Benadryl Cough Syrup – Side Effects, Dosage and Uses

What is Benadryl Cough Syrup?

Benadryl Cough Syrup is one of the very powerful and effective medicines used for the treatment of a cough, cold, sore throat, skin rash, itching and other medical conditions. It is also used in the treatment of motion sickness and to induce sleep.

It should be taken in prescribed dosage for the correct duration of time and frequency. The syrup is a product of Johnson & Johnson Ltd. and is available in various bottles of 50 ml, 150 ml, and 450 ml.

benadryl cough syrup

  1. Generic Medicine in The Syrup?
  2. Dosage of This Syrup
  3. Working Mechanism of This Syrup
  4. Why is This Syrup Prescribed?
  5. Possible Side Effects of This Syrup
  6. Precautions While Using This Syrup
  7. Using The Syrup During Pregnancy and Breastfeeding
  8. Dosage for Children and Infants
  9. Where to Buy This Syrup?
  10. Patients Queries About The Syrup
  11. Reference

Generic Medicine in The Syrup

The generic ingredients of Benadryl cough syrup are:

  • Diphenhydramine Hydrochloride I.P. 14.08 mg
  • Ammonium Chloride I.P. 138 mg
  • Ethanol (95%) I.P. 0.2625 ml (Expressed as ethanol I.P.) 5.0% v/v

Dosage of This Syrup

Use this medicine exactly as prescribed by your doctor or as directed on the label.

Benadryl cough syrup should not be used for children below 2 years of age without medical advice.

For Children between 2-5yrs – ½ teaspoonful (2.5 ml)

Children between 6-12 yrs -1 teaspoonful (5ml)

For Over 12yrs and adults -2 teaspoonful (10ml)

benadryl cough syrup

The dose of Benadryl cough syrup should be taken every 4 hours but should not exceed 12 teaspoonfuls syrup in 24 hours. Consult your doctor in case your symptoms do not improve after 7 days of treatment.

Working Mechanism of This Syrup

The working of this cough syrup can be understood from the working of its generic ingredients:

Diphenhydramine Hydrochloride is an antihistaminic medication. It reduces the effect of natural chemical histamine in the body. Histamine is responsible to produce the symptoms of itching, sneezing, congestion, watery eyes, itchy throat, runny nose and other allergic reactions. Diphenhydramine blocks the action of histamine and used in the treatment of motion sickness, sneezing, itching, insomnia and other allergic symptoms.

Ammonium Chloride works by decreasing secretions of sticky and thick mucus. Also, it helps in removing mucus from the thin airways, making the breathing easy. It thins mucus and used in the treatment of a cough with mucus.

Why is This Syrup Prescribed?

Benadryl cough syrup has the following uses:

  • Relief a from a cough and cold
  • Thins mucus with relief coughing
  • Relives congestion
  • For multi-symptom relief
  • Sneezing, runny nose, watery eyes, irritated eyes, cold
  • Skin rash
  • Itching
  • Soothes a sore throat
  • Acts within 15 minutes

Contraindications of Benadryl Cough Syrup

  • Hypersensitivity
  • Breastfeeding
  • Heat cramps
  • Acute dehydration
  • Azotemia

Possible Side Effects of This Syrup

This cough syrup has the following side-effects:

  • Diarrhea, Constipation, Nausea, GI Disturbances
  • Sedation, Drowsiness, Dizziness, Dry eyes, Blurred vision, Headache, CNS Depression
  • Numbness, Tingling, Itching, Rash
  • Swelling of face, throat, lips or tongue
  • Difficulty in swallowing
  • Throat disorder
  • Difficulty breathing, Chest tightness
  • Heartburn, Heart palpitations, Irregular or rapid heartbeat
  • Loss of coordination
  • Loss of appetite
  • Hallucinations
  • Low blood pressure
  • Stomach pain
  • Dry Mouth
  • Thickened Respiratory Secretion
  • Blood Dyscrasias
  • Urinary Retention

This is not a comprehensive list of all the possible side effects. If any of these side effects persist longer, consult a doctor immediately.

Precautions While Using This Syrup

You should take following precautions while administering this medicine:

  • Avoid driving or operating dangerous machinery as it may decrease alertness.
  • Avoid consuming alcohol when taking Benadryl syrup, as it may cause excessive sleepiness, drowsiness/dizziness.
  • Do not take this syrup if you are allergic to any of its ingredients.
  • Consult your doctor before using this syrup if you have medical conditions such as asthma, high blood pressure, liver/kidney disease, glaucoma, epilepsy, cardiovascular disease, low blood pressure, thyroid disorder, bladder obstruction/other urination problem, chronic bronchitis, hypertension and other conditions.
  • Do not give this syrup to the patients an with an inflammatory digestive tract or bowel disease.
  • Inform your doctor about any allergies, current medication, and pre-existing disease.
  • Consult your doctor before taking this medicine during pregnancy and breastfeeding.
  • Do not use if the expiry date printed on the pack has passed.
  • Do not flush the medicine down the toilet or pour them into drainage unless instructed to do so.
  • Use with precaution if the patient is an elderly person or infant.
  • Inform your doctor if you are on other medication like antibiotics, antacids, NSAIDs,etc.,
  • Do not use this syrup to make a child sleepy.
  • Keep the bottle in cool and dry place, Avoid direct sunlight and Shake well before use.
  • Do not store medicine in the bathroom or near a sink.
  • Keep this medicine out of the reach of children and pets.

Using The Syrup During Pregnancy and Breastfeeding

This syrup is classified in the pregnancy category ‘B’ by FDA. It is safe to take this medicine during pregnancy, but always consult your doctor before using it. Adequate and well-controlled studies have failed to demonstrate any risk to the fetus in the first trimester of pregnancy. However, you should not use any medicine during the pregnancy unless advised by a qualified doctor.

During breastfeeding usage of this medicine should be avoided as Benadryl can pass into breast milk and may harm a nursing baby. It may also slow breast milk production. Consult your doctor before using this medicine if you are breastfeeding

Dosage for Children and Infants

Benadryl Cough Syrup is safe for children who are above 2 years of age and are in good physical health. However, if needed, the doctor may prescribe the syrup for younger children in adjusted dosage under his strict observation. The syrup is not suitable for infants or prematurely born babies. Consult a doctor before giving this medicine to children. Children may feel drowsiness and lethargic after taking the syrup.

Where to Buy This Syrup?

Benadryl cough syrup is available at all major drugstores and pharmacies. It is sold as an Over the counter (OTC) product. But always consult your doctor before using the medicine.

Patients Queries About The Syrup

What should I do in case of an overdose of this medicine?
A small overdose of Benadryl syrup is no cause for concern. But in case of large overdose, symptoms may be difficult to notice. Consult your doctor or nearest healthcare center immediately, as it requires immediate attention.

How long should I use Benadryl cough syrup to see any improvement in my condition?
Benadryl cough syrup is very fast, as it acts within 15 minutes. But it may take time to show any signs of improvement depending upon your current medical condition and the usage frequency, as prescribed by your doctor.

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