663b474f540ede7f30c115e8. Accessed 22 Dec. 2024.
17. Miller, Chris P et al. “Design, Synthesis, and Preclinical Characterization of the Selective Androgen Receptor Modulator (SARM) RAD140.” ACS medicinal chemistry letters vol. 2,2 124-9. 2 Dec. 2010, doi:10.1021/ml1002508
18. Burmeister, Melissa. “Recreational Use of Selective Androgen Receptor Modulators.” Www.uspharmacist.com, 18 June 2020, www.uspharmacist.com/article/recreational-use-of-selective-androgen-receptor-modulators.
19. Verma, Narsingh et al. “Effects of Ashwagandha ( Withania somnifera) standardized root extract on physical endurance and VO 2max in healthy adults performing resistance training: An eight-week, prospective, randomized, double-blind, placebo-controlled study.” F1000Research vol. 12 335. 8 Apr. 2024, doi:10.12688/f1000research.130932.2
20. Dobs, Adrian S et al. “Effects of enobosarm on muscle wasting and physical function in patients with cancer: a double-blind, randomised controlled phase 2 trial.” The Lancet. Oncology vol. 14,4 (2013): 335-45. doi:10.1016/S1470-2045(13)70055-X
21. Vignali, Jonathan D et al. “Systematic Review of Safety of Selective Androgen Receptor Modulators in Healthy Adults: Implications for Recreational Users.” Journal of xenobiotics vol. 13,2 218-236. 10 May. 2023, doi:10.3390/jox13020017

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