Learn Pharmacology
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Diphenhydramine
Diphenhydramine
Use:
Allergic reactions, insomnia, motion sickness, EPS treatment
Mechanism:
Competitive H1 receptor antagonist; anticholinergic and sedative properties
Diltiazem
Diltiazem Hydrochloride
Use:
Hypertension, angina, atrial fibrillation/flutter rate control
Mechanism:
Non-dihydropyridine CCB; blocks L-type calcium channels in heart and vessels
Donepezil
Donepezil
Use:
Mild to severe Alzheimer's disease
Mechanism:
Reversibly inhibits acetylcholinesterase, increasing acetylcholine in CNS
Doxycycline
Doxycycline Hyclate
Use:
Respiratory infections, Lyme disease, acne, STIs, malaria prophylaxis
Mechanism:
Inhibits bacterial protein synthesis by binding to 30S ribosomal subunit
Duloxetine
Duloxetine Hydrochloride
Use:
Depression, anxiety, neuropathic pain, fibromyalgia, chronic musculoskeletal pain
Mechanism:
Inhibits serotonin and norepinephrine reuptake
Dabigatran
Dabigatran Etexilate
Use:
Atrial fibrillation stroke prevention, DVT/PE treatment/prevention
Mechanism:
Direct thrombin (factor IIa) inhibitor
Dantrolene
Dantrolene Sodium
Use:
Malignant hyperthermia, neuroleptic malignant syndrome
Mechanism:
Inhibits calcium release from sarcoplasmic reticulum, reducing muscle contraction
Dapagliflozin
Dapagliflozin
Use:
Type 2 diabetes, heart failure, chronic kidney disease
Mechanism:
Inhibits SGLT2, increasing urinary glucose excretion
Daptomycin
Daptomycin
Use:
Complicated skin infections, bacteremia, endocarditis (MRSA/MSSA)
Mechanism:
Binds to bacterial membrane, causes rapid depolarization and cell death
Denosumab
Denosumab
Use:
Osteoporosis, bone loss from cancer, giant cell tumor
Mechanism:
Binds RANKL, preventing osteoclast formation, function, and survival
Desmopressin
Desmopressin
Use:
Diabetes insipidus, nocturnal enuresis, hemophilia A, von Willebrand disease
Mechanism:
Synthetic vasopressin analog that increases water reabsorption in kidneys
Dexamethasone
Dexamethasone
Use:
Severe inflammation, cerebral edema, chemotherapy-induced nausea, COVID-19
Mechanism:
Potent glucocorticoid with minimal mineralocorticoid activity
Dexmedetomidine
Dexmedetomidine
Use:
ICU sedation, procedural sedation
Mechanism:
Selective alpha-2 adrenergic agonist in CNS, reduces sympathetic outflow
Dexrazoxane
Dexrazoxane
Use:
Anthracycline-induced cardiomyopathy prevention, anthracycline extravasation
Mechanism:
Iron chelator that prevents anthracycline-induced free radical formation
Diazepam
Diazepam
Use:
Anxiety, muscle spasm, seizures, alcohol withdrawal
Mechanism:
Enhances GABA-A receptor activity
Digoxin
Digoxin
Use:
Heart failure, atrial fibrillation
Mechanism:
Inhibits Na+/K+ ATPase, increasing intracellular calcium in cardiac myocytes
Dobutamine
Dobutamine
Use:
Cardiogenic shock, heart failure exacerbation, stress echocardiography
Mechanism:
Selective beta-1 agonist increasing cardiac contractility and output
Docetaxel
Docetaxel
Use:
Breast, lung, prostate, gastric, head/neck cancers
Mechanism:
Stabilizes microtubules, preventing depolymerization and cell division
Doripenem
Doripenem
Use:
Complicated intra-abdominal infections, complicated UTI, pneumonia
Mechanism:
Inhibits bacterial cell wall synthesis by binding to PBPs
Doxorubicin
Doxorubicin
Use:
Breast, lung, ovarian, lymphomas, sarcomas, leukemias
Mechanism:
Intercalates DNA, inhibits topoisomerase II, generates free radicals
Dupilumab
Dupilumab
Use:
Atopic dermatitis, asthma, chronic rhinosinusitis with nasal polyps
Mechanism:
Blocks IL-4 and IL-13 signaling by binding IL-4 receptor alpha
Dutasteride
Dutasteride
Use:
Benign prostatic hyperplasia
Mechanism:
Inhibits BOTH 5-alpha reductase type I and II, blocking conversion of testosterone to DHT
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