Gr. 11 Drug Classifications & Interactions

Penicillin is a commonly prescribed drug used to treat bacterial infections. Into which major pharmacological category does penicillin fall?

Briefly describe the general mechanism of action of analgesic drugs.

A patient is taking an anticoagulant medication to prevent blood clots. They start taking a new medication that increases the anticoagulant effect. This is an example of a(n) ______ drug interaction.

True or False: Polypharmacy, the use of multiple medications simultaneously, always leads to negative drug interactions.

• True

• False

Explain why it is important for patients to inform their healthcare providers about all medications they are currently taking, including over-the-counter drugs and supplements.

Which of the following drug classes primarily works by blocking the reuptake of certain neurotransmitters in the brain to improve mood?

• Antihistamines

• Antidepressants

• Antifungals

• Antivirals

Describe the general mechanism of action of antibiotics.

A patient is prescribed a beta-blocker to lower blood pressure. They also take an over-the-counter decongestant that increases heart rate. This is an example of what type of drug interaction?

• Additive

• Synergistic

• Antagonistic

• Metabolic

True or False: If two drugs have similar mechanisms of action, they will always have a synergistic effect when taken together.

• True

• False

A patient with a bacterial infection is prescribed an antibiotic. They are also taking an antacid to relieve heartburn. Some antacids can interfere with the absorption of certain antibiotics. Based on this information, what potential risk should the patient be aware of?