trimming characters up to colon
<p>i have a json replay string and the data in that is some what like this </p>

<pre><code>NSString *s = responseDrugInfo.genericname;
NSCharacterSet *doNotWant = [NSCharacterSet characterSetWithCharactersInString:@":"];
s = [[s componentsSeparatedByCharactersInSet: doNotWant] componentsJoinedByString: @""];
NSLog(@"%@", s); 

"genName":"METFORMIN",
   "mtr":" TEVA",
   "comUse":" This medicine is a biguanide-type medicine used along with a diet and exercise     program to control high blood sugar in patients with type 2 diabetes."
</code></pre>

<p>and i just want to display the data in a lable like this</p>

<p>METFORMIN
TEVA
This medicine is a biguanide-type medicine used along with a diet and exercise program to control high blood sugar in patients with type 2 diabetes.</p>

<p>and using the following code i am able to replace the colon symblo ...</p>

<p>can any one please tell me how to trim the string up to the colon ie how to remove "genName":
 in advance....</p>
