SILPHEN - diphenhydramine hydrochloride syrup 
Silarx Pharmaceutical, Inc

Disclaimer: Most OTC drugs are not reviewed and approved by FDA, however they may be marketed if they comply with applicable regulations and policies. FDA has not evaluated whether this product complies.


Silphen Cough Syrup

Active Ingredient: Diphenhydramine hydrochloride 12.5 mg (in each 5 mL(teaspoonful)(TSP))

Purpose: Antitussive


temporarily relieves coughs due to cold or bronchial irritation


Do not use with any other product containing diphenhydramine, even one used on skin

Ask a doctor before use if you have

Stop use and ask a doctor

if symptoms last for more than 1 week or recurred or accompanied by fever, rash, headache

Ask a doctor or pharmacist before use

if you are  taking tranquilizers or sedatives

When using this product

If pregnant or breast-feeding

Keep out of reach of children.

Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.


Do not take more than six doses

Adults and children over 12 years
2 teaspoonfuls (TSP) every 4 hours
children under 12 years

Other information

Inactive ingredients:

Alcohol 5%, ammonium chloride, citric acid, D&C red no. 33, FD&C red no. 40, menthol, methylparaben, propylene glycol, propylparaben, sodium citrate, strawberry flavor, sucrose, water

Questions: 888-974-5279

Manufactured by:

Sliarx Pharmaceutical, Inc
1033 Stoneleigh Ave.
Carmel, NY 10512 USA.


diphenhydramine hydrochloride syrup
Product Information
Product TypeHUMAN OTC DRUG LABELItem Code (Source)NDC:54838-154
Route of AdministrationORALDEA Schedule    
Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
Diphenhydramine hydrochloride (Diphenhydramine) Diphenhydramine hydrochloride12.5 mg  in 5 mL
Inactive Ingredients
Ingredient NameStrength
ammonium chloride 
anhydrous citric acid 
D&C red no. 33 
FD&C red no. 40 
propylene glycol 
sodium citrate 
Product Characteristics
Color    Score    
FlavorSTRAWBERRY (Strawberry Flavor) Imprint Code
#Item CodePackage DescriptionMarketing Start DateMarketing End Date
1NDC:54838-154-40118 mL in 1 BOTTLE, PLASTIC
2NDC:54838-154-70237 mL in 1 BOTTLE, PLASTIC
3NDC:54838-154-80473 mL in 1 BOTTLE, PLASTIC
Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
OTC monograph finalpart34112/03/1993
Labeler - Silarx Pharmaceutical, Inc (161630033)

Revised: 6/2014
Document Id: 32730640-56e1-4c59-8058-c2ef8ed64e61
Set id: d18e22f2-8cda-4862-b437-e83648a5108a
Version: 17
Effective Time: 20140627
Silarx Pharmaceutical, Inc