Nytol One-A-Night (Diphenhydramine Hydrochloride)

Diphenhydramine works by competitively blocking histamine H1 receptors in the brain, which reduces the wake‑promoting effects of histamine. The drug also has anticholinergic activity, further contributing to its sedative properties and facilitating sleep onset.

The appropriate dose of Nytol One-A-Night is determined by a qualified healthcare professional based on the individual’s age, health status, and specific sleep needs. Patients should follow the prescriber’s instructions and not exceed the recommended amount.

Safety of diphenhydramine during pregnancy or lactation has not been fully established. Women who are pregnant, planning to become pregnant, or breastfeeding should discuss potential risks and benefits with their healthcare provider before using Nytol One-A-Night.

To order Nytol One-A-Night, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India supplies hospitals, pharmacies, and procurement teams worldwide, and will request verification of trade or institutional credentials before providing pricing, availability, shipping details, and any necessary import documentation.

Nytol One-A-Night contains diphenhydramine, a first‑generation antihistamine, whereas many other over‑the‑counter sleep aids use melatonin or herbal extracts. Diphenhydramine provides sedative effects through H1‑receptor blockade, but it may cause anticholinergic side effects that are less common with melatonin‑based products.

Nytol One-A-Night should be stored at ambient temperature, below 25 °C, in its original packaging to protect it from moisture and light. Keep the product out of reach of children and do not use it after the expiry date.

Nytol One-A-Night is taken orally, usually with a glass of water, shortly before bedtime. The tablet should be swallowed whole and not chewed or crushed. Patients should follow the dosage instructions provided by their prescriber.

Serious risks include severe allergic reactions such as rash, angioedema, or anaphylaxis, as well as profound central nervous system depression that can impair daily activities. Rarely, cardiac arrhythmias, confusion, or hallucinations may occur, especially in older adults or at high doses.

Individuals with known hypersensitivity to diphenhydramine or other first‑generation antihistamines should avoid Nytol One-A-Night. It is also contraindicated in patients with severe asthma, narrow‑angle glaucoma, urinary retention, or significant gastrointestinal obstruction, and should be used with caution in the elderly.