Intacin is the trade name for the generic chemical name of diclofenac sodium extended-release capsules, which stops the pain about 30 minutes to an hour after taking the medication. Diclofenac sodium extended-release capsules are a commonly used clinical painkiller. The actual onset of action of this medication is about 30 minutes to an hour after taking the medication, with the best results usually occurring 4 to 7 hours after oral administration. Diclofenac sodium extended-release capsules are also a clinically useful analgesic and anti-inflammatory medication that can treat a wide range of mild to moderate pain symptoms in addition to relieving painful localized inflammation. Whether it is postoperative pain, pain after injury, or pain caused by joint inflammation and soft tissue inflammation, oral diclofenac sodium extended-release capsules analgesic and anti-inflammatory medication can eliminate or relieve pain. It should be noted that its adverse effects are also more common, so it is recommended to take it orally half an hour after meals after excluding contraindications. Diclofenac sodium extended-release capsules should be used under medical supervision, avoid self-medication.