acefyl syrup
- Dr. Misbah Khan
- Apr 27
- 2 min read
Updated: May 9
ایسفیل سیرپ
Written by Dr. Misbah Khan [PharmD, DOW University Of Health Sciences (DUHS)], Karachi, Pakistan.

Brand:
Acefyl
Generic:
Acefylline Piperazine, Diphenhydramine
Dosage form:
Syrup
Doses:
For cough and respiratory issues:
Adults: 10-20 mL three times daily
Children (2-6 years): 5 mL three times daily
Children (6-12 years): 10 mL three times daily
For chronic obstructive pulmonary disease (COPD):
Adults: 10-20 mL three times daily
Children (6-12 years): 10 mL three times daily
For allergic conditions:
Adults: 10-20 mL three times daily
Children (2-6 years): 5 mL three times daily
Children (6-12 years): 10 mL three times daily
Price:
Rs156.75 (0.56$)
Therapeutic class:
Antihistamine
Pharmacology class:
Xanthine derivatives
Manufacturer:
Nabi Qasim Pharmaceuticals (Pvt) Ltd.
Storage:
Store it at a temperature between 15°C and 30°C in a cool, dry place,
away from direct sunlight and moisture.
Prescription drug:
Yes, it requires a prescription
Mechanism of action:
"It inhibits the PDE-4 enzyme, increasing cyclic adenosine monophosphate (cAMP) levels in cells, which reduces inflammation and improves respiratory symptoms."
Indications:
This medication is used to treat:
Bronchial asthma
Chronic bronchitis
Obstructive airway diseases
Bronchoconstriction
Allergy symptoms
Sneezing
Runny nose
Itching
Side effects:
Nausea
Drowsiness
Stomach discomfort
Diarrhea
Allergic reactions
Interactions:
Other xanthines (e.g., caffeine) (increased risk of side effects)
Corticosteroids (increased risk of adverse effects)
Beta-adrenergic agonists (increased risk of cardiovascular effects)
Lithium (potential for increased lithium levels)
CYP450 inducers (e.g., rifampin) (may reduce efficacy)
CYP450 inhibitors (e.g., erythromycin) (may increase risk of toxicity)
Alcohol (enhanced sedation and impairment)
Benzodiazepines (increased sedation)
MAO inhibitors (risk of severe hypertension)
Anticholinergic drugs (increased anticholinergic effects)
Opioids (enhanced sedation and respiratory depression)
Tricyclic antidepressants (increased anticholinergic effects and sedation)
Other CNS depressants (enhanced drowsiness and impaired cognitive
function)
Pregnancy:
According to the FDA (Food and Drug Administration), no evidence suggests Acefyl syrup poses a risk to pregnant women or their unborn babies. It can also help alleviate symptoms of cough and cold, which are common during pregnancy.
Lactation:
Breastfeeding women should consult their healthcare provider before using this syrup to ensure its safety.
Precautions:
This syrup may cause drowsiness; users should avoid activities requiring full mental alertness, such as driving or operating machinery until they understand how the syrup affects them.




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