Pain killers which are NSAIDs (nonsteroidal anti-inflammatory drugs) works on the patho-physiological processes that elicit pain, fever and other signs of swelling in the body.

Antibiotics are medicines that help stop infections caused by bacteria. They do this by killing the bacteria or by keeping them from copying themselves or reproducing.

Antiviral drugs are a class of medication used for treating viral infections. Most antivirals target specific viruses, while a broad-spectrum antiviral is effective against a wide range of viruses. Unlike most antibiotics, antiviral drugs do not destroy their target pathogen; instead they inhibit its development.

Antifungal drugs are medications that are used to treat fungal infections. While most fungal infections affect areas such as the skin and nails, some can lead to more serious and potentially life threatening conditions like meningitis or pneumonia.

Antihypertensive drugs are medicines that help lower blood pressure. All antihypertensive agents lower blood pressure, although the mechanisms of action vary greatly.

Antidiabetic drugs are medicines that help control blood sugar levels in people with diabetes mellitus (sugar diabetes).