Proper Labs Fat Burn Stack - Classic

This stack pairs Clenbuterol with T3 (Liothyronine, also known as Cytomel). Clenbuterol is a beta-2 agonist that raises metabolic rate and core temperature to burn fat directly, while T3 is a synthetic thyroid hormone that pushes the body's overall metabolism into a much higher gear. Run together they are one of the most established non-steroid combinations for aggressive fat loss.

As a guide only and not medical advice, Clenbuterol is commonly started around 20 mcg daily and increased every few days up to the 80 to 120 mcg range, usually on a 2 weeks on, 2 weeks off pattern to limit receptor downregulation. T3 is often introduced from 25 mcg daily and titrated up to 75 to 100 mcg over the first few weeks, then tapered down rather than stopped abruptly. Both compounds respond to individual tolerance, so anyone considering this stack should research dosing carefully before starting.

It suits lifters already lean and disciplined with their diet and cardio who want to push through a stubborn cut or sharpen conditioning ahead of a shoot or show. It is an aggressive combination, not a beginner fat loss tool, and it works best layered on top of a structured calorie deficit rather than relying on it to do the work alone. It is not intended for anyone new to thermogenics or thyroid compounds.

Clenbuterol commonly brings jitters, elevated heart rate, sweating, and disrupted sleep, especially as the dose climbs. T3 carries a real risk of muscle loss and metabolic crash if it is stopped suddenly rather than tapered, and it can affect natural thyroid output during use. Many users pair this stack with a taurine and potassium-rich diet to manage cramping, and anyone with a heart or thyroid condition should not use these compounds without speaking to a doctor first.

Clenbuterol and T3 are not anabolic steroids, so they do not suppress natural testosterone the way a steroid cycle does and a full PCT protocol is not required. T3 does affect your own thyroid gland, though, which is why it should always be tapered off rather than stopped cold. If this stack is run alongside actual anabolic compounds, PCT needs are driven by those compounds, not by the Clen or T3 themselves.

Every Proper Labs item in this stack comes from genuine stock with a verification check-code on the box so you can confirm authenticity on arrival. Orders go out from the UK on Royal Mail Tracked 24 in plain, discreet packaging, with same-day dispatch if you order before midday on a working day. Most UK customers see their stack land within 1 to 2 working days.