This is what they have listed on their LGD page:
GAIN (LGD-4033) is anticipated to yield the healing benefits of testosterone with better safety, admissibility and patient acceptance due to tissue-selective mechanism of action and its oral form of administering. It is non-toxic and the side effects are very minimal. Thus, using LGD-4033 is recommended if you want to bulk up and drop fat sans steroids as we all know steroids have harsh side effects.It won’t affect your liver
but a full PCT is advised after running LGD-4033. The suppression is higher than other SARMS (but lower than anabolics), thus the need for PCT. Please view our PCT section for a full suite of PCT products.