AI stands for aromatase inhibitor. Some people will use the term estrogen blocker or anti-e(strogen). Some commonly used aromatase inhibitors are: Invalid Link Removed, Invalid Link Removed, Invalid Link Removed, and Invalid Link Removed. Plz note that some of these links are to products that contain more than just this particular ai that I listed.
HCG stands for human chorionic gonadotropin: Invalid Link Removed
PCT stands for post cycle therapy. Here is the sub forum for pct: Invalid Link Removed
...and AI might also stand for Anabolic Innovations. We have some products that are often used during cycles and pct. POST Cycle Support is often referred to as PCS, which is used during post cycle therapy for its estrogen regulation properties and its test boosting effects.