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Health is the most basic factor for leading a peaceful and prosperous life. Benadryl is a medicine which works as anti-histamine. Its chemical formulation comprises of diphenhydramine which blocks the effects of histamine, which is a naturally occurring chemical in human body.

Why we give Benadryl dosage for kids?

Benadryl is used to treat the following illnesses in grownups and kids.
• Sneezing
• Hives
• Itching
• Runny nose
• Watery eyes
• Rashes
• Common cold
• Other allergies
There are other uses of Benadryl, but it depends on the patient if his body accepts the formulation. Benadryl is prescribed to treat motion sickness, to induce sleep, to suppress coughs and also to treat mild forms of Parkinson’s disease.
Benadryl comes in the form of a tablet, injection and syrup also. Mostly the syrup is given as a Benadryl dosage for kids, it is because all kids cannot swallow tablets, and are afraid of injections so syrups are easy to manage with kids.

Benadryl dosage for kids and adults

Benadryl dosage for kids,

In the above table we have given the physician’s approved dosage for kids, as per their weight. Age factor is not considered here because some kids are over or under weight which may create complication in digestion of the medicine. For elders, tablets and capsules are most recommended as they are capable of taking in higher potencies.
Benadryl is recommended to be used as a treatment of nasal allergies, itching and hives. It is also used as an anti-allergy for various allergic reactions.

Caution for Benadryl taking patients

If you are on a dosage of Benadryl, then you have to take care of a few things. You should avoid driving, as Benadryl causes dizziness. Operating machinery or other such hazardous activities must be avoided to avoid accidents because of drowsiness. Alcohol intake may trigger dizziness and drowsiness, so avoid taking any kind of alcohol drinks while you are on Benadryl dosage. In the same way, Benadryl dosage for kids must also be given with great care; kids only on liquid diet must be handled with great care.

Benadryl dosage for kids having allergies less than one year of age

If a kid of less than 1 year of age is going through some allergic reaction, Benadryl is not the right medication. It causes babies to sleep more than they usually do, which can affect the health and growth of babies. There are also no proven benefits of taking Benadryl for colds in any age. According to FDA recommendation, Benadryl is not suitable to treat cold in kids for less than 4 years of age.

Measuring Benadryl dosage for kids

Teaspoons are not a reliable source of measuring the dosage. The best options are droppers and syringes. Sometimes, droppers and syringes come with the packaging of the medicine, but if not, then you can buy one from the nearest medical store. You have to repeat the dosage as per the prescription of your health physician, in other cases you have to repeat the dosage every 6 hours, based on the recovery of your kid. However, for adults a 50mg tablet also has to be repeated every 6 hours, that too based on the progress.

Dosage information of active ingredients in Benadryl

Following are the active ingredients of Benadryl.
• Diphenhydramine hydrochloride
• Injectable solution
• Oral tablet
• Oral capsule
• Disintegration
• Oral disintegration strip
• Compounding powder
• Chewable

Side effects of Benadryl

You have to observe any bodily changes you observe while taking Benadryl. You should discontinue taking Benadryl if you experience:
• Swelling of lips
• Swelling of face
• Disturbed coordination
• Thickening of bronchial secretions
• Epigastric distress
• Sedation
• Hives
• Swelling of tongue
• Difficulty in breathing
• Closing of throat
Report to your doctor immediately, if you observe any of the above mentioned changes in your body. The obvious side effects of Benadryl are:
• Headache
• Dry mouth
• Enlarged prostate
• Difficulty urinating
• Dizziness
• Fatigue
• Sleepiness
These are not the dangerous side effects, as Benadryl relaxes your body while its ingredients work on your antibodies; you may feel dizzy.

Side effects reported by health care professionals

As per the reports of medical health care professionals, there are a few frequently reported side effects due to Benadryl dosage.
Nervous system – nervous system side effects include sedation and depression with drowsiness. Other side effects include mental impairment, rigidity, trismus, swallowing difficulties, torticollis and delirium.
Hypersensitivity – most reported hypersensitivity side effects include pruritus, rash and eczema.
Cardiovascular – these include tachycardia, hypotension and palpitations.
Gastrointestinal – gastrointestinal side effects include dry mouth and nausea.
Ocular side effects – these include diplopia, blurred vision and dry eyes caused by anti-cholinergic effects.
Genitourinary side effects – include dysuria and urinary retention.
Hematologic – hematologic side effects are reported as thrombocytopenia, agranulocytosis and hemolytic anemia.
Ocular and hematologic side effects are reported the least. However, these must be taken care of immediately.

Before taking Benadryl

Your blood should be clean from monoamine oxidase inhibitors; such as, phenelzine, isocarboxazid or tranylcypromine. You should not be taking any of these elements at least 14 days before you start taking Benadryl, because mixing of these elements in your blood can cause serious side effects. So, it is better to tell your doctor if:
• You have glaucoma or increased eye pressure
• You have asthma
• You have stomach ulcer
• You have overactive thyroid
• You suffer from hypertension
• You have a history of heart conditions
• You have experienced enlarged prostate
• You have any bladder problems or other urination problems
If you have any of the above stated problems, then your dosage of Benadryl must be prescribed with great care. You might not be eligible for Benadryl dosage or require a lower dosage as compared to other healthy situations.
Inform your doctor if you are pregnant. However, Benadryl is approved by FDA to be taken by pregnant women, but still your health physician must know about your pregnancy. But, there is nothing to worry about, Benadryl is not harmful for an unborn baby. Newborns are extra sensitive towards anti-histamines, and side effects will rise during breast-feeding. So, it is also important to tell your doctor in case you are nursing your baby.

Taking Benadryl as per prescription

Benadryl intake must be done as exact prescription by the doctor. If you do not understand the prescription given by your health physician, then you must get your confusion clear from your nurse or pharmacist. Benadryl can be taken without or with food.

Time issues while taking Benadryl

If you are suffering from motion sickness, you must take Benadryl 30 minutes before motion; you must take it with meals and at bedtime also. Keep taking it until your problem is solved completely.
Benadryl is also taken as a sleeping pill. In this case, Benadryl must be taken around 30 minutes before bedtime. Take the dosage with the right measuring cup or spoon. Regular spoons are not recommended for taking medicines, which is why you should get a dose-measuring device from your pharmacist.

Maximum amount of Benadryl

Maximum amount of diphenhydramine (basic element of Benadryl) which you can take in 24 hours is 300 mg. The right doctors do not prescribe Benadryl more than your body can take.


Benadryl must be stored at room temperature, and away from heat or moisture. All medicines are not kept that way, some need to be refrigerated, this guidance can only be given by the doctor or sometimes storage criteria is mentioned on the packaging of medicine also.

in case of missing a dose

if you miss a dose due to some reason, then there is nothing to worry about. You can simply take the next dosage as per schedule. However, if you have missed the dosage, and there are more than 4 hours to the next dosage then you can take the missed dosage. In case there are few hours left to the next dosage, then skip and take the next dose on time. Do not take a double dose, until prescribed by the doctor.

In case of over dose

You will observe the side effects of over dose in a few minutes. Visit your doctor or seek emergency medical attention at the nearest hospital. Overdose of Benadryl can cause:
• Weakness
• Dry mouth
• Blurred vision
• Flu
• Swelling of tongue
• Confusion
• Extreme sleepiness
• Fever
• Shaking
• Flushing
• Hallucinations
• Insomnia
In the worst case scenarios, patient might also get seizures. While prescribing Benadryl dosage for kids and adults, doctors must take care of previous health conditions of the patient to avoid complications.