  DECLARE @Id INT;
    SELECT @Id = id
    FROM sysobjects
    WHERE name = 'TblUMDrugHavaleh'
IF NOT EXISTS     (        SELECT *        FROM syscolumns         WHERE id = @Id    AND name = 'FreeInstruction' )

        ALTER TABLE TblUMDrugHavaleh ADD FreeInstruction NVARCHAR(200) NULL;
IF NOT EXISTS     (        SELECT * FROM syscolumns   WHERE id = @Id   AND name = 'TypeOfPrescriptionInstructions' )
        ALTER TABLE TblUMDrugHavaleh  ADD TypeOfPrescriptionInstructions TINYINT NULL;
IF NOT EXISTS     (        SELECT * FROM syscolumns         WHERE id = @Id   AND name = 'TypeOfPrescription' )
        ALTER TABLE TblUMDrugHavaleh ADD TypeOfPrescription TINYINT NULL;
IF NOT EXISTS     (        SELECT * FROM syscolumns         WHERE id = @Id   AND name = 'HowToUse' )
        Alter  Table TblUMDrugHavaleh Add  HowToUse NVARCHAR(200) NULL
IF  EXISTS     (        SELECT * FROM syscolumns         WHERE id = @Id   AND name = 'use_code' )
        Alter Table TblUMDrugHavaleh  ALTER COLUMN use_code VARCHAR(9)
IF  EXISTS     (        SELECT * FROM syscolumns         WHERE id = @Id   AND name = 'Mind_code' )
        Alter Table TblUMDrugHavaleh  ALTER COLUMN Mind_code VARCHAR(9)