Hydroxytyrosol cardiovascular support explained, evidence-based benefits, dosing, and side effects
Hydroxytyrosol is a small, potent phenolic found in olives and extra-virgin olive oil. It is one reason the Mediterranean dietary pattern shows cardiovascular advantages. In controlled studies, hydroxytyrosol helps protect blood lipids from oxidative stress, improves markers of vascular function, and modestly supports cardiometabolic health when paired with diet and lifestyle. It is also well absorbed and rapidly conjugated...
Hygrophila spinosa kidney stone support, diuretic properties, dosage, and risks
Hygrophila spinosa—also cataloged as Hygrophila auriculata or Hygrophila schulli and known in Ayurveda as Kokilaksha or Talmakhana—is a marsh-loving herb used in South Asia for urinary health, fluid balance, and men’s reproductive wellness. Traditional texts describe its seeds and aerial parts as cooling, diuretic, and restorative. Modern laboratory work has examined antioxidant, anti-inflammatory, and kidney-protective actions, including models of...
Hypaque Meglumine: Indications, Preparation and Dilution, Adult and Pediatric Dosage, and Adverse Effects
Hypaque Meglumine is a long-standing iodinated contrast agent used to make blood vessels, organs, and hollow structures visible on X-ray and CT imaging. Its active component, diatrizoate meglumine, is a high-osmolality, water-soluble, ionic medium that delivers dense iodine to boost contrast. Clinicians still employ Hypaque formulations (including Hypaque-76 and Hypaque-Cysto) in selected vascular, CT, and retrograde urinary studies when...
Hypaque-Cysto: Indications for Cystography, Preparation and Dilution, Dosage by Volume, and Safety
Hypaque-Cysto is a radiopaque contrast agent formulated specifically for retrograde cystourethrography—the fluoroscopic study that outlines the urinary bladder, bladder neck, urethra, and (when reflux is present) the distal ureters. The agent is diatrizoate meglumine, an ionic, water-soluble, tri-iodinated benzoate salt supplied as a sterile solution that can be used as-is or diluted to lower concentrations. Because it stays within...
Hyperforin: Evidence-Based Mood Support, Recommended Intake, Side Effects, and Interactions
Hyperforin is the best-studied active compound in St. John’s wort (Hypericum perforatum) and a leading reason this herb can help some adults with mild to moderate depression. Unlike many plant constituents that work indirectly, hyperforin acts on several neural and metabolic targets at once: it modulates the uptake of key neurotransmitters, activates TRPC6 ion channels that affect synaptic plasticity,...
HyperHEP B: Newborn Prophylaxis, Adult Exposure Management, Dosage Details, and Risks
HyperHEP B is a prescription hepatitis B immune globulin (human) used to prevent hepatitis B after exposure and to protect newborns at high risk. It delivers ready-made antibodies (anti-HBs) for immediate, short-term protection while the hepatitis B vaccine builds long-term immunity. Clinicians reach for it in time-sensitive moments: within hours of a needlestick, after sexual exposure to a person...
Hypericin: Photodynamic Therapy Uses, Supplement Dosage Guidance, Benefits, and Risks
Hypericin is a red–orange plant pigment best known as one of the signature constituents of St. John’s wort (Hypericum perforatum). It absorbs visible light and, when activated, produces short-lived reactive oxygen species—a property that researchers harness in photodynamic therapy (PDT) for certain skin conditions and that also explains the herb’s well-known photosensitivity warnings. In dietary supplements, hypericin serves as...
Hypericum perforatum: Depression Support, Mechanisms, Dosage Guidance, and Side Effects
Hypericum perforatum—better known as St. John’s wort—is one of the most researched herbal products for mood support. Standardized extracts of the plant’s flowering tops have shown antidepressant effects in adults with mild to moderate depression, and the herb’s complex chemistry (notably hyperforin and hypericin) also explains its broad interaction profile with prescription drugs. People choose Hypericum because it is...
Hyperoside: Health Benefits, How It Works, Best Uses, Dosage, and Safety
Hyperoside is a plant-derived flavonol glycoside—specifically quercetin-3-O-galactoside—found in hawthorn leaves and flowers, St. John’s wort, and several other traditional herbs. Interest in hyperoside has grown because it combines antioxidant, anti-inflammatory, and vasoprotective actions with a favorable safety profile when used appropriately. Beyond general “antioxidant” language, modern research maps how hyperoside helps cells restore redox balance, calms overactive inflammatory signals,...
Hyphed: Cough Relief, How It Works, Adult Dosage, and Safety Guidelines
Hyphed is a prescription-only oral solution that combines three active medicines—hydrocodone (an opioid cough suppressant), chlorpheniramine (an H1 antihistamine), and pseudoephedrine (a nasal decongestant). Together, they aim to reduce dry, disruptive cough while easing congestion and allergy-like symptoms in adults. Because it contains an opioid, Hyphed is reserved for short-term use when benefits are expected to outweigh risks, and...
Hypoxis rooperi benefits for prostate health, dosage recommendations, and safety considerations
Hypoxis rooperi—more widely known today by its accepted botanical name, Hypoxis hemerocallidea and commonly called African potato—is a Southern African medicinal plant with a long record of traditional use. Modern interest centers on two things: (1) hypoxoside, a plant compound that is converted in the gut to rooperol, and (2) plant sterols like beta-sitosterol that have been studied for...
Hypromellose: Dry Eye Relief Benefits, Proper Use, Recommended Dosage, and Safety
Hypromellose—also called hydroxypropyl methylcellulose (HPMC)—is a water-soluble polymer best known as a gentle, effective lubricant for dry, irritated eyes. In ophthalmic products, hypromellose behaves like a tear-film “cushion,” slowing evaporation and smoothing the ocular surface so lids glide comfortably over the cornea. It’s widely available over the counter in several concentrations (commonly 0.3%–0.5%, and in some products up to...
HyQvia: Uses, Benefits, Dosing Schedules, and Safety Explained
HyQvia is a dual-vial, subcutaneous immunoglobulin (SCIG) therapy designed to deliver protective IgG with fewer infusion days. It pairs a 10% human immune globulin with recombinant human hyaluronidase (rHuPH20), which temporarily opens channels in the subcutaneous tissue so larger volumes can be infused at one or a few sites. For people living with primary immunodeficiency (PI), HyQvia offers IVIG-like...
Hyrimoz: Crohn’s, Colitis, Arthritis, and Psoriasis Treatment Benefits and Risks
Hyrimoz is a biosimilar to adalimumab, a tumor necrosis factor (TNF) blocker used for autoimmune diseases such as rheumatoid arthritis, Crohn’s disease, ulcerative colitis, plaque psoriasis, ankylosing spondylitis, psoriatic arthritis, hidradenitis suppurativa, and adult non-infectious uveitis. As a biosimilar, it’s designed to match Humira in safety, effectiveness, and quality, with no clinically meaningful differences. Hyrimoz comes in citrate-free, high-concentration...
Hysingla ER: Once Daily Hydrocodone Extended Release Benefits, How It Works, Dosing, and Safety
Hysingla ER is a once-daily, extended-release formulation of hydrocodone designed to manage severe, persistent pain that truly requires around-the-clock opioid therapy when other options are not adequate. It delivers hydrocodone slowly over 24 hours and includes abuse-deterrent properties that make it harder to manipulate for rapid release. Because Hysingla ER is potent and long-acting, safe use hinges on careful...
Hytone: What It Treats, How It Works, Application Frequency, and Risks Explained
Hytone is a prescription brand of hydrocortisone 2.5%, a low-potency topical corticosteroid used to calm inflamed, itchy skin. By reducing inflammatory signals and gently constricting surface blood vessels, it eases redness, swelling, and itch in common conditions like atopic dermatitis (eczema), contact dermatitis, insect reactions, and facial or intertriginous flares where stronger steroids may be risky. Because it is...
