TL;DR

DEA Controlled Substance Schedules: Five-tier classification: I (heroin), II (oxycodone), III (testosterone), IV (benzodiazepines), V (codeine cough preps).

By Valenke Exam Prep Team·Last updated 2026-06-02

DEA Controlled Substance Schedules

PTCB

Definition

Five-tier classification: I (heroin), II (oxycodone), III (testosterone), IV (benzodiazepines), V (codeine cough preps).

Differential Diagnosis

Distinguishing between related concepts for dea controlled substance schedules:

Fluoroquinolones: Examples: ciprofloxacin, levofloxacin, moxifloxacin. Mechanism: Inhibit bacterial DNA gyrase and topoisomerase IV, bactericidal. Key side effects: Tendon rupture (Achilles); QT prolongation.

ACE inhibitors: Examples: lisinopril, enalapril, ramipril. Mechanism: Block angiotensin-converting enzyme, decrease angiotensin II, cause vasodilation and decreased aldosterone. Key side effects: Dry cough (10-15%); Hyperkalemia.

Step-by-Step Procedure

Five-tier classification: I (heroin), II (oxycodone), III (testosterone), IV (benzodiazepines), V (codeine cough preps). DEA schedule identification and prescribing restrictions tested on PTCB exam.

Related drug class: ACE inhibitors includes lisinopril, enalapril, ramipril. Mechanism: Block angiotensin-converting enzyme, decrease angiotensin II, cause vasodilation and decreased aldosterone.

Equipment & Tools

Five-tier classification: I (heroin), II (oxycodone), III (testosterone), IV (benzodiazepines), V (codeine cough preps). DEA schedule identification and prescribing restrictions tested on PTCB exam.

Related drug class: Fluoroquinolones includes ciprofloxacin, levofloxacin, moxifloxacin. Mechanism: Inhibit bacterial DNA gyrase and topoisomerase IV, bactericidal.

Regulatory Context

Regulatory framework for dea controlled substance schedules in pharmacy:

Schedule II: High abuse potential with accepted medical use. Examples: oxycodone, fentanyl, morphine, amphetamine, methylphenidate. Storage: Double-locked, perpetual inventory, no refills, written/electronic Rx only
Schedule III: Moderate abuse potential. Examples: testosterone, ketamine, Tylenol with codeine. Storage: 5 refills in 6 months, written/oral/electronic Rx

Why It Matters

DEA schedule identification and prescribing restrictions tested on PTCB exam.

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Frequently Asked Questions

What DEA schedule considerations apply to dea controlled substance schedules?▼

For dea controlled substance schedules: Schedule III: Moderate abuse potential (testosterone, ketamine, Tylenol with codeine). Schedule II: High abuse potential with accepted medical use (oxycodone, fentanyl, morphine, amphetamine, methylphenidate).

What sig codes are commonly seen with dea controlled substance schedules prescriptions?▼

For dea controlled substance schedules: PRN = as needed, TOP = topically, AU = both ears, QD = once daily, QID = four times daily.

What drug interactions should be monitored for dea controlled substance schedules?▼

For dea controlled substance schedules: Beta blockers (metoprolol, atenolol, propranolol, carvedilol): Bradycardia; Fatigue; Bronchospasm (non-selective); Mask hypoglycemia symptoms. Always check for drug interactions before dispensing.