Hydryllin Syrup


Hydryllin Syrup is a medication commonly used for respiratory conditions. It provides relief for bronchospasms associated with asthma, emphysema, and chronic bronchitis. This syrup contains a combination of components, including aminophylline, ethylenediamine, theophylline, ammonium chloride, and diphenhydramine. These ingredients work together to relax bronchial smooth muscles, enhance solubility, and act as an expectorant.

Stay tuned for more detailed insights on uses, side effects, dosage, and precautions related to Hydryllin Syrup!

Uses of Hydryllin Syrup

  1. Bronchospasm Treatment and Prophylaxis:
    • Asthma: Hydryllin Syrup is commonly prescribed to manage bronchospasms in individuals with asthma. It helps relax the bronchial smooth muscles, allowing for improved airflow.
    • Emphysema: Patients with emphysema, a chronic obstructive pulmonary disease (COPD), may benefit from Hydryllin Syrup to alleviate bronchospasms.
    • Chronic Bronchitis: Hydryllin Syrup can be part of the treatment plan for chronic bronchitis, reducing inflammation and promoting easier breathing.
  2. Additional Uses:
    • Cardiac Asthma: In cases of cardiac asthma (associated with heart failure), Hydryllin Syrup may help manage respiratory symptoms.
    • Left Ventricular or Congestive Cardiac Failure: Hydryllin Syrup might be used to relieve breathing difficulties in patients with heart failure.
    • Expectorant in Cough Syrups: Some cough syrups include Hydryllin as an expectorant, aiding in the removal of mucus from the respiratory tract.

Side Effects of Hydryllin Syrup

While Hydryllin Syrup can be effective in managing respiratory symptoms, it’s essential to be aware of potential side effects. Here are some common ones:

  1. Sedation:
    • Diphenhydramine, an antihistamine present in Hydryllin Syrup, may cause drowsiness or sedation. Avoid activities that require alertness until you know how your body responds to the medication.
  2. Increased Gastric Secretion:
    • Some individuals may experience an increase in gastric (stomach) secretions while taking Hydryllin. If you notice any discomfort or changes in digestion, consult your doctor.
  3. Diuresis:
    • Hydryllin can have a diuretic effect, leading to increased urine production. Stay hydrated and monitor any excessive fluid loss.
  4. Relaxation of Certain Smooth Muscles:
    • Theophylline, one of the components in Hydryllin, can relax smooth muscles beyond the bronchial tubes. This may affect other organs, such as the gastrointestinal tract.

 Precautions and Warnings:

  • Allergies: Inform your healthcare provider if you are allergic to any of the ingredients in Hydryllin Syrup.
  • Drug Interactions: Hydryllin may interact with other medications. Consult your doctor if you are taking other drugs concurrently.
  • Underlying Conditions: Individuals with certain medical conditions (e.g., heart problems, liver disease, seizures) should use Hydryllin with caution.
  • Pregnancy and Breastfeeding: Discuss the risks and benefits with your doctor if you are pregnant or breastfeeding.

Remember, always seek professional advice to ensure safe and effective use of medications. 

Dosage of Hydryllin Syrup

  1. Recommended Dosage Hydryllin Syrup:
    • The appropriate dosage of Hydryllin Syrup depends on the patient’s age, weight, and specific respiratory condition.
    • Always follow your healthcare provider’s instructions regarding dosing.
    • Generally, the recommended dosage for adults is 10 ml (2 teaspoons) of Hydryllin Syrup, taken three times a day.
    • For children, the dosage varies based on age:
      • Children 6 to 12 years: Usually 5 ml (1 teaspoon) three times a day.
      • Children 2 to 6 years: Typically 2.5 ml (half a teaspoon) three times a day.
      • Infants under 2 years: Dosage should be determined by a pediatrician.
  2. Adjustments for Specific Patient Groups:
    • Elderly Patients: Elderly individuals may require lower doses due to potential age-related changes in drug metabolism. Consult a doctor for personalized recommendations.
    • Renal Impairment: Adjustments are necessary for patients with kidney problems. Dosing may need to be reduced to prevent accumulation of theophylline.
    • Liver Dysfunction: Liver function affects theophylline metabolism. Doses may need modification in patients with liver issues.
    • Smokers: Smokers metabolize theophylline faster. Higher doses may be needed.
    • Pregnant or Breastfeeding Women: Consult a healthcare professional for safe dosing during pregnancy or lactation.


  1. Possible Drug Interactions:
    • Hydryllin Syrup may interact with other medications. It’s crucial to inform your healthcare provider about all the drugs you are currently taking.
    • Common interactions include:
      • Cimetidine: May increase theophylline levels.
      • Propranolol: Can alter theophylline metabolism.
      • Phenytoin: May decrease theophylline effectiveness.
      • Rifampicin: Can reduce theophylline levels.
      • Fluvoxamine: May increase theophylline concentration.
    • Always consult your doctor before combining Hydryllin with any other medication.
  2. Caution with Other Medications:
    • Beta-Blockers: Combining Hydryllin with beta-blockers (e.g., propranolol) may lead to increased theophylline levels.
    • Anticonvulsants: Phenytoin and other anticonvulsants can affect theophylline metabolism.
    • Antacids: Some antacids may alter the absorption of theophylline.
    • Fluvoxamine: This antidepressant can elevate theophylline levels.
    • Rifampicin: An antibiotic that may decrease theophylline effectiveness.

Remember, always seek professional advice to ensure safe and effective use of medications. 


In summary, Hydryllin Syrup is a valuable medication for managing respiratory conditions. Here are the key points to remember:

  • Composition: Hydryllin Syrup contains aminophylline, ethylenediamine, theophylline, ammonium chloride, and diphenhydramine.
  • Uses: It treats bronchospasms associated with asthma, emphysema, and chronic bronchitis. Additionally, it can be beneficial in cardiac asthma and heart failure.
  • Advantages: Hydryllin Syrup’s comprehensive action, effective bronchodilation, and expectorant properties set it apart.
  • Side Effects: Be aware of potential sedation, increased gastric secretion, diuresis, and muscle relaxation.
  • Dosage: Follow your healthcare provider’s recommendations based on age and condition.
  • Interactions: Consult your doctor regarding possible drug interactions.
  • Consult a Healthcare Professional: Always seek professional advice before starting any new medication.

Remember, your health is essential, and individual responses may vary. Consult a healthcare professional for personalized guidance. 

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