Can i get a visa to USA if i have a record for drug consumption.? -

It was a case of 0,5 grams of marijuana only. I was released and told to pass the medical exam and then if needed reablitation. There s a question in the US visa questionnaire: if i have ever been arrested. I have to answer yes cos i guess they have a great data and i cannot lie. So, might it be a reason for a visa refusal? what should i do in order to get the visa with this problem?

It might be.You need to get legal advice before you apply for the visa.

There will be nothing you can do if you are refused a visa for this infraction.