Aceclofenac tablets (100mg and 200mg) are non-steroidal anti-inflammatory drugs (NSAIDs) indicated for pain relief in conditions like osteoarthritis and rheumatoid arthritis. Patients should be cautious of potential side effects, including gastrointestinal issues, and use the lowest effective dose for the shortest duration possible, particularly in the elderly or those with concurrent health conditions. Contraindications include hypersensitivity to the drug, active peptic ulcer, and certain cardiovascular conditions, and careful monitoring is required when used with other medications.