Q:

How do you calculate drug dosages accurately?

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Quick Answer

To calculate the optimal dosage of a drug, individuals need to take into account the patient's age, weight, sex, ethnicity, organ health and history of smoking, as Drugs.com explains. The correct dosage of any medication gives the maximum desired effect while keeping side effects to a minimum.

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Full Answer

There are multiple factors that all need to be considered when calculating drug dosages, according to Drugs.com. The dosage is the amount of the drug given each time the drug is administered, and it can be measured by weight, volume, number of capsules, number of inhalations of an aerosol or in other forms. Total daily dosage should be taken into account when determining the dosage, which means the frequency that the drug is administered should also be determined.

Additionally, the strength of the drug needs to be considered. For patients, dosage instructions are always written on the pharmacy label. For over-the-counter medications, manufacturers and distributors often include them on the packaging or on inserts that come with the medication, as Drugs.com indicates. When prescribing medications, doctors and other medical professionals need to consider any possible interactions with other drugs. This means that they need to take a patient's medical history, other medications, drug qualities and total daily dosage into account.

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