Iniston Tos (Dextromethorphan Hydrobromide)

Dextromethorphan Hydrobromide is used to manage cough by acting on the central cough reflex pathway.

• Cough: Provides symptomatic relief of acute cough associated with common colds.
• Dry cough: Reduces the frequency and intensity of non‑productive cough.
• Throat irritation: Alleviates cough caused by mild throat irritation.

• Dextromethorphan acts centrally as a sigma‑1 receptor agonist and an NMDA receptor antagonist, modulating neuronal activity in the brainstem cough center. By inhibiting excitatory neurotransmission, it raises the threshold for cough initiation, thereby suppressing the cough reflex without affecting respiratory function.

Common Side Effects

• Drowsiness: Mild sedation may occur, especially at higher doses.
• Nausea: Transient stomach upset is reported in some users.
• Dizziness: Light‑headedness can appear shortly after ingestion.
• Dry mouth: Reduced salivation is a frequent complaint.

Serious or Rare Side Effects

• Allergic reactions: Rash, itching, or swelling may indicate hypersensitivity.
• Serotonin syndrome: Rare but severe condition when combined with serotonergic agents.
• Respiratory depression: High doses can depress breathing, especially in children.
• Hallucinations or psychotic symptoms: Uncommon central nervous system effects.
• Abnormal heart rhythm: Rare cardiac arrhythmias have been observed.

Before using Iniston Tos, consider the following precautions:

• Age restriction: Use only in individuals above the age specified by the prescriber.
• Existing medical conditions: Evaluate patients with liver disease or severe respiratory disorders.
• Concomitant medications: Review all current drugs for potential serotonergic activity.
• Alcohol consumption: Advise patients to limit alcohol, which may increase sedation.
• Storage: Store at room temperature: keep in the original container, protect from moisture and heat.

Dextromethorphan may interact with several drug classes.

Major Interactions (Avoid)

• MAO inhibitors: Risk of severe hypertensive or serotonergic reactions.
• SSRIs and SNRIs: May precipitate serotonin syndrome when combined.
• Tricyclic antidepressants: Increase the potential for serotonin toxicity.

Moderate Interactions (Monitor Closely)

• Alcohol: Can enhance drowsiness and impair coordination.
• Antihistamines: May increase sedation and dizziness.
• Opioids: Additive central nervous system depression may occur.