Systematix Institutional Equities recommends 'sell' on Dr. Reddy's stock after Q3 results.The brokerage expects the new business avenues of Dr. Reddy's to take a few years before contributing profitably.Dr. Reddy's Q3 revenue was inline, but Ebitda and net earnings were lower than expected.Dr. Reddy's SG&A and research spend has increased nearly 50% over the past two years.