Hello doctor .I have been suffering from winter asthma for 5 years. It comes only in winter .doctor gave me romilast 10 and theo asthalin tablets .first few years I had been taking those medicines when attack came. But I heard that it's good to take inhaler than medicine pills. So I am taking normal inhaler asthalin. But its not working good .if I spray 4 times then it works but last for only 4 to 6 hours .please suggest me a steroid inhaler thanks.