A-Cof syrup from ACME Laboratories Ltd. typically contains the following active ingredients per 5 ml:

• Dextromethorphan Hydrobromide BP: 20 mg (a cough suppressant)
• Phenylephrine Hydrochloride BP: 10 mg (a decongestant)
• Triprolidine Hydrochloride BP: 2.5 mg (an antihistamine)

This combination means A-Cof is used for the temporary relief of symptoms associated with the common cold, hay fever (allergic rhinitis), or other upper respiratory allergies, such as:

• Non-productive cough due to minor throat or bronchial irritation. 
• Runny nose. 
• Sneezing. 
• Itching of the nose or throat. 
• Itchy and watery eyes.
• Nasal congestion.

Dosage:

• Adults and children over 12 years: 1 teaspoonful (5 ml) every 4 hours.
• Children 6 to under 12 years: ½ teaspoonful (2.5 ml) every 4 hours.
• It is not recommended for children under 2 years old. For children aged 2 to 6 years, use with caution and as advised by a physician.

Possible Side Effects:

Common side effects may include drowsiness, dizziness, and constipation.

Important Considerations:

• This medication may cause drowsiness. If affected, do not drive a car or operate machinery.
• Avoid alcoholic beverages while taking this medicine.
• Use with caution in patients with epilepsy, prostatic hypertrophy, glaucoma, hepatic disease, hypertension, heart disease, diabetes, or hyperthyroidism.
• Do not use if you have a hypersensitivity to any of the ingredients.
• It is contraindicated in patients who are taking or have taken Monoamine Oxidase Inhibitors (MAOIs) within the past 2 weeks.
• Consult a physician before administering this combination to children less than 6 years.
• If symptoms persist for more than a week or are accompanied by a high fever, consult a doctor.