Customer Ratings & Reviews

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4.4

Based on 16,955 ratings

11,627

2,504

1,656

581

587

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What customers say

Customers generally report positive experiences with Force Factor LeanFire®, highlighting its effectiveness in boosting energy and aiding weight management when combined with diet and exercise. Many users appreciate the clean energy boost without jitters, improved focus during workouts, and appetite suppression throughout the day. The product's quality is frequently praised, with ingredients considered high-quality and well-chosen. The capsule size is easy to swallow, and the neutral taste makes it comfortable to take. However, some users experienced jitteriness when combining it with other caffeine sources like coffee. While most reviews are favorable, a few customers did not notice significant effects on weight loss or energy levels. Overall, the supplement is recommended for those seeking an extra edge in their fitness routines.

Review highlights

Top positive review

Yahya

Posted on Apr 1, 2024

Jordan

the best one

take this one, and do not look back, I used it one time, and I ordered 2 more. Firstly, I use it, and I lost 3 kg fat, only fat.. once i use Lipo 6, I start to feel angry, aggressive ( not OK for me, maybe OK for u).. i ordered 2 more Leanfire. unbeatable one... I will tell you about next week, Sunday 7th April 😍😍

Top critical review

iHerb customer

Posted on Feb 5, 2024

United Arab Emirates

I will upload weekly weight loose

Right now me weight is 71.2kg, i will start to take this but with Intermittent fasting and maybe along with some exercise, however please remind me to write the review by putting a like, so the quality of the product looks good, but the size is small, however the dosage i will start with only one daily so it can last a month, taste kinda okay, but i hope to get a high benefit from this product.

(16,806)

Dan

Posted on Jun 5, 2025

Austria

Effective Energy Boost with Mild Side Effects

Verified purchase

I've been using Force Factor LeanFire for a few weeks now and have noticed a significant increase in my energy levels, especially during workouts. The appetite suppression is also quite effective, helping me stay on track with my diet. However, I did experience some mild stomach discomfort initially, which subsided after a few days. Overall, it's a solid supplement for those looking to enhance their fitness routine, but be mindful of potential side effects.

MohaymenOmar

Posted on Sep 17, 2025

United States

Good stuff

Verified purchase

I’ve been using this supplement for a little while now, and I’m genuinely impressed with the results. I’ve already started noticing some weight loss, even if it’s just a little, and that’s a big step forward for me. What stands out the most is the boost in energy—I feel more active and motivated throughout the day, which makes it easier to stay consistent with my routines. Overall, this supplement has been a great addition to my lifestyle, and I’m excited to see how the progress continues.

iHerbCustomer

Posted on Jul 15, 2025

United States

Good

Verified purchase

I have been using vitamins from iHerb for several times, and each time I am satisfied with the quality. Excellent composition, without unnecessary additives, well absorbed and really give an effect. I feel a surge of energy, my overall health has improved and my immunity has strengthened. Convenient form of release is easy to take. The order arrived quickly, everything is neatly packaged. I will order more!

Simona

Silver

Posted on Jan 8, 2026

Germany

213

Perfekt!

Verified purchase

Right from the first week I noticed a clean energy boost without feeling shaky or jittery — just enough to keep me moving through workouts and daily tasks. My appetite was reduced, especially mid-afternoon cravings, which helped me stick to my calorie goals better. iHerb

Emoke

Posted on Oct 7, 2025

Romania

Lean free charged my life !

Verified purchase

The benefit of this product is absolutely over my expectations! Fair dosage and size with healthy ingredients ,is absolutely the best way to start a healthy energy full diet ,results seen already afrer a few days ! Not the taste that makes it really good rather the quality! Keep your energy high and your appetite low ! I recommend 👌

iHerb customer

Posted on Sep 15, 2025

Cyprus

Excellent energy and visible results!

Verified purchase

I've been using LeanFire for about two months now, and I'm genuinely impressed! Right from the first few days, I noticed a clean and sustained boost in my energy levels, without the jitters or nervousness that other similar products can cause. It has been a great help during my workouts, giving me the drive I needed to push myself a little harder. Most importantly, when combined with a healthy diet and exercise, I've seen a clear difference in my weight management and a reduction in body fat. The dosage is very convenient, and the capsule size is easy to swallow. The ingredients feel high-quality, and the formula seems well-thought-out. This is definitely a product worth its price, and I will be purchasing it again!

Rimoouae

Gold

Posted on Jul 26, 2025

United Arab Emirates

1,458

Verified purchase

I’ve been using this product for a while now, and I can honestly say it’s made a real difference. It’s very effective and delivers exactly what it promises. I feel better and more balanced since I started taking it. Definitely worth trying

Yahya

Posted on Apr 1, 2024

the best one

Verified purchase

iHerb customer

Posted on Aug 4, 2025

Germany

Чудово!

Verified purchase

I used Force Factor LeanFire for about 6 weeks—typically one capsule in the morning before breakfast along with regular exercise and calorie awareness. I experienced noticeably reduced cravings, especially for sweets, and felt warmer after taking it—like a mild metabolism boost. Over time, I lost around 3 kg of fat and reduced my waist by a couple of centimeters. It tastes neutral and is easy to swallow. I tried 2 capsules/day but it affected my sleep, so I settled on 1 capsule only in the morning. Results aren’t dramatic: it supports appetite control and energy, but it’s not a magic solution. Best when paired with consistent diet and activity

iHerbCustomer

Posted on Oct 29, 2025

Norway

High-Quality, Potent Thermogenic for Focused Energy & Fat Loss

Verified purchase

Force Factor's LeanFire is a potent, fast-acting thermogenic formula designed for adults seeking a powerful boost for both energy and weight loss. I used it during a cutting phase to help break through a plateau. The bottle contains 30 vegetable capsules, a one-month supply if used daily. The capsules are standard size and easy to swallow, which is great for a complex formula. The ingredient profile is robust and built around a 700 mg proprietary "Thermovigilance® Weight Loss Matrix." This matrix includes several key, clinically studied ingredients: · Verilean® Green Coffee Bean Extract: Promotes weight loss by supporting metabolism. · 150 mg Caritaine (Caffeine Anhydrous): Provides a strong, immediate energy and focus boost. · L-Theanine: A brilliant addition that smooths out the caffeine's edge, promoting focused energy without the jitters. · Cayenne Pepper, Garcinia Cambogia, Green Tea Extract: These add a thermogenic effect, helping to increase calorie burn. The effects are pronounced. Within 20-30 minutes of taking one capsule in the morning, I experienced a significant surge in clean, focused energy and mental alertness. It effectively crushed my appetite and provided a noticeable thermogenic "heat" sensation, indicating my metabolism was firing up. It's highly effective for suppressing cravings and powering through workouts. Due to the 150 mg of caffeine per serving, it is quite strong. It's best for experienced stimulant users and should be taken early in the day to avoid disrupting sleep. The value is aligned with other premium thermogenic formulas on the market. Pros: · Provides powerful, clean energy and mental focus. · Effective appetite suppression and thermogenic effect. · Contains L-Theanine to minimize jitters. · Features clinically studied ingredients like Verilean®. · Vegetable capsules. Cons: · High caffeine content (150 mg) may be too strong for some. · Not suitable for caffeine-sensitive individuals. · Must be taken early to avoid interfering with sleep. · Only a 30-day supply.

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