Final answer:
Psychoactive drugs and parasympathetic drugs can create side effects like dry eyes, dry mouth, and difficulty urinating.
Step-by-step explanation:
The drugs that create side effects such as dry eyes & mouth, difficult urinating & defecating can belong to different classifications. One possible classification is psychoactive drugs. Psychoactive drugs, such as stimulants, depressants, and hallucinogens, can have multiple effects and may cause side effects like dry eyes, dry mouth, and urinary difficulties.
Another classification is parasympathetic drugs. These drugs can affect parasympathetic functions and either increase or decrease activity at postganglionic terminals. Some parasympathetic drugs can cause side effects like difficulty urinating due to their effects on the cholinergic system.
Overall, it's important to consult a healthcare professional or pharmacist for accurate information on specific drugs and their potential side effects.