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 Levofloxacin: Uses, Dosage, Side Effects, and More What is Levofloxacin? Levofloxacin is a broad-spectrum fluoroquinolone antibiotic that inhibits bacterial DNA gyrase and topoisomerase IV, disrupting DNA replication and transcription. This medication is administered orally or intravenously, used under medical supervision to treat a variety of bacterial infections. Overview of Levofloxacin Generic Name: Levofloxacin Brand Name: Levaquin, generics Drug Group: Fluoroquinolone antibiotic (antibacterial) Commonly Used For Treat community-acquired pneumonia (CAP). Manage urinary tract infections (UTIs). Address sinusitis and bronchitis. Key Characteristics Form: Oral tablets (250 mg, 500 mg, 750 mg), oral solution (25 mg/mL), or IV infusion (5…
Comprehensive Guide to Levothyroxine: Uses, Dosage, Side Effects, and More What is Levothyroxine? Levothyroxine is a synthetic form of the thyroid hormone thyroxine (T4) that replaces or supplements thyroid hormone levels in the body, regulating metabolism and energy production. This medication is administered orally, used under medical supervision to treat hypothyroidism and related conditions. Overview of Levothyroxine Generic Name: Levothyroxine Brand Name: Synthroid, Levoxyl, generics Drug Group: Thyroid hormone (hormone replacement) Commonly Used For Treat hypothyroidism. Manage thyroid-stimulating hormone (TSH) suppression in thyroid cancer. Prevent goiter. Key Characteristics Form: Oral tablets (25 mcg, 50 mcg, 75 mcg, 88 mcg, 100…
Comprehensive Guide to Leuprolide: Uses, Dosage, Side Effects, and More What is Leuprolide? Leuprolide is a synthetic gonadotropin-releasing hormone (GnRH) agonist that initially stimulates but ultimately suppresses pituitary gonadotropin release, reducing sex hormone levels (e.g., testosterone, estrogen). This medication is administered via injection, used under medical supervision to treat hormone-sensitive conditions like prostate cancer and endometriosis. Overview of Leuprolide Generic Name: Leuprolide Brand Name: Lupron, Eligard, generics Drug Group: GnRH agonist (hormone modulator) Commonly Used For Treat advanced prostate cancer. Manage endometriosis. Control precocious puberty. Key Characteristics Form: Injectable depot (3.75 mg, 7.5 mg, 11.25 mg, 22.5 mg, 30 mg)…
Comprehensive Guide to Latanoprost: Uses, Dosage, Side Effects, and More What is Latanoprost? Latanoprost is a prostaglandin F2-alpha analog used to reduce intraocular pressure (IOP) in glaucoma and ocular hypertension by increasing uveoscleral outflow. This medication is administered as ophthalmic drops, used under medical supervision to manage eye pressure-related conditions. Overview of Latanoprost Generic Name: Latanoprost Brand Name: Xalatan, generics Drug Group: Prostaglandin analog (antiglaucoma) Commonly Used For Treat open-angle glaucoma. Manage ocular hypertension. Reduce IOP in combination therapies. Key Characteristics Form: Ophthalmic solution (0.005%, single-use or multi-dose) (detailed in Dosage section). Mechanism: Enhances uveoscleral outflow, lowering IOP without affecting…
Comprehensive Guide to Lapatinib: Uses, Dosage, Side Effects, and More What is Lapatinib? Lapatinib is a tyrosine kinase inhibitor that targets the HER2 (ErbB2) and EGFR (ErbB1) receptors, used to slow the growth of certain types of breast cancer. This medication is administered orally, used under medical supervision as part of cancer therapy regimens. Overview of Lapatinib Generic Name: Lapatinib Brand Name: Tykerb, generics Drug Group: Tyrosine kinase inhibitor (anticancer) Commonly Used For Treat HER2-positive breast cancer. Manage advanced or metastatic breast cancer. Combine with other therapies for resistant cases. Key Characteristics Form: Oral tablets (250 mg) (detailed in Dosage…
Comprehensive Guide to Lansoprazole: Uses, Dosage, Side Effects, and More What is Lansoprazole? Lansoprazole is a proton pump inhibitor (PPI) that reduces gastric acid production by irreversibly inhibiting the H+/K+-ATPase enzyme in parietal cells. This medication is administered orally as capsules, orally disintegrating tablets, or via nasogastric tube, used under medical supervision to treat acid-related disorders. Overview of Lansoprazole Generic Name: Lansoprazole Brand Name: Prevacid, generics Drug Group: Proton pump inhibitor (anti-ulcer, gastroprotective) Commonly Used For Treat gastroesophageal reflux disease (GERD). Heal duodenal ulcers. Eradicate Helicobacter pylori infection. Key Characteristics Form: Delayed-release capsules (15 mg, 30 mg), orally disintegrating tablets…
Comprehensive Guide to Lanreotide: Uses, Dosage, Side Effects, and More What is Lanreotide? Lanreotide is a synthetic somatostatin analog that inhibits the release of growth hormone, insulin, and other hormones, used to manage neuroendocrine tumors and acromegaly. This medication is administered via deep subcutaneous injection, used under medical supervision for chronic endocrine disorders. Overview of Lanreotide Generic Name: Lanreotide Brand Name: Somatuline Depot, generics Drug Group: Somatostatin analog (endocrine modulator) Commonly Used For Treat acromegaly. Manage neuroendocrine tumors (NETs). Control carcinoid syndrome symptoms. Key Characteristics Form: Pre-filled syringes for deep subcutaneous injection (60 mg, 90 mg, 120 mg) (detailed in…
Comprehensive Guide to Lamotrigine: Uses, Dosage, Side Effects, and More What is Lamotrigine? Lamotrigine is an anticonvulsant medication that stabilizes neuronal membranes by inhibiting voltage-gated sodium channels, reducing excessive electrical activity in the brain. This medication is administered orally, used under medical supervision to treat epilepsy and bipolar disorder. Overview of Lamotrigine Generic Name: Lamotrigine Brand Name: Lamictal, generics Drug Group: Anticonvulsant (antiepileptic, mood stabilizer) Commonly Used For Control seizures in epilepsy. Manage bipolar disorder mood episodes. Prevent mood swings in bipolar maintenance. Key Characteristics Form: Oral tablets (25 mg, 50 mg, 100 mg, 200 mg), chewable tablets, orally disintegrating…
Comprehensive Guide to Lamivudine: Uses, Dosage, Side Effects, and More What is Lamivudine? Lamivudine is a nucleoside reverse transcriptase inhibitor (NRTI) used to treat human immunodeficiency virus (HIV) infection and chronic hepatitis B virus (HBV) by inhibiting viral reverse transcription and replication. This medication is administered orally, used under medical supervision to manage viral infections. Overview of Lamivudine Generic Name: Lamivudine Brand Name: Epivir, Epivir-HBV, generics Drug Group: Nucleoside reverse transcriptase inhibitor (antiretroviral, antiviral) Commonly Used For Treat HIV-1 infection in combination therapy. Manage chronic hepatitis B. Prevent mother-to-child HIV transmission. Key Characteristics Form: Oral tablets (150 mg, 300 mg),…
Comprehensive Guide to Labetalol: Uses, Dosage, Side Effects, and More What is Labetalol? Labetalol is a combined alpha-1 and non-selective beta-adrenergic blocker that reduces blood pressure by decreasing peripheral vascular resistance and cardiac output. This medication is administered orally or intravenously, used under medical supervision to manage hypertension and related conditions. Overview of Labetalol Generic Name: Labetalol Brand Name: Trandate, Normodyne, generics Drug Group: Alpha- and beta-adrenergic blocker (antihypertensive) Commonly Used For Treat hypertension (high blood pressure). Manage hypertensive emergencies. Control preeclampsia in pregnancy. Key Characteristics Form: Oral tablets (100 mg, 200 mg, 300 mg), IV injection (5 mg/mL) (detailed…