Purus Labs | Theatrim | 60 Capsules

Purus Labs TheaTrim is a stimulant-based thermogenic built around a simple but clear idea: deliver a sharper fat-loss-oriented energy profile than basic caffeine alone, while keeping the serving size to a single capsule. This is not a comprehensive metabolism formula and it is not a non-stim wellness burner. It is a focused CNS-driven capsule designed to increase alertness, reinforce training or cardio intensity, and add the appetite-blunting, adrenergic feel many users look for during a cut.

The core of the formula is the 278mg InstEnergy-style excitatory blend providing 150mg total caffeine from Infinergy® dicaffeine malate, additional caffeine, and theacrine. That total caffeine amount lands in a moderate practical range per capsule, but the delivery system matters. Infinergy® is an ionically bonded form of caffeine and malic acid, typically yielding about 73% caffeine, designed to slow digestion and absorption compared with a purely fast-acting caffeine source. Mechanistically, caffeine works by antagonizing adenosine receptors, reducing perceived fatigue and increasing downstream catecholamine activity, while the malate component feeds into the Krebs cycle. In the real world, this usually feels less like a single spike and more like a steadier rise.

Theacrine adds another smart layer. Human data on theacrine supports benefits for subjective energy, mood, and focus, especially when paired with caffeine. It interacts with adenosinergic and dopaminergic pathways, which is why it often feels different from simply adding more caffeine. The limitation here is transparency: the formula does not disclose the individual theacrine dose, and the clinically studied range is roughly 50-125mg. So the ingredient choice is strong, but you cannot verify whether it sits in the best-supported range.

Rauwolfia vomitoria extract standardized for rauwolscine is included at 500mcg. That is a serious inclusion despite the small number. Rauwolscine is an alpha-2 adrenergic antagonist associated with a sharper thermogenic feel and stronger stimulant edge than mainstream fat-burn support ingredients. At this dose, experienced users will often notice increased drive, warmth, and appetite suppression; sensitive users may notice overstimulation, especially if stacked with other stimulants.

SAMe at 125mg is an interesting supportive addition. SAMe participates in methylation reactions tied to neurotransmitter metabolism and mood regulation. This is below the doses commonly used in standalone mood-support research, so it is fair to call it supportive rather than clinically dosed. Citrus bioflavonoid complex at 125mg from hesperidin adds antioxidant and vascular-support logic, though again this sits more in the supportive category than as a headline fat-loss driver. White willow bark extract at 80mg standardized to salicin contributes an anti-inflammatory angle and can subtly change how the formula feels, but it is not a major ergogenic ingredient here. Vitamin B12 as methylcobalamin at 250mcg is more of a label-support nutrient than a meaningful performance differentiator unless the user is deficient.

As a system, TheaTrim is built around layered stimulation: immediate and buffered caffeine for energy, theacrine for smoother CNS extension, and rauwolscine for a more aggressive cutting profile. The transparency is mixed. Total caffeine is disclosed at 150mg, which matters most, but the exact split between Infinergy®, added caffeine, and theacrine is hidden inside a proprietary blend. That is better than fully undisclosed stimulant products, but still short of best-in-class open-label standards.

What to expect: day 1 is usually a noticeable uptick in energy, sharper mental engagement, reduced desire to snack, and a leaner stimulant feel than plain coffee. Over 2-4 weeks, the benefits are mostly behavioral and practical rather than cumulative saturation effects: better adherence to a deficit, more productive fasted cardio, and more consistent training drive when calories are lower. This is a useful cutting tool, not a miracle fat-loss ingredient stack.