Suthin Gold
Suthin Gold Uses, Dosage, Side Effects, Food Interaction and all others data.
Hydroxypropyl methylcellulose belongs to the group of medicines known as artificial tears. It is used to relieve dryness and irritation caused by reduced tear flow. It helps prevent damage to the eye in certain eye diseases. Hydroxypropyl methylcellulose may also be used to moisten hard contact lenses and artificial eyes. In addition, it may be used in certain eye examinations.
Hypromellose is the most commonly used in hydrophilic matrix fabrication. It allows for controlled release of drug substances, increasing duration of therapeutic effects . The physical characteristics of this drug resemble natural tears, providing lubrication to the ocular surface and maintaining corneal hydration in dry eye syndromes .
Hypromellose is considered an inert substance as it has no direct pharmacological activity. The viscosity promoting properties of hypromellose prolong the retention time and improve adhesion of synthetic tears to the cornea and conjunctiva. As a result, the tear film breakdown time is prolonged and/or the tear film stability is enhanced. A stable tear film protects the cornea from dryness and epithelial cells .
Hypromellose is a methyl and hydroxypropyl mixed ether of cellulose. It is utilized as artificial tears to prevent conjunctival and corneal damage due to impaired lacrimal secretions. It is also used as a visco-elastic promoting agent by maintaining a deep, viscous chamber and allowing for easier manipulation, helping the vitreous surface to be pushed back, thus preventing the formation of a postoperative flat chamber .
Naphazoline is a rapid acting imidazoline sympathomimetic vasoconstrictor of ocular or nasal artierioles. It acts to decrease congestion and is found in many over the counter (OTC) eye drops and nasal preparations.
Naphazoline was first developed in 1942 as a nasal formulation for congestion.
Naphazoline is a sympathomimetic alpha adrenergic agonist that acts to vasoconstrict nasal or ocular arterioles, resulting in reduced congestion at the site of administration.
| Trade Name | Suthin Gold |
| Generic | Naphazoline + Hypromellose + Chlorpheniramine / Chlorphenamine |
| Weight | 0.1% |
| Type | Eye Drops |
| Therapeutic Class | |
| Manufacturer | Pharmatak Opthalmics I Pvt Ltd |
| Available Country | India |
| Last Updated: | September 19, 2023 at 7:00 am |
Uses
Hypromellose enriched with Carbomer 980 is a long acting eye gel for lubricating the surface of the eye for all patients with ocular discomfort. The slight hypotonicity of the gel is rapidly "neutralised" by the slightly hypertonic tear fluid caused by dry eyes.
Naphazoline is a sympathomimetic vasoconstrictor used for the symptomatic relief of redness and itching of the eye, and nasal congestion.
Naphazoline is indicated for use as OTC eyedrops for ocular vasoconstriction or as a nasal preparation for nasal congestion.
Suthin Gold is also used to associated treatment for these conditions: Dry Eyes, Ocular Discomfort, Ocular IrritationBacterial Conjunctivitis, Blepharoconjunctivitis, Conjunctivitis, Conjunctivitis allergic, Dacryocystitis, Dacryostenosis, Dermatitis, Eczematous of the Eyelid, Eye Pain, Eye redness, Iritis, Lacrimation, Nasal Allergies, Nasal Congestion, Noninfective conjunctivitis, Otitis Media (OM), Photophobia, Foreign body sensation in eye, Ocular bacterial infections, Ocular vasoconstriction
How Suthin Gold works
Promotes corneal wetting by the stabilization and thickening the precorneal tear film and prolonging the tear film breakdown time, which is usually shortened in dry eye conditions. Hypromellose also acts to lubricate and protect the eye .
The surface active properties of the vehicles found in artificial tears solutions act to stabilize the tear film and increase tear viscosity to prevent delay tear evaporation and delay tear drainage .
In the intact eye, the corneal surface is moistened primarily by the mucin that is produced in the conjunctiva. Mucin is adsorbed on the corneal surface and forms a hydrophilic surface. This creates a moisture barrier. In the typical dry eye, and particularly in case of mucin deficiency, the application of artificial tear fluid is highly recommended. Both its surface activity and its adsorptive capacity make hypromellose optimal for this use. Hypromellose has a physical-chemical action and leads to, in an aqueous solution, a reduced surface tension as well as an increased level of viscosity. Hypromellose adheres well to the cornea and conjunctiva and provides ample moisture. Irritation symptoms caused by blinking, which occur in the case of tear fluid deficiency, are therefore decreased and symptoms of epithelial desiccation are also alleviated .
Naphazoline is a vasoconstrictor that functions by stimulating alpha adrenergic receptors in arterioles leading to decreased congestion at the site of administration.
Naphazoline causes the release of norepinephrine in sympathetic nerves. Norepinephrine binds to alpha adrenergic receptors and causes vasoconstriction. Naphazoline is also a mild beta adrenergic receptor agonist, which can cause rebound vasodilation after the alpha adrenergic stimulation has ended. Naphazoline's release of norepinephrine also triggers a negative feedback loop which decreases production of norepinephrine, which can lead to rhinitis medicamentosa after long term use when naphazoline is stopped.
Dosage
Suthin Gold dosage
Instill 1 or 2 drops in the conjunctival sac of the affected eye(s), as needed. The frequency of administration depends on the severity of the condition. On average, one drop is administered 1-3 times daily. If needed, Hypromellose may be administered more frequently.
Side Effects
Hypromellose enriched with Carbomer 980 is very well tolerated by users. However, some cases of burning, stinging, allergic reactions or red eyes after instillation have been reported. Transient blurring of vision after administration has also been reported.
Toxicity
LD 50 (Rat): > 5 g/kg .
Hypromellose is considered low toxicity to non-toxic .
Adverse events may include blurred vision and contact dermatitis . Hypersensitivity and intolerance reactions may occur (for example, eye burning, pain, increased lacrimation, a sensation of foreign body, conjunctival hyperemia, eyelid swelling, pruritus). The stickiness sensation of the eyelids, the decreased sense of smell, photosensitivity .
In high doses or when ingested, naphazoline can lead to central nervous system depression (which can progress to coma and death), hypothermia, bradycardia, and death. This effect is especially pronounced in children under 6 years.
Long term use of naphazoline can lead to rhinitis medicamentosa once naphazoline is stopped. This condition is a result of norepinephrine release by naphazoline triggering a negative feedback loop.
Safety and effectiveness in children under 12 has not been established. Studies in elderly patients have yet to be performed. Risk in pregnancy, breast feeding, and on overall fertility have not been established, though pregnant and breast feeding patients should consider the risk and benefit before starting naphazoline treatment.
Precaution
If eye pains, changes in vision, continued redness or irritation of the eye are noticed Hypromellose must be discontinued and a doctor should be consulted. If Hypromellose changes color or becomes cloudy, the product should not be used.
Interaction
Hypromellose can be used in combination with contact lenses. No compatibility study with lens material is available.
Volume of Distribution
Distribution data for naphazoline are scarce but imidazoline compounds are distributed throughout the body, and can cross the blood-brain barrier.
Elimination Route
Not systemically absorbed .
Absorption data for naphazoline are scarce but imidazoline compounds in general are weakly basic and lipophilic, with high bioavailability from the gastrointestinal tract.
Half Life
Half life has not been determined but effects last for 4 to 8 hours. Other imidazoline compounds have half lives varying from 2 to 12 hours.
Clearance
Clearance data for naphazoline is unavailable.
Elimination Route
Imidazoline compounds undergo some hepatic metabolism but a large fraction of the dose may be excreted unchanged in the urine. Urinary excretion is higher with more acidic urine.
Pregnancy & Breastfeeding use
There is no experience regarding the safety of Hypromellose in human pregnancy or lactation. Studies in the pediatric population have not been performed.
Contraindication
Hypersensitivity to this drug or to any ingredient in the formulation or component of the container.
Acute Overdose
No case of overdose has been reported.
Storage Condition
Store in a cool dry place, away from light. Keep out of reach of children. Do not touch tip of the tube surface since this may contaminate the gel. After one month of the opening do not use the medicine of tube.
Innovators Monograph
You find simplified version here Suthin Gold
