Comprehensive Guide to Pharmacy Operations: Disposal, Regulations, and Controlled Substances

Medication Disposal and Regulatory Oversight

Proper medication disposal is the process of getting rid of disposable medications effectively. This process is highly regulated, especially regarding whether medications are hazardous, non-hazardous, or chemotherapy (cytotoxic) medications.

• Hazardous Medication Disposal Protocol:

  • Hazardous medications should not travel through high-traffic areas.
  • Personal Protective Equipment (PPE), including gowns, gloves, and masks, must be removed immediately after compounding.
  • Used PPE and cleaning supplies go into a dedicated, impermeable hazardous waste bag where nothing can get in or out.
  • Two layers of PPE are often used: one removed in the room, the other after exiting.
  • Discarded items must be placed in a specific container designated for hazardous drugs.

• Regulatory Agencies:

  • Drug Enforcement Agency (DEA): The federal agency that regulates and enforces the disposal and handling of controlled substances.
  • US Department of Transportation (DOT): Regulates how hazardous medications are transported and shipped. Hazardous materials are restricted from certain residential roads or areas near schools to prevent environmental spills during transport.
  • Environmental Protection Agency (EPA): Enforces the Resource Conservancy and Recovery Act of 1976, the primary US law covering the disposal of solid and hazardous waste. The EPA dictates whether waste is sent to a landfill, incinerated, or otherwise disposed of.

EPA Categories of Hazardous Medication Waste

The EPA has developed three specific categories to classify hazardous waste from medications:

• P-list (Acutely Toxic):

  • Includes pure and commercial-grade formulas (the raw drug before additives like flavoring or coloring).
  • Low doses and even empty containers can be considered hazardous due to residue.
  • Examples: Nicotine, Warfarin, and Epinephrine.

• D-list (Toxic, Ignitable, and Corrosive):

  • Key characteristics: Ignitablity (potential to catch fire) and corrosivity.
  • Often contains mercury or other small amounts of metals (e.g., aluminum).
  • Includes all aerosols (inhalers/sprays) and medications containing alcohol used as a preservative (common in injectables and oral mouth flushes).

• U-list (Toxic and Discarded):

  • Usually chemotherapy/cancer-fighting medications, also referred to as cytotoxic material.
  • Includes discarded medications and their empty containers.
  • Examples: Cyclophosphamide and Mitomycin.

Disposal of Sharps and Controlled Substances

Specific methods are required for materials that pose a physical or chemical risk.

• Sharps Disposal:

  • Includes syringes, needles, and broken glass or laboratory beakers.
  • Containers must be: Upright, red, leak-proof, puncture-resistant, closable, lockable, and display the biohazard symbol.
  • Containers should only be filled to $75\%$ capacity to prevent needle sticks. Needles should be dropped in, never pushed or shoved.
  • Once a sharps container is locked, it cannot be reopened.

• Destruction Standards:

  • Pharmaceuticals must be rendered non-retrievable in compliance with federal, state, local, and tribal laws.
  • The DEA requires the end result to be non-retrievable (e.g., incinerated to ash) so it cannot be reformulated or recalculated back into a drug.

• Witnessing Disposal:

  • Hospital settings: Two pharmacists or nurses must witness the disposal.
  • Community/Retail settings: A pharmacist, local law enforcement, or the Bureau of Narcotics and Dangerous Drugs witnesses the disposal. Controlled substances are often manually counted during disposal (e.g., counting 2,000 pills individually).

• HNC Rule (Hazardous, Non-hazardous, and Controlled):

  • Hazardous: Special containers and PPE required.
  • Non-hazardous: Still regulated (not treated as standard trash); requires gloves and ideally a mask to avoid breathing in powder if a bag breaks.
  • Controlled: Strict DEA rules and documentation required.

Patient and Consumer Medication Disposal

Consumers do not follow the same strict protocols as pharmacies but are given specific instructions for safety:

• Patients are often instructed to place medications in a Ziploc bag with coffee beans or kitty litter to deter children/animals before disposal in regular trash.
• Pharmacies sell specialized medication disposal packaging that seals the drugs.
• DEA Buyback/Disposal Days: Patients can look up dates on dea.gov to drop off old medications for free disposal.
• DEA Flush List: Specific highly addictive or dangerous medications should be flushed to avoid them being scavenged from trash. These include:
  • Buprenorphine, Fentanyl, Hydrocodone, Benzhydrocodone, Hydromorphone, Methadone, Morphine, Oxycodone, Oxymorphone, and Tapentadol.

Pharmacy Fraud, Waste, and Abuse (FWA)

HIPAA and the CMS regulate and investigate fraudulent activities to protect the healthcare system.

• Fraud: Intentional deception, misrepresentation, or criminal acts made for unauthorized benefit. Example: Billing for services never provided.
• Waste: Over-utilization or misuse of resources resulting in unnecessary costs. Often considered an error or inefficiency, such as over-ordering supplies. It becomes criminal if materials are falsely claimed as waste to cover theft.
• Abuse: Professional medical or business standards that are inconsistent and cause unnecessary costs, such as "upcoding," which is billing patients more than is appropriate.
• Medicare and CMS Regulations: The Centers for Medicare and Medicaid Services (CMS) is part of the US Department of Health and Human Services. CMS requires all Medicaid prescriptions to be written on tamper-resistant pads that show the word "void" if copied to prevent alteration.

Identification and Verification of Controlled Substance Prescriptions

Prescriptions for controlled substances must meet high standards for validity to prevent health care fraud.

• Red Flags for Pharmacy Fraud:

  • Prescriptions written in any ink other than black ink.
  • Unusually large quantities (e.g., $90$ or $100$ capsules of Oxycodone).
  • Incorrect abbreviations or misspellings.
  • Unauthorized refills on Schedule II medications.

• Required Prescription Elements:

  • Date filled.
  • Patient’s full name and address.
  • Prescriber’s name, address, phone number, and DEA number.
  • Drug name, strength, dosage form, quantity, and indication.
  • Number of refills and directions for use.
  • Manual or electronic signature of the prescriber.

The Controlled Substance Act of 1970 and DEA Numbers

The Controlled Substance Act categorizes drugs into five schedules and requires all handlers (manufacturers, distributors, doctors, pharmacies) to register with the DEA.

• DEA Number Structure: Consists of two letters followed by seven numbers.

  • First Letter (Registrant Type):
    • A: Used by entities older than 1985.
    • B: Hospitals or Clinics.
    • C: Practitioners (Physicians, Dentists, Veterinarians).
    • D: Teaching Institutions.
    • E: Manufacturer.
    • F: Distributor.
    • G: Researcher.
    • L: Reverse Distributor.
    • M: Mid-level practitioners (Nurse Practitioners, Physician Assistants).
    • X: Narcotics Treatment Programs.
  • Second Letter: Usually the first letter of the registrant's last name or organization name.

• DEA Numerical Verification Equation:

  • Step 1: Add the $1^{st}$, $3^{rd}$, and $5^{th}$ digits.
  • Step 2: Add the $2^{nd}$, $4^{th}$, and $6^{th}$ digits.
  • Step 3: Multiply the sum from Step 2 by $2$.
  • Step 4: Add the result from Step 1 and Step 3 together. The last digit of this final sum must match the $7^{th}$ digit of the DEA number.

Federal DEA Documentation and Forms

All documentation regarding controlled substances must be kept on file for at least $2$ years ($3$ years in Texas).

• DEA CSOS: The electronic Controlled Substance Ordering System.
• DEA Form 222: Used for ordering or transferring Schedule II medications. It requires three copies: one for the pharmacy, one for the supplier, and one for the DEA.
• DEA Form 41: Used for the disposal or "wasting" of controlled substances.
• DEA Form 106: Used to report the theft or loss of controlled substances.

Scheduling of Medications

• Schedule I (C-I): Illegal, no accepted medical use, and high potential for abuse. Examples: MDMA (Ecstacy), synthetic marijuana, bath salts, peyote, Heroin, and LSD.
• Schedule II (C-II): High potential for abuse and dependence. No refills are allowed. If a pharmacy cannot fill the full amount, the prescription is voided after $72$ hours. Must be stored in a double-locked, tamper-proof narcotics cabinet secured to the floor/wall. Examples: Methadone, Oxycodone, Fentanyl, Hydrocodone, Methamphetamine, and Cocaine (used for limited scientific research).
• Schedule III (C-III): Moderate to low potential for dependence. Allowed $5$ refills within a $6$-month period. Can be received by phone if transcribed by a pharmacist. Examples: Testosterone, Anabolic steroids, and Acetaminophen with Codeine.
• Schedule IV (C-IV): Low potential for abuse. Used for insomnia, anxiety, and seizures. Refill limits and transcription rules are the same as Schedule III. Examples: Xanax (Alprazolam), Valium, Ativan, and Ambien.
• Schedule V (C-V): Low potential for abuse; often contains codeine in cough syrups (antitussives) or antidiarrheals.

The Combat Methamphetamine Act of 2005

Regulates the sale of pseudoephedrine, ephedrine, and phenylpropanolamine because they are precursors to making methamphetamine.

• Purchase Limits:
  • $3.6\,\text{g}$ per day per person.
  • $9\,\text{g}$ in a $30$-day cycle.
  • $7.5\,\text{g}$ per month if shipped via mail order.
• Requirements: Products must be kept behind the pharmacy counter. Customers must show an ID. Sales must be logged with the customer’s name, address, date, time, and quantity.
• Prescription Drug Monitoring Program (PDMP): A state-wide system used by doctors and pharmacists to track a patient's controlled substance history to prevent opioid abuse.

Dosage Forms and Routes of Administration

• Solids:
  • Tablets: Entirely composed of medication. Enteric-coated tablets have a polymer barrier to survive stomach acid and dissolve in the small intestine.
  • Capsules: Oblong gel containers with medication inside. Sustained-release capsules leach drug out at a gradual rate.
  • Suppositories: Melt after insertion into the rectum, vagina, or urethra.
• Semisolids:
  • Ointments: Medications mixed with petroleum jelly; lubricate and protect skin.
  • Creams: Water and oil combinations; less greasy than ointments.
  • Pastes: Stiff ointments with at least $20\%$ solid material that do not melt at body temperature.
• Solutions:
  • Syrups: Concentrated sugar in water.
  • Elixirs: Clear solutions with water, alcohol ($5\text{--}40\%$), and flavoring.
  • Tinctures: Prepared from vegetable or chemical substances containing $17\text{--}80\%$ alcohol.
  • Suspensions: Liquids containing undissolved solid particles; must be shaken before use.

Abbreviations and Calculations

• Routes:
  • $AD$: Right ear; $AS$: Left ear; $AU$: Both ears.
  • $OD$: Right eye; $OS$: Left eye; $OU$: Both eyes.
  • $PO$: By mouth; $PR$: Rectally; $PV$: Vaginally.
  • $SL$: Sublingual; $IM$: Intramuscular; $IV$: Intravenous.
• Frequency:
  • $AC$: Before meals; $PC$: After meals.
  • $BID$: Twice daily; $TID$: Three times daily; $QID$: Four times daily.
  • $PRN$: As needed; $QHS$: At bedtime/every hour of sleep.
• Dosage Calculations:
  • $1\,\text{drop (gtt)} = 0.5\,\text{mL}$.
  • One $5\,\text{mL}$ eye drop bottle contains $100\,\text{drops}$.
  • Day Supply: $\text{Total Quantity} / (\text{Dose per day} \times \text{Frequency})$.
  • Weight-Based Dosing: $\text{Patient Weight (kg)} \times \text{Dose per kg} = \text{Total Daily Dose}$.
  • $1\,\text{kg} = 2.2\,\text{lbs}$.