REGEX-Escape for: http://sildenafilnoednorx.com/buy/kamagra-sildenafil.html - sildenafil citrate tablets 100 mg

Your Input:
Result, the escaped string:
http\:\/\/sildenafilnoednorx\.com\/buy\/kamagra\-sildenafil\.html \- sildenafil citrate tablets 100 mg

What must the escaping look like for:
http://sildenafilnoednorx.com/buy/kamagra-sildenafil.html - sildenafil citrate tablets 100 mg

The excaped text for use in a regex is:
http\:\/\/sildenafilnoednorx\.com\/buy\/kamagra\-sildenafil\.html \- sildenafil citrate tablets 100 mg