Kaigen 120ml Codeine Syrup (Japanese )

OVERVIEW

Kaigen 120ml Codeine Syrup

Kaigen 120ml Codeine Syrup Ingredients

⁃ Dihydrocodeine Phosphate 2.5mg
⁃ dl-Methyl ephedrine Hydrochloride 6.25mg
⁃ Potassium guaiacol Sultanate 22.5mg
⁃ Chlorpheniramine Maleate 1.00mg
⁃ Anhydrous Caffeine 5mg
⁃ citric acid hydrate as an additive
⁃ Na citrate hydrate, white sugar, high fructose syrup, and containing parabens, benzoic acid Na, dehydroacetic acid Na, caramel, flavors, ethanol, ethyl vanillin, vanillin

The Kaigen 120ml Codeine Syrup (specifically known as New Kaigen Cough Suppressant Liquid W) is a Designated Class 2 OTC pharmaceutical product manufactured in Japan.¹ It is formulated to treat persistent coughs and facilitate the thinning and expulsion of phlegm.²

The following specifications are based on the standard formulation for the 120ml presentation.

 Specifications

Qualitative & Quantitative Composition

The active ingredients are typically calculated per 60 mL (the maximum daily adult dose):³

• Dihydrocodeine Phosphate (30 mg):⁴ A narcotic antitussive that acts on the cough center in the brain to suppress the cough reflex.⁵

• dl-Methylephedrine Hydrochloride (75 mg):⁶ A bronchodilator that relaxes bronchial muscles to improve breathing and reduce coughing.

• Potassium Guaiacolsulfonate (270 mg): An expectorant that thins mucus in the respiratory tract.⁷

• Chlorpheniramine Maleate (12 mg):⁸ An antihistamine that treats coughs triggered by allergies and reduces runny nose symptoms.

• Anhydrous Caffeine (60 mg): Included to counteract potential drowsiness and alleviate general malaise.⁹

• Herbal Extracts:

  • Platycodon (Bellflower) Extract (240 mg): Promotes mucus secretion and makes phlegm easier to cough up.¹⁰

  • Bakumondou (Ophiopogon Root) Extract (1.25 mL): Traditionally used to moisten the respiratory tract and soothe dry coughs.

Dosage & Administration

The syrup should be taken 4 times a day (after meals and before bed).¹¹ In severe cases, it can be taken up to 6 times a day with at least 4 hours between doses.¹²

Important Safety Precautions

• Drowsiness Warning: This medicine causes significant drowsiness.¹³ Do not drive or operate heavy machinery.¹⁴

• Avoid Alcohol: Do not consume alcohol while taking this medication as it increases the sedative effects.¹⁵

• Breastfeeding: Should be avoided while using this product as codeine and its metabolites can pass into breast milk.

• Addiction Risk: Dihydrocodeine is an opioid; avoid long-term continuous use to prevent dependence.¹⁶

• Storage: Keep in a cool, dry place away from direct sunlight. Tighten the cap securely after use.

Colour: Brown, Yellow

Kaigen 120ml Codeine Syrup