Before administering the drug it is necessary to use the multiple control system. This is when you order entry, barcode and technology checks. The best method for this is to use the manual redundancy system and the “5 rights and 3 controls” method. Information on the drug label is also needed. The drug, form and dosage listed on the drug label are required. You should also check medication administration records. The trade name is the brand name and the generic name is the official brand name. A drug label includes the dose unit method that is important for administering the drug. Ratios are a way of comparing the parts of a whole to each other. Proportions are methods of expressing equality between two ratios. They are often used to find unknown quantities. The first and last terms of the proportion are called extremes while the second and third terms are called means. A solute is a substance dissolved in a solvent. solutions are made using a solid and a liquid or a liquid and a liquid. Drug labels are important sources of information. Looking at a drug's label can tell you the correct information about the dosage, unit dose, brand name, generic name, and strength. Parental must be in liquid form before being administered. They are available in three forms. They can be in disposable syringes or cartridges, vials and ampoules, or in dry form. Parental and parental medications may be based on the patient's weight. Many times dosages will be expressed in kilograms rather than pounds. The first step in calculating dosages based on dimensional analysis is to find the unit of measurement to calculate. Then you should write the identified unit to calculate followed by an equal sign. The last step is to write the dosage... in the center of the paper... other reactions to expect and reactions to report. Nurses should decide what knowledge the patient lacks and then plan an educational session that directly addresses a specific area of ​​need. Vague discomfort or apprehension manifesting in varying degrees from expressions of concern about the drug regimen to total lack of compliance with the medication decreases with understanding of the medication regimen. Evaluation is the decision-making process that involves determining the effectiveness of nursing interventions in achieving expected outcomes. The assessment can be used to decide whether the patient or a family member understands the drug regimen. The assessment is also used to evaluate patients' response to therapy. Nurses should check the patient's or family's understanding of the medication regimen, noting whether one or both appears to understand the material presented.