Many competitors also find the fat burning effect of clenbuterol can be further enhanced by additional substances. When combined with thyroid hormones, specifically the powerful Cytomel®, the thermogenic effect can become extremely dramatic. This can be to a point that the athlete could shred exceptional amounts of extra fat during contest preparations, without a dramatic restriction in calories. Such a mix can be further used during a steroid cycle, eliciting a much harder look from the anabolics. These cutting agents can often greatly inhibit extra fat storage during the cycle, even when using strong aromatizing androgens. A clenbuterol/thyroid mix is also common when using growth hormone, further enhancing the thermogenic and anabolic effect of this therapy.