"No testicular shrinkage, no reduction on in spermatogenesis will occur whith resonable dosages. Cholesterol triglycerides and total lipids tend to be reduced with long term use as opposed to elevated with most oral steroids.
TU is so popular a steroid that you find Testosterone undecanoate to be the 100 mg part of Omnadren/Sustanon 250 mg Blend, which is one of the most popular injectable steroid"