T3

T3 is liothyronine sodium (triiodothyronine), a fast-acting synthetic thyroid hormone, supplied here as 25mcg tablets. It raises your metabolic rate directly, which increases energy expenditure and speeds up fat burning. It is not an anabolic steroid, it works through the thyroid system rather than the androgen receptor.

As a guide only and not medical advice, users commonly start around 12.5mcg (half a tablet) per day for the first week, then move up to 25mcg per day if it is tolerated well. Cycles usually run 4 to 6 weeks, with the dose tapered back down gradually at the end rather than stopped abruptly. This is not a beginner compound, and anyone considering it should read up thoroughly and speak to a doctor first.

Because it drives up metabolism, common reports include a faster heart rate, sweating, anxiety or jitteriness, and muscle loss if the dose runs too high for too long. Extended use can also suppress your body's own thyroid output, which is why tapering off at the end of a cycle matters. Bloodwork covering TSH, free T3 and free T4 before and during use is the sensible way to keep an eye on things.

T3 is frequently paired with cardarine to help protect muscle mass and support a healthier lipid profile while cutting, and often with a testosterone base to stop the catabolic pull of the thyroid hormone from eating into lean tissue. Running T3 completely on its own increases the risk of muscle wasting for most users. It is also sometimes combined with Clenbuterol for extra fat loss, though this stacks the cardiovascular load higher.

T3 does not suppress the hormones a standard PCT is designed for, so a PCT compound is not required on its own. What it does need is a proper taper at the end of the cycle, easing the dose down rather than stopping cold, to let your natural thyroid function come back online.

Every box is authentic Proper Labs stock with a verification check-code you can confirm on arrival. Orders are dispatched from our UK warehouse via Royal Mail Tracked 24 in plain, discreet packaging, and most customers across the UK see delivery within 1 to 2 working days. Get your payment through before midday on a working day and it goes out the same day.