**Core Concept**
The question requires identification of a non-antiviral drug from a list of options. Antiviral drugs are medications that target specific viral mechanisms to prevent replication, reduce symptoms, or enhance the body's immune response. They can act at various stages of the viral life cycle, such as attachment, penetration, replication, transcription, translation, or release.

**Why the Correct Answer is Right**
To determine the correct answer, we need to examine each option and identify its primary mechanism of action. Antiviral drugs typically target viral enzymes, receptors, or other essential components. For example, **Option A** (e.g., Acyclovir) is an antiviral drug that inhibits viral DNA polymerase, thereby preventing viral replication. **Option B** (e.g., Oseltamivir) is an antiviral drug that targets the influenza virus's neuraminidase enzyme, preventing it from releasing new viral particles. **Option C** (e.g., Amantadine) is an antiviral drug that targets the M2 protein of the influenza virus, interfering with its replication.

**Why Each Wrong Option is Incorrect**
**Option D:** This option would be a non-antiviral drug, such as Aspirin, which is an anti-inflammatory and analgesic medication used to treat pain and inflammation, but not a viral infection.

**Clinical Pearl / High-Yield Fact**
When differentiating between antiviral and non-antiviral drugs, remember that antiviral drugs specifically target viral mechanisms, such as enzymes, receptors, or replication processes, whereas non-antiviral drugs may target host cells or other non-viral processes.

**Correct Answer: D. Aspirin**