Transparent Labs and Jacked Factory: Advancing Fat Reduction Through Scientific Research and Stimulant Choices

In 2025, Transparent Labs Recomp and Jacked Factory Burn XT have become top contenders among fat burning supplements, with recent reviews and scientific research underscoring their specialized ingredient blends and results. A detailed report from Fortune identifies Transparent Labs Recomp as the leading overall fat burner, highlighting its moderate caffeine dose (125 mg per serving) and the inclusion of proven components like ForsLean (a forskolin derivative), Capsimax (extracted from cayenne pepper), green tea extract, and L-theanine. The product is certified by Informed Choice and is targeted at users who want a balanced fat loss supplement without the intense side effects of high stimulants. According to Jillian Robillard, MS, RD, LDN, a registered dietitian, users paired with diet and exercise have noted increased energy and gradual weight reduction.

Jacked Factory’s Burn XT, known for its thermogenic properties, has also drawn favorable reviews in 2025 thanks to its research-backed formula. The supplement features Acetyl L-Carnitine (700 mg), green tea extract (450 mg), caffeine anhydrous (270 mg), Capsimax cayenne extract (50 mg), and BioPerine (5 mg), all designed to promote fat burning and boost energy. Total Shape's review mentions that users experienced higher energy and reduced hunger, though its substantial caffeine level (270 mg per dose) may not be ideal for those sensitive to stimulants. The product also stands out for its clear labeling and lack of unnecessary fillers or synthetic additives.

For those avoiding caffeine, Transparent Labs Recomp Stim-Free provides a stimulant-free option to the original Recomp. Its formula includes ForsLean, Capsimax, Paradoxine (from green coffee beans), and green tea extract, aiming to aid fat burning and appetite control without stimulants. Dietitian Pete, who personally evaluated the product, reported that the Stim-Free version was gentle, causing neither nervousness nor sleep issues, though it might not deliver the energy surge some want for workouts.

The thermogenic effects of Burn XT have been further supported by a clinical trial, which found it effective for increasing metabolic rate and promoting fat breakdown. The study highlighted Capsimax’s significant role in raising thermogenesis and supporting fat release. The combination of green tea extract and caffeine anhydrous also contributes to a higher metabolism and greater energy output, making Burn XT a popular pick for individuals with active lifestyles.

Both products have undergone assessments for safety and side effects. Users of Transparent Labs Recomp generally reported only minor issues, such as mild caffeine sensitivity or stomach upset when taken without food. For Burn XT, the main side effects were linked to its high caffeine dose, which could cause restlessness, anxiety, or trouble sleeping, particularly if taken late in the day. Nevertheless, when used as recommended alongside a nutritious diet and exercise, both supplements are widely considered safe.

As for cost, Transparent Labs Recomp is priced at $54.99 per 60-capsule bottle, with discounts for subscribers. Burn XT is sold at $29.99 for a 60-count bottle, with bulk purchasing options available. Both brands emphasize value and efficacy, with Transparent Labs promoting its Informed Choice certification and Jacked Factory emphasizing its cGMP-compliant manufacturing.

Ultimately, Transparent Labs Recomp and Jacked Factory Burn XT each offer unique blends to suit varying needs and fitness objectives. Recomp is best for those wanting a moderate, well-researched fat burner, while Burn XT is ideal for those seeking a potent thermogenic effect. As always, it is wise to seek advice from a healthcare provider before starting new supplements, especially for individuals with health conditions or sensitivities.