Sinoline100 ml

Sinoline is indicated for the temporary symptomatic relief of cough and associated cold symptoms, including chest congestion and throat irritation, typically due to the common cold or minor upper respiratory tract infections.

• Established/OTC-labeled use: Symptomatic relief of cough associated with loosening of mucus and thinning of bronchial secretions (guaifenesin component), reduction of cough reflex and mild sedative benefit for cough disturbing sleep (diphenhydramine component), and soothing/cooling relief of throat irritation (levomenthol component).
• Adjunct use: May be used as an adjunct to supportive care (fluids, rest, humidified air) for cold and flu symptom management; it does not treat the underlying viral infection.

Sinoline is not indicated for the treatment of chronic or persistent cough associated with smoking, asthma, chronic bronchitis, or emphysema, or when cough is accompanied by excessive secretions, without prior medical evaluation.

Guaifenesin + Levomenthol + Diphenhydramine is a fixed-dose combination oral preparation. Each dose (as per the specific approved formulation, e.g., per 5 mL of syrup/linctus or per tablet/capsule) contains:

• Guaifenesin (expectorant)
• Levomenthol (menthol) (soothing/cooling agent)
• Diphenhydramine (as diphenhydramine hydrochloride) (sedating antihistamine)

Exact strengths of each component vary by manufacturer and dosage form; always check the product label/package insert for the precise composition of the specific brand dispensed.

Sinoline is a combination medicine formulated for the short-term symptomatic relief of cough and cold symptoms. It combines three active ingredients with complementary actions: guaifenesin, an expectorant that helps loosen and thin mucus in the airways so it can be cleared more easily by coughing; levomenthol, which produces a cooling, soothing sensation in the throat and mouth and may provide mild topical relief of irritation; and diphenhydramine, a first-generation antihistamine with sedating and cough-suppressant (antitussive) properties that may also help reduce nighttime cough and associated sleep disturbance.

Sinoline is available as an oral liquid (syrup/linctus) and/or lozenge/tablet formulation, depending on the specific brand, and is intended for short-term, symptomatic use only.

Sinoline belongs to the therapeutic class of Cough and Cold Preparations — specifically a combination of an Expectorant, a sedating (first-generation) Antihistamine/Antitussive, and a topical/oral cooling (counter-irritant type) agent.

Guaifenesin + Levomenthol + Diphenhydramine combines agents with three distinct mechanisms of action:

• Guaifenesin acts as an expectorant by increasing the volume and reducing the viscosity of secretions in the trachea and bronchi, thought to occur via a reflex mechanism (gastric mucosal irritation stimulating vagal afferents) that increases respiratory tract fluid output, thereby facilitating expulsion of mucus by ciliary action and coughing.
• Levomenthol stimulates cold-sensitive receptors (TRPM8) in the mucous membranes of the mouth and throat, producing a cooling sensation and a mild local anesthetic/soothing effect that can reduce the sensation of throat irritation and the urge to cough.
• Diphenhydramine is a first-generation H1-receptor antagonist with anticholinergic and CNS-depressant (sedating) properties. Its antitussive effect is believed to result from a direct central action on the cough center in the medulla, independent of its antihistaminic activity; it also crosses the blood-brain barrier readily, producing sedation that may help with cough-related sleep disturbance.

Pharmacokinetics vary by component: guaifenesin is rapidly absorbed and metabolized hepatically with renal excretion of metabolites; diphenhydramine is well absorbed orally, extensively metabolized by the liver (CYP2D6 and other pathways), and has a plasma half-life of roughly 4-9 hours in adults (longer in elderly patients); levomenthol is absorbed from the oral mucosa/GI tract and metabolized primarily by hepatic glucuronidation.

Sinoline is intended for oral administration only.

• Shake the liquid formulation well before use, if applicable.
• Measure the liquid dose accurately using the manufacturer-supplied measuring cup, syringe, or spoon.
• Tablets or lozenges should be swallowed/dissolved as directed on the product label; lozenges are generally allowed to dissolve slowly in the mouth rather than chewed or swallowed whole.
• Take doses spaced at least 4 hours apart, and do not exceed the maximum number of doses per 24 hours stated on the label.
• Because of the sedating antihistamine component, avoid driving or operating heavy machinery until you know how Sinoline affects you.

Sinoline contains diphenhydramine, which is responsible for most of its clinically significant drug interactions:

• Monoamine oxidase inhibitors (MAOIs): Concurrent use, or use within 14 days of stopping an MAOI, is contraindicated due to the risk of prolonged and intensified anticholinergic (and CNS depressant) effects.
• Other CNS depressants (alcohol, sedatives, hypnotics, opioids, benzodiazepines, tricyclic antidepressants): Additive sedation and CNS/respiratory depression may occur; concurrent use should be avoided or closely supervised.
• Other anticholinergic drugs (e.g., other antihistamines, tricyclic antidepressants, certain antipsychotics, antispasmodics): Additive anticholinergic effects (dry mouth, urinary retention, constipation, blurred vision, confusion) may occur.

Inform your physician or pharmacist of all medications, supplements, and herbal products you are taking before starting Sinoline.

Side effects of Sinoline are mostly attributable to its diphenhydramine (antihistamine) component:

• Common: Drowsiness/sedation, dry mouth, dizziness, mild gastrointestinal upset (nausea, stomach discomfort).
• Less common: Blurred vision, difficulty urinating, constipation, thickened bronchial secretions, mild throat/mouth cooling or tingling sensation from the levomenthol component (rarely local irritation).
• Rare: Paradoxical excitation (especially in children), palpitations, skin rash/hypersensitivity reaction.

If any side effect is severe, persistent, or concerning, discontinue Sinoline and consult a physician.

Pregnancy: There are no adequate and well-controlled studies specifically on Sinoline as a combination product in pregnant women. Sinoline should be used during pregnancy only if clearly needed and if the potential benefit to the mother justifies the potential risk to the fetus. Consult a physician before use.

Lactation: The components of Sinoline, including diphenhydramine, are known to pass into breast milk and may cause drowsiness or irritability in the nursing infant. Sinoline should be used during breastfeeding only under medical advice, weighing the benefits against potential risks to the infant.

The following precautions apply when using Sinoline:

• May cause marked drowsiness/sedation; avoid alcohol and use caution when driving or operating machinery.
• Do not use for a chronic or persistent cough (as occurs with smoking, asthma, chronic bronchitis, or emphysema) or a cough accompanied by excessive phlegm/mucus, without consulting a physician, as this may indicate a condition requiring different treatment.
• Use with caution in patients with a history of cardiovascular disease, hypertension, hyperthyroidism, or increased intraocular pressure, due to the anticholinergic effects of the diphenhydramine component.
• Use with caution in elderly patients, who may be more sensitive to anticholinergic and sedative effects (confusion, dizziness, falls, urinary retention).
• Do not exceed the recommended dose, and do not use with other products containing diphenhydramine or other antihistamines/sedatives, due to the risk of additive effects.
• If symptoms persist for more than 7 days, recur, or are accompanied by high fever, rash, or persistent headache, discontinue use and seek medical advice.

Overdose of Sinoline, primarily due to the diphenhydramine component, can cause anticholinergic toxicity, which may present as severe drowsiness or paradoxical CNS excitation/agitation, hallucinations, dilated pupils, dry flushed skin, fever, tremor, rapid heartbeat, urinary retention, and in severe cases, seizures, coma, or cardiac arrhythmias.

In case of a suspected overdose of Sinoline, seek immediate medical attention or contact a poison control center/emergency services right away. Do not attempt to induce vomiting or administer any home remedy without professional medical guidance; treatment in a hospital setting is supportive and symptom-directed.

Store at room temperature (below 30°C), away from light and moisture. Keep out of reach of children. Keep the container tightly closed.

Pediatric patients: Sinoline is not recommended for children under 6 years of age (and in many formulations, under 4 years) due to the risk of serious side effects from the diphenhydramine component without established benefit in this age group; use in children 6-12 years should be under medical/pharmacist guidance at a reduced dose.

Elderly patients: Increased sensitivity to the anticholinergic and sedative effects of the diphenhydramine component; use the lowest effective dose with caution, particularly in patients with prostatic hypertrophy, glaucoma, or cognitive impairment.

Hepatic/renal impairment: Use with caution and under medical supervision, as impaired clearance of the diphenhydramine component may prolong sedative and anticholinergic effects; dose reduction or extended dosing intervals may be needed.

Sinoline is intended for short-term, symptomatic use only, generally not exceeding 7 days. If cough or cold symptoms persist beyond 7 days, worsen, or recur, or are accompanied by high fever, rash, or persistent headache, discontinue use and consult a physician, as a different diagnosis or treatment may be needed.

Expectorant (Guaifenesin); First-generation Sedating Antihistamine/Antitussive (Diphenhydramine); Topical/Oral Cooling Agent (Levomenthol); combined as a Cough and Cold Combination Preparation.

Guaifenesin + Levomenthol + Diphenhydramine works through the combined, complementary actions of its three components: guaifenesin loosens and thins airway mucus (expectorant action) to make coughing more productive and effective; diphenhydramine acts centrally on the medullary cough center to suppress the cough reflex and produces sedation via central H1-receptor blockade and anticholinergic activity; and levomenthol stimulates cold-sensitive (TRPM8) receptors in the throat and oral mucosa to produce a cooling, soothing sensation that reduces the perception of throat irritation and the urge to cough.

Sinoline is not recommended for use in children under 6 years of age (and, per many current OTC cough/cold product labels, under 4 years of age), based on regulatory and expert guidance recommending against use of over-the-counter cough and cold combination products, including sedating antihistamines, in young children due to the risk of serious adverse effects without proven benefit.

For children aged 6 to under 12 years, use of Sinoline should only occur under the guidance of a physician or pharmacist, at a reduced, age-appropriate dose, following the specific product label. Safety and efficacy of Sinoline in children under 6 years have not been established.