Hyosyne
I’m sorry, but I don’t have any reliable information about a drug called Hyosyne. It does not appear in reputable pharmacology references or regulatory databases, so I can’t provide a…
Hyoscyamine
Hyoscyamine Hyoscyamine is a quaternary ammonium antimuscarinic alkaloid used primarily for smooth‑muscle relaxation in the gastrointestinal, genitourinary, and respiratory tracts. --- Mechanism of Action M₁–M₃ receptor blockade – competitively inhibits…
Hydroxyzine Pamoate
Hydroxyzine Pamoate Hydroxyzine pamoate is a long‑acting, first‑generation H₁‑histamine receptor antagonist commonly prescribed for allergic conditions, anxiety, and pruritus. It provides both antihistaminic and sedative effects due to its central…
Hydroxyzine
Hydroxyzine Hydroxyzine is a first‑generation H1‑histamine receptor antagonist widely employed for its antiallergic, anti‑emetic, anxiolytic, and sedative properties. It is available as a 25 mg oral tablet, 12.5 mg/5 mL oral solution, and…
Hydroxyurea
Hydroxyurea Hydroxyurea (HU) is a ribonucleotide reductase inhibitor used primarily for sickle cell disease (SCD) and certain myeloproliferative disorders. Its broad mechanisms of action, favorable oral bioavailability, and established safety…
Hydroxychloroquine
Hydroxychloroquine Mechanism of Action Inhibition of lysosomal acidification: Raises the pH in endosomes/lysosomes, impairing antigen processing and presentation. Immunomodulation: Suppresses toll‑interceptor signaling, decreases cytokine release (IL‑6, TNF‑α), and reduces NF‑κB…
Hydroquinone topical
Hydroquinone Topical Hydroquinone (4‑hydroxy‑1,1‑dimethyl‑2‑cyclo‑hexa‑1,4‑dien‑3‑one) is the most widely used depigmenting agent in dermatology. Mechanism of Action Tyrosinase inhibition – Hydroquinone competitively inhibits the rate‑limiting step of melanin synthesis by blocking…
Hydroquinone
Hydroquinone Hydroquinone (4‑methoxy‑1,2‑benzenediol) is a topical depigmenting agent widely used for the treatment of hyperpigmentary disorders such as melasma, solar lentigines, post‑inflammatory hyperpigmentation, and café‑au‑lait spots. Mechanism of Action Hydroquinone…
Hydromorphone
Hydromorphone Hydromorphone is a semi‑synthetic, short‑acting μ‑opioid receptor agonist commonly used for moderate to severe acute pain. It is available as oral tablets, oral solutions, IV/SC preparations, and an extended‑release…
Hydrocortisone Topical
Hydrocortisone Topical Hydrocortisone is the reference low‑potency topical corticosteroid commonly used to treat a variety of inflammatory dermatologic conditions. Mechanism of Action Receptor binding: Activates the cytosolic glucocorticoid receptor (GR)…