Drug Identity
Active Ingredient
Aminophylline
Drug Class
Cough Expectorant
Chemical Class
Benzoalkylamine
Pharmacological Group
on the basis of mechanism of action and also cl...
What is Scotsexpectorant?
Uses
Diphenhydramine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of...
How It Works
Chemical Class
Benzoalkylamine
Pharmacological Group
on the basis of mechanism of action and also classified in sedative pharmacological group
Diphenhydramine Hcl is the derivative of Diphenhydramine. It is of Synthetic origin and belongs to Benzoalkylamine. It belongs to H1-antagonist pharmacological group on the basis of mechanism of action and also classified in sedative pharmacological group. The Molecular Weight of Diphenhydramine is 255.40. It is weakly acidic drug, 5.70% solution of the drug is isotonic and Its pKa is 9.0.
How to Take It
1
Adult · PO
25 mg — 8 hourly
Initial, with a double dose at night
2
Adult · PO
50 to 100 mg — 24 hourly
Maintenance
3
Adult
Scraped Dose
Use diphenhydramine exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. Cold or allergy medicine is usually ta
4
Child · Oral
1.25 to 2.5 mg/kg — 8 hourly
Safety Alerts
You should not use diphenhydramine if you are allergic to it
Ask a doctor or pharmacist if it is safe for you to take diphenhydramine if you have other medical conditions, especially: blockage in your digestive tract (stomach or intestines)
bladder obstruction or other urination problems
a colostomy or ileostomy
liver or kidney disease
Important Warnings
When taking diphenhydramine, use caution driving, operating machinery, or performing other hazardous activities
Diphenhydramine may cause dizziness or drowsiness
If you experience dizziness or drowsiness, avoid these activities
Use alcohol cautiously
Alcohol may increase drowsiness and dizziness while taking diphenhydramine
Do not give this medication to a child younger than 2 years old
Always ask a doctor before giving a cough or cold medicine to a child
Death can occur from the misuse of cough and cold medicines in very young children
Side Effects
Get emergency medical help if you have any signs of an allergic reaction to diphenhydramine: hivesdifficult breathingswelling of your facelipstongueor throat. Stop using diphenhydramine and call your doctor at once if you have: pounding heartbeats or fluttering in your chestpainful or difficult urinationlittle or no urinatingconfusionfeeling like you might pass outor tightness in your neck or jawuncontrollable movements of your tongue. Common diphenhydramine side effects may include: dizzinessdrowsinessloss of coordinationdry mouth
Drug Interactions
Ask a doctor or pharmacist before using this medicine if you are also using any other drugs
including prescription and over-the-counter medicines
vitamins
and herbal products. Some medicines can cause unwanted or dangerous effects when used together. Not all possible interactions are listed in this medication guide. Taking this medicine with other drugs that make you sleepy or slow your breathing can worsen these effects. Ask your doctor before taking diphenhydramine with a sleeping pill
narcotic pain medicine
muscle relaxer
or medicine for anxiety
depression
Storage
Elixir Store Below 40°C. Do not Freeze. Protect from Sunlight, Moisture and Heat. Tab, Caps, Cream Store Below 40°C. Protect from Sunlight, Moisture and Heat.
Price Intelligence
Rs 60
Servaid observed price · as of 30 July 2026
No approved ceiling matched to this exact pack and strength.
Prices across sources
ServaidRs 60
Should you consider an alternative?
Other options containing Aminophylline, and what they are not.
These contain this ingredient plus others. They are different medicines — do not swap.
Aminophylline
Rs 33.25Rs 33.25/unit
No DRAP alertsPLIVA PAKISTAN
Phyllocontin
Rs 264.5
No DRAP alertsAGP
Piritonexpectlinct
120ml
+ Chlorpheniramine Containing Expectorants
Rs 39.88
No DRAP alertsGlaxo Smith Kline Pakistan Ltd
Reltusexpect
120ml
+ Chlorpheniramine Containing Expectorants
Rs 56.16
No DRAP alertsPHARMATEC
Brophyld
+ Acefyllin Piperazine
Rs 69.9
No DRAP alertsSTANLEY
Bronocholcough
120ml
+ Chlorpheniramine Containing Expectorants
Rs 78
No DRAP alertsFerozsons Laboratories Limited
Panadol Night
500Mg 25Mg
+ Paracetamol
Rs 109.4Rs 10.94/unit
No DRAP alertsHALEON
Panadolnight
500mg
+ Paracetamol
Rs 115.2
No DRAP alertsHALEON
Ordered by lowest price per unit where a pack size is known, then by price. Order is never affected by sponsorship. Not medical advice — confirm any change with your pharmacist or doctor.
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