Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Tried and true

Back in 2000 I went to my primary care with the worse headache I had ever had. I had a "self diagnosed" brain tumor :). My doctor examine my ears, nose and my sinuses and told me to purchase NasalCrom and use as directed. I looked at him as if he had lost his brains and he said, "your ears are congested". So I purchased it from the first drug store that I passed and began to use it right away. The next day my "brain tumor" had resolved and I was a happy camper. Ptior to this I had used the inhaler "Intal" for since about '77 and it controlled my asthma which was allergy related. However, I did not know it was sold over the counter in a nasal spray. Since then I totally rely on this medication especilly since the aerosol inhaler is no longer available. It helps all my laalergy symptoms including the asthma. I recommend it every chance I get.