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| Attribute | Aspirin | Diclofenac |
|---|---|---|
| Simple | Painkiller and blood thinner. | Strong anti-inflammatory painkiller. |
| Drug class | NSAID and antiplatelet agent (acetylsalicylic acid). | NSAID commonly used for musculoskeletal pain. |
| Prescription | OTC | Rx only |
| Uses | Pain, Fever, Heart attack prevention, Stroke prevention | Arthritis, Back pain, Sports injury |
| Forms | Tablet, Chewable tablet, Enteric-coated tablet | Tablet, Gel, Injection, Suppository |
| Adult dosage | 300–600 mg every 4–6 hours for pain; 75–100 mg daily for heart protection. | 50 mg 2–3 times a day. |
| Pregnancy | Avoid in 3rd trimester | Ask your doctor |
| Common side effects | Stomach upset, Heartburn | Stomach upset, Dizziness |