Final answer:
Anticholinergic drugs can cause dry mouth, constipation, drowsiness, tremors, muscular rigidity, and a rare side effect called tardive dyskinesia.
Step-by-step explanation:
The drugs that can cause the mentioned side effects are anticholinergic drugs. Anticholinergic drugs inhibit the action of the neurotransmitter acetylcholine in the nervous system. These drugs block certain receptors in the brain and peripheral nervous system, leading to various side effects.
The side effect of dry mouth is caused by a reduction in salivary gland secretion due to decreased acetylcholine activity. Constipation occurs due to decreased gastrointestinal motility caused by the inhibition of acetylcholine in the bowel. Drowsiness is a common side effect of many anticholinergic drugs, as they can cross the blood-brain barrier and affect the central nervous system. Tremors, muscular rigidity, and impaired coordination can occur because of the effects on motor control, resulting in disrupted balance and muscle movement. Tardive dyskinesia, although rare, is an irreversible neurological disorder that can occur with long-term use of certain antipsychotic medications.