Lymphoid tissue: T-lymphocytes and the Thymus. The thymus is a primary lymphoid organ found within the superior mediatinum, behind the upper part of the sternum. This organ is active in children, but at the start of puberty, until old age, it starts to atrophy, producing fewer T-cells.
Long Term Effects of Oxycodone on Your Health. 1  Unintentional Overdose. 2  Tolerance and Increased Abuse. 3  Addiction to Oxycodone. 4  Respiratory Problems. 5  Cardiovascular Problems. 6  Long Term Effects in Brain Functioning and Systems. 7  Other Organ Impairments. 8  Withdrawals and Relapse.
If you take oxycodone with any of these medications and you develop any of the following symptoms, call your doctor immediately or seek emergency medical care: unusual dizziness, lightheadedness, extreme sleepiness, slowed or difficult breathing, or unresponsiveness.