for (Drug it : drugs) {
    for (String it_two : it.doses_info) {
	   String[] temp = it_two.split("\t");
	          if (temp[0].contains(it.getname())) {
		      System.out.println(temp[0] + " " + it.getname());
              }
       }
}

temp[0] list:

Niaspan-2000
Niaspan_Lipitor-10/500
Niaspan_Lipitor-10/1000

it.getname() list:

Niaspan
Niaspan_Lipitor