Noctor (Diphenhydramine Hydrochloride)

Diphenhydramine works by competitively blocking histamine H1 receptors in the body, preventing histamine from binding and triggering the cascade that leads to itching, swelling, redness and the wake‑promoting effects of histamine in the brain.

The appropriate dose of Noctor is determined by the prescribing clinician based on the patient’s age, weight, condition being treated and any other relevant medical factors. Patients should follow the prescriber’s instructions and the product label.

Safety data for diphenhydramine in pregnancy and lactation are limited. It should be used only if the potential benefit justifies any possible risk to the fetus or infant, and always under the guidance of a qualified healthcare professional.

To order Noctor, submit an enquiry on the product page at gnhindia.com with the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any necessary import documentation.

Noctor (diphenhydramine) is a first‑generation antihistamine that causes sedation and anticholinergic effects, whereas second‑generation agents such as cetirizine or loratadine are less sedating and have a lower risk of anticholinergic side effects. Choice depends on the clinical situation and patient tolerance.

Store Noctor at temperatures below 25 °C in its original packaging, protected from moisture and direct sunlight. Keep the product out of reach of children and do not use after the expiry date printed on the label.

Noctor is taken orally. Swallow the tablet whole with a glass of water; it may be taken with or without food. Follow the prescriber’s dosing schedule and do not exceed the recommended amount.

Serious risks include severe allergic reactions such as anaphylaxis, cardiac arrhythmias, tachycardia, confusion, hallucinations, seizures and, in rare cases, life‑threatening skin reactions. Seek immediate medical attention if any of these symptoms develop.

Noctor should be avoided by individuals with known hypersensitivity to diphenhydramine or any formulation components, newborns, patients with severe asthma, narrow‑angle glaucoma, or those taking contraindicated medications such as MAO inhibitors. A healthcare professional should evaluate suitability before use.