Page 1 - Reviews - Force Factor, L-Arginine, 150 Capsules - iHerb
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Customer Ratings & Reviews

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4.7
Based on 2,574 ratings
2,082
331
108
31
22
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What customers say
Force Factor L-Arginine, available in a bottle of 150 capsules with a 600 mg dosage per capsule, is highly praised for its quality and effectiveness. Customers appreciate the convenience of the large package and the moderate dosage, which supports cardiovascular health and enhances athletic performance. Many users report improved blood flow, increased energy levels, and better workout results. The supplement is noted for its high-quality ingredients and good packaging. However, some find taking five large capsules at once to be cumbersome. Overall, it is well-received for its benefits in fitness and general well-being.
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ShahMohommod
Silver
Posted on Jul 28, 2025
Bangladesh
194
0
0
12
Verified purchase
I’ve been using Force Factor L-Arginine (150 Capsules) for several weeks now, and I can confidently say this supplement delivers impressive results. As someone who regularly works out and focuses on cardiovascular health, I was looking for a reliable nitric oxide booster to help improve blood flow, endurance, and muscle pumps—and this product exceeded my expectations. Each serving provides a potent dose of L-Arginine, a powerful amino acid known for enhancing nitric oxide production. Within just a few days, I noticed increased vascularity during workouts, quicker recovery times, and improved stamina, both in the gym and throughout the day. My energy levels feel more stable, and my overall performance has definitely improved. What sets Force Factor apart is its clean formulation—no unnecessary fillers, and it’s made in the USA under high-quality standards. The capsules are easy to swallow, and the 150-count bottle offers great value for the price, especially compared to other brands offering similar doses in fewer servings. I also appreciate that it doesn't cause jitters or crashes like some pre-workout formulas. Additionally, I’ve experienced noticeable improvements in circulation, which has been great for heart health and general well-being. Whether you're an athlete looking for better workout performance or someone who wants to support healthy blood flow, this is a supplement worth trying. Overall, Force Factor L-Arginine has become a staple in my supplement routine. Highly recommended for anyone serious about fitness, energy, and cardiovascular support!
BACK-DOOR
Gold
Posted on Oct 19, 2025
United Arab Emirates
689
0
0
48
Verified purchase
Excellent Quality, Fast Delivery & Perfect Packaging! I’m extremely satisfied with this product from iHerb! The quality is absolutely amazing — you can really feel the difference compared to other brands. The packaging was neat, safe, and well-sealed, ensuring the product arrived in perfect condition. Shipping was super fast and reliable, even faster than I expected! Everything came fresh, authentic, and exactly as described on the website. I also appreciate how iHerb always delivers genuine products with great expiration dates and professional packaging. Highly recommend this item to anyone looking for top quality, great value, and trusted delivery service. I’ll definitely order again soon!
MaxMuscle
Posted on Jul 30, 2025
Kuwait
38
0
4
8
Good
Verified purchase
Good vitamin fast results It is important to ensure that the vitamins are taken as directed and in the correct dosage to achieve the best results. Additionally, a balanced diet and regular exercise can further enhance the effectiveness of the vitamins.
KingPepe
Posted on Jul 23, 2025
Israel
20
4
0
1
Good pump, energy, and blood flow
Verified purchase
I use this before workouts and notice better endurance and vascularity. It also helps with circulation during the day. The capsules are a bit large, but manageable. Overall great performance support. ✅ Quality ✅ Size ✅ Ingredient
iHerbCustomer
Posted on Apr 29, 2025
Australia
73
4
0
13
Outstanding Product
Verified purchase
I have only recently started taking this product to assist me with better blood flow. After extensive research on the many L-Arginine products available, Force Factors appeared to have higher quality ingredients than others. Only time will tell how this product works for me, and should I see any positive results, I will come back to this review and update it.
iHerb customer
Posted on Jul 6, 2025
Poland
10
3
2
4
Noticeable Energy and Pump – Solid L-Arginine Support
Verified purchase
I’ve been using Force Factor L-Arginine for a few weeks now, and the results are consistent and impressive. The formula provides a solid dose of L-Arginine, which is known to support nitric oxide production, improving blood flow, stamina, and vascular performance. I primarily take it before workouts and sometimes on an empty stomach in the morning — and I definitely notice better muscle pumps, a slight energy boost, and improved endurance during cardio and lifting. What’s nice is that it doesn’t cause any jitters or crashes like caffeine-based pre-workouts. It also seems to support circulation in general — not just during exercise. I’ve felt a bit more focused and alert, possibly due to better oxygen flow. Capsules are easy to take, and I haven’t experienced any digestive discomfort or bloating, which sometimes happens with other nitric oxide boosters. High quality as well.
cbdc8153-6072-46c4-8b1a-58a4c72bf32d
Tatangclan
Posted on Jun 30, 2025
Australia
22
1
2
8
Take it with care.
Verified purchase
I gave this L-Arginine supplement a try, but unfortunately, I had to stop taking it—even at low doses. It worsened my asthma, gave me stomach aches, and made me feel dizzy. This might just be my personal reaction, but I recommend checking the potential side effects and speaking with a healthcare professional before starting this supplement.
Shereen39
Posted on May 5, 2024
Israel
477
9
3
42
Force Factor's L-Arginine, 3,000 mg, 150 Capsules
Verified purchase
"I've been using Force Factor's L-Arginine for a while now, and I'm extremely satisfied with the results. This product provides a potent dose of 3,000 mg of L-Arginine per serving, which has significantly boosted my workout performance and overall energy levels. I've noticed improved vascularity during my workouts, and my recovery time has also decreased. The 150 capsules per bottle offer great value, and the 600 mg per capsule dosage makes it convenient to adjust as needed. I highly recommend Force Factor's L-Arginine to anyone looking for a top-notch supplement to support their fitness goals!"
vera
Posted on Jan 4, 2026
Netherlands
66
0
0
7
Noticeable boost
Verified purchase
Started taking this daily and felt better pumps and circulation within a week. Capsules are easy to swallow, no stomach issues. Not a miracle, but a solid, reliable L-arginine supplement.
Yosef
Silver
Posted on Jul 26, 2025
Israel
110
0
0
3
great
Verified purchase
good taste, good quality , good workout results and great on the day