| Term 
 | Definition 
 
        | Interferes with bacterial folic acid synthesis.    SMZ: inhibits dihydrofolic acid formation from para-aminobenzoic acid 
 TMP: inhibits dihydrofoilc acid reduction to tetrahydrofolate.  |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Sulfamethoxazole and trimethoprim (Bactrim, Septra)    |  | 
        |  | 
        
        | Term 
 
        | What is the single strength (SS) and double strength (DS) doses? |  | Definition 
 
        | SS: 400 mg SMZ/80 mg TMP DS: 800 mg SMZ/ 160 mg TMP |  | 
        |  | 
        
        | Term 
 
        | What is the ration of SMZ to TMP for Septra? |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | What are some contraindications for sulfonamides? |  | Definition 
 
        | Sufla Allergy Pregnancy (at term) Anemia due to folate deficiency |  | 
        |  | 
        
        | Term 
 
        | Bactrim suspension should be stored at what temperature? |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | Sulfonamides are moderate inhibitors of what? |  | Definition 
 
        | 2C8/9; therefore caution when administering with warfarin |  | 
        |  | 
        
        | Term 
 
        | sulfonamides may increase levels of sulfonylureas & phenytoin |  | Definition 
 | 
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