A patient who is having a condition of most likely to experience increased drug absorption is drug addiction or drug disorder - a condition in which a patient does not content intaking enough dosage of drug. Instead, he/she wants more and more to the point that he/she does not want to stop intaking such drug he/she is urging. Consequently, this lead to that person experiencing this to encounter brain damage, emotional disturbance, and abnormalities of behavior.
The following substance that mostly being abused are marijuana, nicotine, and alcohol. These are harmful that too much in-take of them leads to addiction.
Therefore, to avoid being addicted to drugs, use these as prescribed by a legit physician.