As a legal men's health company, we can only speak to the "additional anabolics" that are legal for prescription in the US. Typically these would be nandrolone and oxandrolone. Nandrolone is often used for additional strength and muscle gains and is typically prescribed to assist in joint and tendon repair. Oxandrolone tends to have less of a gain in mass than nandrolone, but does certainly increase strength. It is typically prescribed in preventing muscle loss in those who are bed bound (burn victims) and in wasting disease (HIV, etc).

Regarding medication interactions and TRT, no. TRT is literally testosterone REPLACEMENT. Chemically speaking, once the ester is cleaved from the testosterone molecule by the liver, it is exactly bioidentical to the testosterone that your body has naturally produced since birth. So essentially, all medications that are safe to use in men in general are safe to use with men on TRT.

Oxandrolone in normal therapeutic doses is considered safe, though it can be taxing to the liver. We recommend those on oxandrolone limit alcohol and acetaminophen/paracetamol use while on this medication. It can also affect the absorption and metabolism rate of opiates like codeine.

Nandrolone in normal therapeutic doses is also considered safe, and does not have any interactions with the medications mentioned above.