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Fastin-XR is one of the market's most intensely formulated thermogenic fat burners — designed to ignite metabolism, amplify mental energy, and support rapid fat loss through sustained-release technology. Powered by advanced stimulant compounds like 2-Aminoisoheptane, methylsynephrine, phenylethylamine alkaloids, and caffeine, this formula delivers long-lasting energy, mood elevation, and appetite suppression to keep you lean and focused all day long.
Fastin-XR isn't a beginner's tool — it's a serious tool for those ready to dial up the intensity and demand maximum results.
⚡ Extended-release high energy for hours
🔥 Hardcore thermogenesis & fat oxidation
🚫 Powerful appetite suppression
🧠 Elevated mood, clarity & motivation
💪 Enhanced workout performance and fat loss results
⏳ No crash due to layered stimulant absorption
Advanced users with high tolerance to stimulants
Bodybuilders or athletes during the cutting phases
Individuals seeking rapid fat-burning support
Anyone wanting an extreme thermogenic edge
People who prefer long-lasting energy and focus
Fastin-XR is an intensely formulated thermogenic fat burner designed to ignite metabolism, amplify mental energy, and support rapid fat loss through sustained-release technology.
Take one capsule in the morning with water. Depending on stimulant tolerance, a second capsule can be taken 6-8 hours later.
Senegalia Berlandieri Extract (leaves), yielding 200mg of PEA Alkaloids, is a botanical source of Phenylethylamine (PEA) and its analogues, including Methylsynephrine, N-Methyl-B-Phenylethylamine, N,N-Dimethylphenylethylamine, and Phenylethylamine itself.
2-Aminoisoheptane HCl (2-amino) is a CNS stimulant that boosts metabolic rate, reduces fatigue, suppresses appetite, and provides an energy rush, ideal for training or fasted cardio.
Synephrine HCl is a thermogenic compound that helps stimulate fat breakdown through beta-3 receptor activation.
Theobromine is a mild xanthine alkaloid from cocoa that supports smooth energy release, vasodilation, and diuretic effects, complementing caffeine’s stimulation.
5-Methoxytryptamine HCl is a serotonin precursor that promotes mood balance and well-being, especially valuable when dieting or cutting.
Yohimbine HCl is an alpha-2 adrenergic blocker that helps release stubborn fat, especially during fasting or exercise, and also increases adrenaline, thermogenesis, and energy output.
Fastin-XR contains 150mg of Caffeine Anhydrous, a base stimulant delivering increased endurance, metabolic rate, and sharp mental focus.
Fastin-XR is designed for advanced users with high stimulant tolerance who are ready to dial up the intensity and demand maximum results.
CrossTheLimits is proud to announce that it has become an official distributor of Hi-Tech Pharmaceuticals products in the United Kingdom! This partnership with Hi-Tech Pharmaceuticals allows CrossTheLimits to offer cutting-edge supplements and nutritional products directly to fitness enthusiasts and dedicated athletes across the UK.
Hi-Tech Pharmaceuticals is renowned for its commitment to innovative formulations that deliver tangible results. As industry leaders, they have consistently set the standard for high-quality supplements that support a range of fitness goals, from muscle building and weight management to enhanced endurance and recovery.
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