Formulation in Pharmacy Practice   2nd Edition

PYRIMETHAMINE
 
 

 
Pyrimethamine is practically insoluble in water, and slightly soluble in alcohol.

Formula

Pyrimethamine Suspension 2mg/mL
 
Pyrimethamine Tablets 25mg 40   
Methylcellulose Solution 1% 250  mL
Syrup BP 250  mL
 
Grind tablets to a powder.  Add a little methylcellulose and syrup to form a paste.  Add to volume.
 
Expiry:  30 days.
 
Stability:  Chemically stable for 91 days.
 
Storage:  Protect from light in airtight containers.  Refrigerate.
 
Shake the bottle
 


REFERENCE
  1. Nahata M.C., Morosco R.S., Hipple H.T.  Stability of pyrimethamine in a liquid dosage formulation stored for three months.  
    Am J Health-Syst Pharm
    1997; 54: 2714-2716.[PubMed Link]

 
Formulation in Pharmacy Practice
2nd Edition