Nayanpat

Nayanpat Uses, Dosage, Side Effects, Food Interaction and all others data.

Benzalkonium chloride is a quaternary ammonium antiseptic and disinfectant. It is also used as an antimicrobial preservative for pharmaceutical products. It is also used for the disinfection of rigid contact lenses.

Benzalkonium chloride solutions are generally categorized as biocidal agents with relative long durations of action. Their spectrum of activity has been demonstrated against bacteria, to some viruses, fungi, and protozoa , although bacterial spores are treated as being resistant to the agent. Additionally, the agent generally shows more activity against gram-positive than gram-negative bacteria . Finally, solutions of benzalkonium chloride are bacteriostatic or bactericidal based on their concentration. Bacteriostatic agents act to prevent further growth of bacterial organisms that are present while bactericidal agents function to kill bacteria that are present . In general, the activity of the agent is not largely affected by pH, but such activity does increase substantially at higher temperatures and prolonged exposure times.

Olopatadine, an antihistamine, works by blocking the action of histamine in the body, which reduces allergy symptoms. Olopatadine Hydrochloride treats sneezing, itching, runny nose, and other nasal symptoms of allergies. Olopatadine Nasal Spray contains 0.6% w/v Olopatadine (base) in a nonsterile aqueous solution with pH of approximately 3.7. After initial priming (5 sprays), each metered spray from the nasal applicator delivers 100 microliters of the aqueous solution containing 665 mcg of olopatadine Hydrochloride, which is equivalent to 600 mcg of Olopatadine (base). Olopatadine Nasal Spray also contains benzalkonium chloride (0.01%), dibasic sodium phosphate, edetate disodium, sodium chloride, hydrochloric acid and/or sodium hydroxide (to adjust pH), and purified water.

Inflammatory reactions in response to various stimuli are mediated by endogenous mediators and other pro-inflammatory factors. Histamine receptor activation and mast cell degranulation are primary mechanisms that cause inflammatory reactions such as ocular itching, hyperemia, chemosis, eyelid swelling, and tearing of seasonal allergic conjunctivitis. Olopatadine is an anti-allergenic molecule and mast cell stabilizer that inhibits the in vivo type 1 immediate hypersensitivity reaction. By blocking the effects of histamine, olopatadine works to reduce the symptoms of allergies and inflammation at various sites of administration, including the eyes and nose. It has shown to exert antihistaminic effects in isolated tissues, animal models, and humans. Olopatadine also demonstrated dose-dependent inhibition of immunologically-stimulated release of histamine from rat basophilic leukemia cells and human conjunctival mast cells in vitro. Olopatadine has a relatively rapid onset of action and prolonged duration, where it was shown to mediate anti-histaminic effects at 5 minutes to 24 hours post-administration.

While olopatadine is a non-sedating antihistamine agent, there have been reports of somnolence in some patients taking nasal olopatadine during clinical trials. Temporary blurred vision or other visual disturbances were observed following ophthalmic administration. Olopatadine has negligible effects on alpha-adrenergic, dopamine, muscarinic type 1 and 2, and serotonin receptors. In clinical trials, there was no evidence of any effect of olopatadine on QT prolongation was observed following intranasal administration.

Nayanpat
Uses
Dosage
Side Effect
Precautions
Interactions
Uses during Pregnancy
Uses during Breastfeeding
Accute Overdose
Food Interaction
Half Life
Volume of Distribution
Clearance
Interaction With other Medicine
Contradiction
Storage

Trade Name	Nayanpat
Generic	Olopatadine + Benzalkonium
Weight	0.1%
Type	Eye Drops
Therapeutic Class
Manufacturer
Available Country	India
Last Updated:	September 19, 2023 at 7:00 am

Uses

Higher concentrations of Benzalkonium chloride is used as an antiseptic and disinfectant. This is also widely used as a preservative in eye-drops.

Olopatadine Nasal Spray is an H1 receptor antagonist used for the relief of the symptoms of seasonal allergic rhinitis in adults and children 6 years of age and older.

Nayanpat is also used to associated treatment for these conditions: Diaper Dermatitis, Dry Eye Syndrome (DES), Eye and eyelid infections, Gingivitis, Hemorrhoids, Infantile Eczema, Mouth irritation, Pruritus Ani, Tonsillitis, Throat inflammation, Antisepsis, Disinfection therapy, Eye disinfection, Eye lubrication, Hand Hygiene, Skin disinfection, Wound treatmentAllergic Rhinitis (AR), Seasonal Allergic Conjunctivitis, Seasonal Allergic Rhinitis

How Nayanpat works

Although not entirely elucidated, the bactericidal action of benzalkonium chloride is believed to be due to the disruption of intermolecular interactions. Such disruption can cause the dissociation of cellular membrane lipid bilayers of bacteria, resulting in compromised cellular permeability control and the leakage of important cellular contents. Additionally, other important molecular complexes like enzymes which control the maintenance of a great range of respiratory and metabolic cellular activities, are also susceptible to such deactivation. Consequently, a variety of critical intermolecular interactions and tertiary structures in very highly specific biochemical systems that allow bacterial agents to function normally can be readily disrupted or deactivated by cationic surfactants like benzalkonium chloride. .

Histamine is a biogenic vasoactive amine that binds to its receptors, which are G-protein coupled receptors. Signaling through the histamine H1 receptor is thought to primarily promote the activation of inflammatory reactions, such as allergy, asthma, and autoimmune diseases. H1 receptor signaling activates the intracellular transcription factors, such as IP3, PLC, PKC, DAG, and intracellular calcium ions, which all work to activate further downstream cascades. Activated downstream cascades lead to the production of cytokines, the release of mast cell inflammatory mediators, synthesis of prostacyclins, activation of platelet factor, as well as the synthesis of nitric oxide, arachidonic acid, and thromboxane, which all contribute to inflammatory reactions.

Olopatadine is an anti-allergic molecule that works via several mechanisms. As a mast cell stabilizer, it stabilizes rodent basophils and human conjunctival mast cells and inhibits the immunologically-stimulated release of histamine. Olopatadine acts as an antagonist at the histamine H1 receptors with high selectivity, which is explained by a unique receptor binding pocket that consists of the aspartate residue in the third transmembrane helix and other sites in the H1 receptor. Upon binding, olopatadine blocks the H1 receptor signaling pathway, inhibiting the release of inflammatory mediators, such as tryptase, prostaglandin D2, TNF-alpha, as well as pro-inflammatory cytokines. It also decreases chemotaxis and inhibits eosinophil activation. In vitro, olopatadine was shown to inhibit epithelial cell intercellular adhesion molecule-1 (ICAM-1), which promotes the recruitment of migrating pro-inflammatory mediators.

Dosage

Nayanpat dosage

Tincture of benzalkonium chloride 1:750 is used for the preoperative disinfection of unbroken skin or treatment of superficial injuries.
For preoperative disinfection of mucous membranes and denuded skin, benzalkonium chloride solution in concentrations of 1:10000 to 1:2000 is used.
For irrigation of the eye, a solution of 1:10000 to 1:5000 is used.
For urinary bladder and urethral irrigation, a solution 1:5000 to 1:20000 is used.
For vaginal douche and irrigation, benzalkonium chloride solution 1:5000 to 1:20000.

Adults and Adolescents 12 years of age and older: Two sprays per nostril twice daily.

Children 6 to 11 years of age: One spray per nostril twice daily.

Administer OlopatadineNasal Spray by the intranasal route only.

Side Effects

Repeated application may cause hypersensitivity reactions. May cause nausea and vomiting if ingested.

A bitter taste in the mouth, nosebleeds, or irritation/soreness in the nose may occur. Drowsiness may rarely occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

Toxicity

An oral dose of 100-400 mg/kg or a parenteral dose of 5-15 mg/kg is believed to be fatal in humans .

A potential concern for larger concentrations of benzalkonium chloride to possibly cause corneal damage when implemented as an excipient ingredient in aqueous eye products is an issue that should be discussed between potential patents and their health care providers . Since decreased regular blinking and tear generation in patients experiencing dry eyes due to any number of eye conditions can result in reduced dilution of applied eye drops containing the benzalkonium chloride preservative , alternative options including benzalkonium chloride-free products should be considered.

Additionally, benzalkonium chloride has been reported to cause punctate keratopathy and/or toxic ulcerative keratopathy. In addition, benzalkonium chloride may cause eye irritation and is known to discolour soft contact lenses . There may also be the possibility of benzalkonium chloride containing eye drops to cause some stinging and pain .

There is the possibility of ototoxicity occurring when benzalkonium chloride containing ear drops are applied to the ear .

Benzalkonium chloride used as a preservative in nebulised solutions of anti-asthma drugs has been reported to cause dose-related bronchoconstriction especially in asthmatic patients and has been associated with the precipitation of respiratory arrest .

Despite the fairly widespread cutaneous use of benzalkonium chloride, only limited human evidence of sensitization in relatively small populations of individuals have been reported . Nevertheless, the main adverse effect for topical formulations of benzalkonium chloride is usually the warning 'may cause local irritation' .

Based on the findings of an acute toxicity study in animals, the oral LD₅₀ of olopatadine was >1150 mg/kg in mice and >3870 mg/kg in rats. The Lowest published toxic dose via the oral route was 20 mg/kg in rat and 0.1 mg/kg in mouse.

There are no known reports on overdosage following oral, ophthalmic, or intranasal administration of olopatadine. Likely symptoms of antihistamine overdose may include drowsiness in adults and, initially, agitation and restlessness, followed by drowsiness in children. In case of suspected overdose, supportive and symptomatic treatment is recommended.

Precaution

Before initial use, Olopatadine Nasal Spray by releasing 5 sprays or until a fine mist appears. When Olopatadine Nasal Spray has not been used for more than 7 days, re-prime by releasing 2 sprays. Avoid spraying Olopatadine Nasal Spray into the eyes. Patients should be informed to avoid spraying Olopatadine Nasal Spray in their eyes.

Interaction

Disinfectants containing quaternary ammonium salts should not be used for skin preparation before injections of viscoelastic solutions. Hyaluronic acid will precipitate in the presence of these salts.

Interaction with other medications have not been investigated.

Volume of Distribution

When applied as a topical antibacterial, antiseptic, disinfectant, or sanitizer it is believed that molecules of benzalkonium chloride are poorly absorbed (perhaps due to their large, positively charged nature ), especially considering expectations for such topical applications to keep their biocidal agents available for action at the topical level and to not be absorbed significantly beyond it.

When benzalkonium chloride is implemented as an excipient preservative ingredient in various eye, nose, and ear aqueous products, such products will always have other active pharmacological agents whose volume of distribution will be of greater importance. In these cases the excipients will only ever be present at the minimal levels necessary to maintain the integrity of the product substance.

Moreover, Benzalkonium chloride is currently listed as a Category III ingredient by the United States Food and Drug Administration . Ingredients are listed in the FDA Category III when the data available about them are insufficient to classify as safe and effective, requiring further testing to determine more formal details about elements like human pharmacokinetic studies, and studies on the ingredients' absorption, distribution, metabolism, and excretion.

In an open-label study consisting of healthy Chinese subjects receiving oral administration of olopatadine, the mean apparent volume of distribution was 133.83 L.

Elimination Route

Percutaneous absorption is considered to be insignificant .

In one study, benzalkonium chloride absorption was evaluated in women using tampons containing the agent. Venous blood samples were drawn 15 minutes before the tampon application and then again at 15 min, 1 h, 3 h, and 24 h after application. Benzalkonium chloride was not detected in any of the blood samples at any time tested.

Similarly, in another study, benzalkonium chloride absorption was tested in women using tampons containing the agent. Venous blood and breast milk samples were taken 15 minutes before application and 3 h and 24 h after tampon administration. Benzalkonium chloride was not found in any of the subjects' samples. .

Moreover, in a study where benzalkonium chloride solution was placed on the corneal surface of rabbit subjects, at various intervals after administration, the rabbits' eyes would be washed with 1 mL saline and the following tissues and fluids were removed: bulbar and palpebral conjunctiva, aqueous humour, corneal epithelium, endothelium and stroma, iris-ciliary body, lens, vitreous, retina, and choroid. Plasma samples were obtained with direct cardiac punctures. After administration of one drop, benzalkonium chloride was found in the corneal epithelium, endothelium, and stroma, and in the bulbar and palpebral conjunctivae. Benzalkonium chloride loss from ocular tissues was such that about one-third to two thirds of its concentration (depending on the tissue) at 30 min remained after 24 hr; measurable values existed for as long as 120 hr. The administration of multiple drops led to continued accumulation of benzalkonium chloride. .

Ocular administration of olopatadine in healthy subjects resulted in the Cmax of 1.6 ± 0.9 ng/mL, which was reached after about 2.0 hours. The AUC was 9.7 ± 4.4 ngxh/mL.

The average absolute bioavaiability of intranasal olopatadine is about 57%. Following intranasal administration in healthy subjects, the Cmax of 6.0 ± 8.99 ng/mL at steady-state was reached between 30 minutes to 1 hour after twice daily intranasal administration. The average AUC was 66.0 ± 26.8 ng·h/mL. In patients with seasonal allergic rhinitis, the Cmax of 23.3 ± 6.2 ng/mL at steady-state was reached between 15 minutes and 2 hours post-dosing and the average AUC was 78.0 ± 13.9 ng·h/mL.

Half Life

Following ocular administration, the elimination half-life of olopatadine was 3.4 ± 1.2 hours. In oral pharmacokinetics study, the elimination half-life was reported to be 8 to 12 hours.

Clearance

In an open-label study consisting of healthy Chinese subjects receiving oral administration of olopatadine, the mean apparent oral clearance (CL/F) was 23.45 L/h.

Elimination Route

Administered benzalkonium chloride is likely eliminated largely in faeces, similar to other quaternary ammonium compounds .

Olopatadine is mainly eliminated through urinary excretion. Following oral administration, about 70% and 17% of the total dose was recovered in the urine and feces, respectively.

Pregnancy & Breastfeeding use

Pregnancy Category C; No adequate and well-controlled studies in pregnant women have been conducted. Olopatadine Nasal Spray should be used in pregnant women only if the potential benefit to the mother justifies the potential risk to the embryo or fetus.

Lactation: It is not known whether topical nasal administration could result in sufficient systemic absorption to produce detectable quantities in human breast milk. Olopatadine Nasal Spray should be used by nursing mothers only if the potential benefit to the patient outweighs the potential risks to the infant.

Contraindication

Incompatible with soaps and other anionic surfactants, citrates, iodides, nitrates, permanganates, salicylates, silver salts, tartrates, and zinc oxide and sulfate.