Mumbai, June 30 -- Doctors at Cooper hospital suspect a sudden drop in blood pressure levels could be the cause of Shefali Jariwala's unexpected death on Friday night. Police have ruled out any foul play in the matter and are awaiting the post-mortem report for further clarity. The actor collapsed at her residence on Friday night after which, her husband rushed her to Bellevue Multispeciality hospital where doctors declared her dead. Preliminary findings suggested that she might have suffered a cardiac arrest. Her body was later shifted to R N Cooper hospital, Juhu, for post-mortem. The police found boxes containing anti-ageing tablets, skin glow tablets and vitamin tablets at her house. The actor's family said that she had been taking the tablets without doctor's consultation but it never caused problem to her, said a police officer....