

Manufacturer: Abdi Ibrahim
Substance: Levothyroxine & Liothyronine
Pack: 100 tabs (50+12.5mcg/tab)
If your goal is to get leaner, harder, and stage-ready, Bitiron (T3-T4) by Abdi Ibrahim is a serious weapon in your fat-loss arsenal. This unique blend combines Liothyronine (T3) and Levothyroxine (T4), the two main thyroid hormones responsible for regulating metabolism, energy expenditure, and fat burning. Unlike using T3 or T4 alone, Bitiron offers a balanced approach – hitting both fast-acting and longer-lasting thyroid pathways for a steady, effective cut.
Bodybuilders know that when calories drop and cardio rises, metabolism can stall. Bitiron helps keep the furnace burning by elevating your thyroid output, ensuring your body keeps shredding fat even deep into a prep. By boosting calorie expenditure at rest, it allows you to burn more fat without having to keep slashing food or adding endless cardio. This makes it a favorite among competitive athletes aiming for that dry, peeled look without sacrificing too much muscle mass.
Inside your body, T4 (Levothyroxine) acts as a storage hormone, gradually converting into T3 (Liothyronine), which is the active form responsible for metabolism acceleration. By combining both in one product, Bitiron gives you immediate metabolic enhancement from T3, while the T4 extends the fat-burning effect for hours. This synergy reduces sharp energy crashes and creates a more sustainable fat-loss environment.
Advanced users typically start low (e.g., 25 mcg/day) and gradually increase based on tolerance. Cycles often run 6–8 weeks during cutting phases. It's commonly stacked with Clenbuterol for an extreme fat-loss combo, or with Anavar to preserve muscle and hardness while stripping fat. As always, smart cycling and tapering down is recommended to support thyroid recovery.
Feature | Bitiron (T3+T4) | Cytomel (T3) | Levothyroxine (T4) |
---|---|---|---|
Composition | T3 + T4 | T3 only | T4 only |
Speed of Action | Immediate + sustained | Fast-acting | Slower, long-lasting |
Best Use | Cutting cycles, stage prep | Rapid fat loss, short-term | Long-term thyroid support |
Crash Risk | Low-moderate | Higher | Low |
It accelerates metabolism, burns fat at rest, and helps prevent diet-induced metabolic slowdown.
Yes, many bodybuilders stack Bitiron with Clen for maximum fat loss during contest prep.
Not if stacked correctly. Using anabolic support like Anavar or Test can help preserve muscle mass.
Most cycles last 6–8 weeks, with gradual tapering to support thyroid recovery afterward.
It's a strong compound and best for intermediate to advanced users. Beginners should research thoroughly before use.
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