drug therapy
Meaning of drug therapy: The formal name for treating illness with medicines, whatever the route and whatever the outcome being sought.
Definition of drug therapy
Drug therapy is the use of medicines to prevent, control or treat a disease, or to relieve its symptoms. It covers every route by which a medicine can reach the body, from tablets and injections to inhalers, patches, drops and creams. The phrase is used in records and in research to distinguish treatment with medicines from surgery, radiation and other approaches.
What routes does it cover?
| Route | Example | Why it is chosen |
|---|---|---|
| By mouth | Tablets, capsules, liquids | Simplest, suits long-term use |
| Into a vein | Infusions and injections | Fast, and bypasses the gut |
| Inhaled | Asthma and lung medicines | Delivers directly where it is needed |
| Through the skin | Patches and gels | Steady release over hours or days |
| Applied locally | Eye drops, creams, suppositories | Limits effects to one site |
What is it trying to achieve?
Four aims cover most of it. Cure, where the treatment removes the cause outright, as an antibiotic does with a bacterial infection. Control, where the disease persists and the medicine holds it in check, as with high blood pressure or epilepsy. Replacement, where the body no longer makes enough of something and the medicine supplies it, as with thyroid hormone or insulin. Relief, where the underlying condition is untouched but the symptom is eased, which is the basis of pain management and much of palliative care. A single medicine can serve more than one of these at different stages.
How does it sit alongside other treatments?
Medicine is one option among several, and many conditions are managed with a combination. Surgery removes or repairs. Radiation therapy destroys tissue in a defined area. Physical treatments restore movement and strength. Drug therapy differs from all of these in that it acts throughout the body wherever the blood carries it, which is both its advantage in disease that is widespread and the reason its unwanted effects appear in organs far from the problem.
What determines whether it works?
Beyond the medicine itself, the dose, the interval between doses, how the body absorbs and clears it, interactions with other medicines, and whether it is actually taken as prescribed all shape the result. Pharmacology treats these as part of the therapy rather than as afterthoughts.
Also known as
Used in a sentence
The record noted that drug therapy alone had controlled the condition for several years.
Good to know
The phrase describes treatment with medicines by any route, and it is used to distinguish that approach from surgery, radiation and physical treatment rather than to name a particular drug class.
Word origin
Where “drug therapy” comes from
Therapy comes from the Greek therapeia, meaning healing or attendance on the sick.