Propranolol is a beta-blocker, which means it blocks the effects of adrenaline on beta-adrenergic receptors.

Paracetamol works by inhibiting cyclooxygenase, an enzyme involved in the production of prostaglandins, which are responsible for pain and inflammation.

ACE inhibitors are a class of drugs that lower blood pressure by inhibiting the renin-angiotensin-aldosterone system, which regulates blood pressure.

Statins work by inhibiting HMG-CoA reductase, an enzyme involved in cholesterol synthesis, thereby reducing cholesterol levels in the blood.

Dopamine agonists are a class of drugs that work by increasing the levels of dopamine in the brain, which is associated with motor control and reward pathways.

NSAIDs work by inhibiting cyclooxygenase, an enzyme involved in the production of prostaglandins, which are responsible for pain and inflammation.

Anticholinergics are a class of drugs that work by blocking the effects of acetylcholine at muscarinic receptors, which are involved in various bodily functions such as salivation, sweating, and gastrointestinal motility.

PPIs work by inhibiting the secretion of gastric acid, which is useful in treating conditions such as peptic ulcers and gastroesophageal reflux disease (GERD).

Antidepressants are a class of drugs that work by increasing the levels of serotonin and/or norepinephrine in the brain, which are associated with mood regulation.

Diuretics work by inhibiting sodium-potassium ATPase, a pump that helps regulate fluid and electrolyte balance in the body, leading to increased urine output and decreased blood pressure.

Antihistamines are a class of drugs that work by blocking the effects of histamine at H1 receptors, which are involved in allergic reactions and other conditions.

Calcium channel blockers work by blocking the influx of calcium ions into cells, which is important for muscle contraction and nerve impulse transmission.

Opioid analgesics are a class of drugs that work by activating opioid receptors, which are involved in pain perception and modulation.

Benzodiazepines work by enhancing GABAergic neurotransmission, which has calming and anxiolytic effects.

Antipsychotics are a class of drugs that work by blocking the effects of dopamine at D2 receptors, which is important in the treatment of schizophrenia and other psychotic disorders.