Pharmacology Drug Stems and Side Effects Review

Nervous System (Central Nervous System - CNS)

  • Drug Classification Stems and Examples:     * -azepam or -zolam: These stems denote Benzodiazepines. Examples of drugs in this class include Diazepam and Lorazepam.     * -triptan: These stems are used for Migraine treatment. An example drug is Sumatriptan.     * -peridol: These stems denote Antipsychotics. An example drug is Haloperidol.     * -barb-: These stems denote Barbiturates. An example drug is Phenobarbital.

  • Common Side Effects:     * Drowsiness     * Sedation     * Dizziness     * Headache     * Respiratory depression     * Confusion     * Tremor     * Dependence

  • Serious Effects:     * Serotonin syndrome: This condition is characterized by symptoms such as agitation, tachycardia, and sweating.

Musculoskeletal System

  • Drug Classification Stems and Examples:     * -statin: These are HMG-CoA reductase inhibitors. A common example is Atorvastatin.     * -dronate: These are Bisphosphonates. A common example is Alendronate.     * -profen: These are Anti-inflammatory agents. A common example is Ibuprofen.     * -caine: These denote Local anesthetics. A common example is Lidocaine.

  • Common Side Effects:     * Myalgia (defined as muscle pain)     * Muscle weakness     * Joint pain

  • Serious Effects:     * Rhabdomyolysis: Described as muscle breakdown.     * Tendon rupture: Associated with the use of fluoroquinolones.     * Decreased bone density: Associated with the long-term use of steroids.

Renal System

  • Drug Classification Stems and Examples:     * -ide: These denote Loop diuretics. An example drug is Furosemide.     * -pril: These denote ACE Inhibitors. An example drug is Lisinopril.     * -sartan: These denote Angiotensin II Receptor Blockers. An example drug is Losartan.     * -vaptan: These denote Vasopressin receptor antagonists. An example drug is Tolvaptan.

  • Common Side Effects:     * Dehydration     * Electrolyte imbalances: Specifically noted are hypokalemia (low potassium) or hyperkalemia (high potassium).     * Hypotension     * Dizziness

  • Serious Effects:     * Acute kidney injury/kidney failure: This is noted to occur particularly with the use of NSAIDs (Non-Steroidal Anti-Inflammatory Drugs) or through the improper use of diuretics.

Integumentary System (Skin/Hair)

  • Drug Classification Stems and Examples:     * -conazole: These are Azole antifungals. An example drug is Fluconazole.     * -cort-: These are Corticosteroids. An example drug is Hydrocortisone.     * -retin-: These are Retinoids. An example drug is Isotretinoin.

  • Common Side Effects:     * Rash     * Itching     * Photosensitivity: Described as a sun rash.     * Dryness: This effect is noted as being especially prevalent with retinoids.

  • Serious Effects:     * Stevens-Johnson syndrome: Characterized by skin peeling.     * Skin atrophy: Linked to the long-term use of steroids.

Lymphatic and Immune System

  • Drug Classification Stems and Examples:     * -grastim: These are Granulocyte colony-stimulating factors. An example drug is Filgrastim.     * -trexate: These are Antimetabolites. An example drug is Methotrexate.     * -vir-: These denote Antivirals. An example drug is Acyclovir.

  • Common Side Effects:     * Bone marrow suppression: Specifically involves a decreased white blood cell count.     * Anemia     * Weakened immune response

Nervous System (Central Nervous System - CNS)

  • Drug Classification Stems and Examples:
      - -azepam or -zolam: These stems denote Benzodiazepines, a class of medications primarily used for their sedative, anxiolytic, and muscle relaxant properties. Examples of drugs in this class include Diazepam, which is commonly used to treat anxiety, muscle spasms, and seizures, and Lorazepam, often prescribed for anxiety and to induce sedation prior to medical procedures.
      - -triptan: These stems are employed in the treatment of Migraine headaches. An important example is Sumatriptan, which works by stimulating serotonin receptors in the brain, thereby narrowing blood vessels and alleviating migraine symptoms.
      - -peridol: This stem denotes Antipsychotics, which are used to manage psychosis, primarily in conditions like schizophrenia and bipolar disorder. A key drug is Haloperidol, known for its effectiveness but also its propensity to cause extrapyramidal symptoms.
      - -barb-: These stems refer to Barbiturates, a group of drugs that depress the central nervous system. An example is Phenobarbital, primarily used as an anticonvulsant for seizure control but may also lead to sedation and dependence when misused.

  • Common Side Effects:
      - Drowsiness: A prevalent side effect that can impair daily functioning.
      - Sedation: May significantly enhance the sedative effects of other CNS depressants.
      - Dizziness: Often reported, potentially leading to falls in susceptible populations.
      - Headache: May occur as a withdrawal symptom or due to interactions with other medications.
      - Respiratory depression: Can be life-threatening, particularly in overdose situations.
      - Confusion: More common in older adults, impacting cognitive function and safety.
      - Tremor: A less common side effect that might indicate withdrawal or medication intolerance.
      - Dependence: Chronic use brings the risk of psychological and physical dependence, necessitating careful management.

  • Serious Effects:
      - Serotonin syndrome: A potentially life-threatening condition caused by excessive serotonergic activity in the nervous system, characterized by symptoms such as agitation, tachycardia, sweating, confusion, and muscle rigidity. Immediate medical attention is required.

Musculoskeletal System

  • Drug Classification Stems and Examples:
      - -statin: These are HMG-CoA reductase inhibitors, utilized primarily to lower cholesterol levels in the blood, thereby reducing the risk of cardiovascular events. A common example is Atorvastatin, known for its efficacy in lowering low-density lipoprotein (LDL) cholesterol.
      - -dronate: These are Bisphosphonates, mainly prescribed for the treatment of osteoporosis by inhibiting bone resorption and increasing bone density. A standard medication is Alendronate.
      - -profen: These stems represent Anti-inflammatory agents, commonly used for pain relief and to reduce inflammation. A widely recognized example is Ibuprofen, effective for various conditions from headaches to arthritis.
      - -caine: These denote Local anesthetics, which block nerve conduction in specific areas, providing pain relief during surgical procedures or dental work. An example is Lidocaine, used extensively in both office and inpatient settings.

  • Common Side Effects:
      - Myalgia: Muscle pain that may occur during therapy, indicating drug intolerance or allergic reactions.
      - Muscle weakness: Can be particularly concerning as it may significantly impact mobility and quality of life.
      - Joint pain: Often a reason patients discontinue therapy, requiring frequent monitoring and potential modification of treatment.

  • Serious Effects:
      - Rhabdomyolysis: A serious syndrome characterized by muscle breakdown, which can lead to kidney failure. Symptoms may include severe muscle pain and dark urine.
      - Tendon rupture: A rare, but serious side effect particularly associated with the use of fluoroquinolones; patients must be educated on the signs to watch for.
      - Decreased bone density: Long-term use of steroids can compromise bone integrity, elevating the risk of fractures and osteoporosis.

Renal System

  • Drug Classification Stems and Examples:
      - -ide: These denote Loop diuretics, utilized for managing edema and hypertension by promoting urine production. An example drug is Furosemide, frequently used in conditions such as heart failure.
      - -pril: These denote ACE Inhibitors, which help relax blood vessels and lower blood pressure. Lisinopril is a common medication in this class, used not only for hypertension but also for heart failure management.
      - -sartan: Denotes Angiotensin II Receptor Blockers (ARBs), exemplified by Losartan, which provides similar benefits as ACE inhibitors but with a different side effect profile, particularly a lower incidence of cough.
      - -vaptan: These are Vasopressin receptor antagonists, with Tolvaptan being a notable example; it is used to treat conditions associated with inappropriate antidiuretic hormone secretion.

  • Common Side Effects:
      - Dehydration: Often related to the use of diuretics; patients must be monitored for fluid status.
      - Electrolyte imbalances: Particularly hypokalemia (low potassium) and hyperkalemia (high potassium), necessitating routine laboratory monitoring for safety.
      - Hypotension: A common consequence of anti-hypertensive therapies, which may lead to dizziness or fainting if not managed.

  • Serious Effects:
      - Acute kidney injury/kidney failure: This serious complication may arise from the use of NSAIDs (Non-Steroidal Anti-Inflammatory Drugs) or through the improper use of diuretics; early detection is crucial to prevent irreversible damage.

Integumentary System (Skin/Hair)

  • Drug Classification Stems and Examples:
      - -conazole: These are Azole antifungals, used for various fungal infections. An example is Fluconazole, which is particularly effective against yeast infections and systemic fungal infections.
      - -cort-: These denote Corticosteroids, which reduce inflammation and modulate immune responses. An example is Hydrocortisone, applied topically for allergic reactions and inflammation.
      - -retin-: Referring to Retinoids, commonly used for acne treatment and photoaging. Isotretinoin is a potent retinoid that can significantly help severe acne cases.

  • Common Side Effects:
      - Rash: May occur as an allergic reaction or due to sensitivity to a component of the medication.
      - Itching: Common with several topical agents; may signal an intolerable reaction requiring discontinuation.
      - Photosensitivity: Increased sensitivity to sunlight, leading to sunburns or rashes, particularly with retinoids.
      - Dryness: Frequently reported side effect with retinoids, necessitating the use of moisturizers.

  • Serious Effects:
      - Stevens-Johnson syndrome: A severe skin condition characterized by skin peeling and mucosal lesions, requiring immediate medical attention.
      - Skin atrophy: Linked to long-term use of steroids; education on proper usage and possible side effects is critical to prevent complications.

Lymphatic and Immune System

  • Drug Classification Stems and Examples:
      - -grastim: These are Granulocyte colony-stimulating factors, which stimulate the production of white blood cells to combat neutropenia. An example is Filgrastim, often administered to cancer patients undergoing chemotherapy.
      - -trexate: These are Antimetabolites, with Methotrexate being a key example, used for conditions like rheumatoid arthritis and certain cancers.
      - -vir-: These denote Antivirals, which inhibit viral replication. An example is Acyclovir, frequently used in treating infections caused by certain viruses, including herpes simplex.

  • Common Side Effects:
      - Bone marrow suppression: This can lead to adverse outcomes such as increased infection risk or anemia due to a decrease in blood cell production.
      - Anemia: Low red blood cell count that may result from treatment with certain drugs, necessitating careful monitoring.   - Weakened immune response: A result of various treatments, particularly those that suppress immune function.