Author: Andrew Parker, MD
Andrew Parker, MD
Dr. Andrew Parker is a board-certified internal medicine physician with over 10 years of clinical experience. He earned his medical degree from the University of California, San Francisco (UCSF), and has worked at leading hospitals including St. Mary’s Medical Center. Dr. Parker specializes in patient education and digital health communication. He now focuses on creating clear, accessible, and evidence-based medical content for the public.
Comprehensive Guide to Hydroxychloroquine: Uses, Dosage, Side Effects, and More What is Hydroxychloroquine? Hydroxychloroquine is an antimalarial drug with immunomodulatory properties, used to treat autoimmune diseases and malaria by interfering with parasite growth and immune responses. This medication is administered orally, used under medical supervision for various inflammatory and infectious conditions. Overview of Hydroxychloroquine Generic Name: Hydroxychloroquine Brand Name: Plaquenil, generics Drug Group: Antimalarial, immunomodulatory (disease-modifying antirheumatic drug, DMARD) Commonly Used For Treat rheumatoid arthritis (RA). Manage systemic lupus erythematosus (SLE). Prevent and treat malaria. Key Characteristics Form: Oral tablets (200 mg, 400 mg) (detailed in Dosage section). Mechanism: Inhibits…
Comprehensive Guide to Hydrocortisone: Uses, Dosage, Side Effects, and More What is Hydrocortisone? Hydrocortisone is a glucocorticoid corticosteroid that mimics cortisol, reducing inflammation, suppressing the immune response, and managing adrenal insufficiency. This medication is administered orally, topically, or via injection, used under medical supervision for various inflammatory and hormonal conditions. Overview of Hydrocortisone Generic Name: Hydrocortisone Brand Name: Cortef, Hydrocortisone Cream, Solu-Cortef, generics Drug Group: Glucocorticoid corticosteroid (anti-inflammatory, immunosuppressive) Commonly Used For Treat adrenal insufficiency. Manage allergic reactions. Relieve skin inflammation. Key Characteristics Form: Oral tablets (5 mg, 10 mg, 20 mg), topical cream/ointment (0.5%, 1%, 2.5%), injectable suspension (100…
Comprehensive Guide to Hydrocodone: Uses, Dosage, Side Effects, and More What is Hydrocodone? Hydrocodone is a semi-synthetic opioid analgesic that acts on the central nervous system to relieve moderate to severe pain by binding to mu-opioid receptors. This medication is administered orally, often in combination with acetaminophen or ibuprofen, and is used under strict medical supervision due to its potential for dependence. Overview of Hydrocodone Generic Name: Hydrocodone Brand Name: Vicodin, Norco, Zohydro ER, generics Drug Group: Opioid analgesic (narcotic) Commonly Used For Manage acute pain. Treat chronic pain. Suppress severe cough. Key Characteristics Form: Immediate-release tablets (5 mg, 7.5…
Comprehensive Guide to Hydrochlorothiazide: Uses, Dosage, Side Effects, and More What is Hydrochlorothiazide? Hydrochlorothiazide is a thiazide diuretic that promotes the excretion of sodium, chloride, and water by inhibiting sodium reabsorption in the distal convoluted tubule of the kidney. This medication is administered orally, used under medical supervision to manage hypertension and edema associated with various conditions. Overview of Hydrochlorothiazide Generic Name: Hydrochlorothiazide Brand Name: Microzide, Esidrix, generics Drug Group: Thiazide diuretic (antihypertensive, diuretic) Commonly Used For Treat hypertension (high blood pressure). Manage edema from heart failure. Reduce swelling in kidney disorders. Key Characteristics Form: Oral tablets (12.5 mg, 25…
Comprehensive Guide to Hydralazine: Uses, Dosage, Side Effects, and More What is Hydralazine? Hydralazine is a direct-acting arterial vasodilator that relaxes smooth muscle in blood vessels, reducing blood pressure. This medication is administered orally or intravenously, used under medical supervision to manage hypertension and heart failure. Overview of Hydralazine Generic Name: Hydralazine Brand Name: Apresoline, generics Drug Group: Vasodilator (antihypertensive) Commonly Used For Treat hypertension (high blood pressure). Manage heart failure in combination with other drugs. Control hypertensive emergencies. Key Characteristics Form: Oral tablets (10 mg, 25 mg, 50 mg, 100 mg), injectable (20 mg/mL) (detailed in Dosage section). Mechanism:…
Comprehensive Guide to Human Insulin: Uses, Dosage, Side Effects, and More What is Human Insulin? Human Insulin is a recombinant form of the naturally occurring hormone insulin, used to regulate blood glucose levels by facilitating glucose uptake into cells and inhibiting hepatic glucose production. This medication is administered via subcutaneous injection, intravenous infusion, or insulin pumps, used under medical supervision to manage diabetes mellitus. Overview of Human Insulin Generic Name: Human Insulin Brand Name: Humulin, Novolin, generics Drug Group: Antidiabetic (insulin hormone) Commonly Used For Control blood sugar in type 1 diabetes. Manage type 2 diabetes in combination with oral…
Comprehensive Guide to Hydroxyurea: Uses, Dosage, Side Effects, and More What is Hydroxyurea? Hydroxyurea is an antimetabolite that inhibits DNA synthesis by blocking ribonucleotide reductase, used to reduce sickle cell crisis frequency and treat certain cancers. This medication is administered orally, used under medical supervision to manage hematologic and oncologic conditions. Overview of Hydroxyurea Generic Name: Hydroxyurea Brand Name: Hydrea, Droxia, Siklos, generics Drug Group: Antimetabolite (cytotoxic, sickle cell disease modifier) Commonly Used For Reduce sickle cell disease complications. Treat chronic myelogenous leukemia (CML). Manage polycythemia vera (PV). Key Characteristics Form: Oral capsules (500 mg), tablets (100 mg, 1000 mg)…
Comprehensive Guide to Histrelin: Uses, Dosage, Side Effects, and More What is Histrelin? Histrelin is a synthetic gonadotropin-releasing hormone (GnRH) agonist that suppresses gonadotropin production by downregulating pituitary receptors, used to treat hormone-sensitive conditions like prostate cancer and central precocious puberty. This medication is administered via subcutaneous implant, used under medical supervision. Overview of Histrelin Generic Name: Histrelin Brand Name: Vantas, Supprelin LA Drug Group: GnRH agonist (hormone modulator) Commonly Used For Treat advanced prostate cancer. Manage central precocious puberty (CPP). Suppress hormone production in endometriosis. Key Characteristics Form: Subcutaneous implant (50 mg for 12 months) (detailed in Dosage section).…
Comprehensive Guide to Hyoscyamine: Uses, Dosage, Side Effects, and More What is Hyoscyamine? Hyoscyamine is an anticholinergic medication that inhibits the action of acetylcholine on muscarinic receptors, reducing smooth muscle spasms and secretions in the gastrointestinal, urinary, and respiratory systems. This medication is administered orally, sublingually, or via injection, used under medical supervision to manage various spastic and hypersecretory conditions. Overview of Hyoscyamine Generic Name: Hyoscyamine Brand Name: Levsin, Anaspaz, generics Drug Group: Anticholinergic (antispasmodic) Commonly Used For Treat irritable bowel syndrome (IBS). Manage bladder spasms. Reduce excessive salivation. Key Characteristics Form: Oral tablets (0.125 mg, 0.375 mg), sublingual tablets…
Comprehensive Guide to Hexachlorophene: Uses, Dosage, Side Effects, and More What is Hexachlorophene? Hexachlorophene is a bisphenol antiseptic with bacteriostatic and bactericidal properties, effective against Gram-positive bacteria by disrupting cell wall synthesis. This medication is administered topically, used under medical supervision to prevent skin infections and as a surgical scrub. Overview of Hexachlorophene Generic Name: Hexachlorophene Brand Name: pHisoHex, generics Drug Group: Antiseptic (topical antimicrobial) Commonly Used For Prevent skin infections in neonates. Serve as a preoperative surgical scrub. Manage localized bacterial skin conditions. Key Characteristics Form: Topical liquid (3% aqueous solution), cream, or soap (detailed in Dosage section). Mechanism:…