Medication info

Sendifen Plaster (Diclofenac Sodium)

OTC medicationPatch
Ingredient · strength
Diclofenac Sodium›70mg / 1 sheet
Manufacturer / importer
신일제약(주)
Appearance
A colorless to transparent or pale yellow adhesive substance applied to a substrate covered with a solid coating for transdermal use.
Packaging
10 sheets/pack, 40 sheets/carton [(10 sheets * 4 packs)]
Approval status
Active

MFDS item code 202503128 · Notified 2025.12.01

Summary

Main use
Pain relief for osteoarthritis and shoulder periarthritis.
Who uses it
Adults
Adult dosage
1 sheet per dose, apply 1 to 2 times daily to the affected area.

Ingredients

Manufacturer
신일제약(주)

Efficacy & effects

Pain relief for osteoarthritis and shoulder periarthritis.

  • Osteoarthritis
  • shoulder periarthritis
  • tendon and tenosynovitis
  • paratendinitis
  • elbow pain
  • myalgia
  • swelling following trauma
  • pain
View approved original text

This medication is used for osteoarthritis, shoulder periarthritis, tendonitis, tenosynovitis, elbow pain (tennis elbow), myalgia, and swelling and pain following trauma.

Dosage and Administration

Adult dosage

1 sheet per dose, apply 1 to 2 times daily to the affected area.

Precautions

This medication should not be used in certain cases. For instance, individuals with allergies to this medication or its components, those who have asthma or a history of asthma when taking aspirin or other non-steroidal anti-inflammatory drugs should not use this medication. Additionally, patients under 18 years old, pregnant women more than 5 months along, breastfeeding women, and those with peptic ulcer disease should not use this medication. When using this medication, do not use other diclofenac formulations or non-steroidal anti-inflammatory drugs concomitantly. This medication should not be used continuously for more than 7 days and should not be applied to areas with wounds, infections, burns, or to the eyes or mucous membranes. Furthermore, do not use occlusive dressings without the doctor's instructions. Patients with asthma, those currently undergoing other treatments, pregnant or breastfeeding women, and the elderly should consult a doctor or pharmacist before using this medication. In particular, during the third trimester of pregnancy, this medication may affect delivery, and in the first and second trimesters, it should be used only at the minimal dosage and duration if necessary. It is recommended that breastfeeding mothers avoid using this medication, as it may be transferred into breast milk. Elderly individuals have a higher risk of cardiovascular, gastrointestinal, and kidney adverse reactions when using this medication, hence caution is required. If skin redness, rashes, itching, swelling, or blisters occur while using this medication, discontinue use immediately and consult a doctor or pharmacist. Rarely, allergic reactions or asthma attacks may occur, so any unusual symptoms should be reported to a healthcare professional immediately. This medication helps relieve symptoms like pain and swelling but is not a treatment for the underlying disease. If taking diuretics or antihypertensive medications along with this medication, kidney function should be closely monitored as it may affect it. Furthermore, this medication may increase the risk of gastrointestinal bleeding or ulcers, so when used with drugs affecting blood coagulation, symptoms of bleeding should be monitored carefully. Lastly, store this medication out of reach of children, protect it from direct sunlight, and keep it in a cool, dry place. To maintain product quality, do not transfer to another container.

Side effects and when to seek care immediately

Serious side effects

  • Hives, severe swelling (angioedema), chest tightness
  • Difficulty breathing, asthma attacks
  • Severe allergic reactions
  • Severe rash with fever, blisters, skin peeling, pain in mouth/eye mucous membranes (Stevens-Johnson syndrome, toxic epidermal necrolysis)
  • Shortness of breath or difficulty breathing
  • Yellowing of the skin or eyes (jaundice)
  • Severe general malaise
  • Sudden and severe headache, thunderclap headache, seizures, confusion, visual disturbances

Mild side effects

  • Skin rash, itching, swelling, skin dryness, irritation, occasional dermatitis, skin reddening, red spots, pain, roughness, pigmentation, photosensitivity
  • Gastrointestinal bleeding, ulcers, perforation
  • Possible increase in blood pressure
  • Possible aggravation of kidney function
  • Headache

Not everyone experiences these, and they can vary from person to person.

Storage

This medication is sensitive to light, so it should be stored in a light-protective container, ideally at room temperature between 1 and 30 degrees Celsius. Storing it this way can help maintain its efficacy for a longer period.

Appearance and packaging

Appearance

A colorless to transparent or pale yellow adhesive substance applied to a substrate covered with a solid coating for transdermal use.

Package unit

10 sheets/pack, 40 sheets/carton [(10 sheets * 4 packs)]

Same-ingredient medicines

Even with the same ingredient, strength, dosage form and how it is taken can differ.

Even with the same ingredient, the dose and directions can differ by strength and dosage form. Talk to a doctor or pharmacist before switching from a medication you are already taking.

Questions about this medicine

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For anything that needs medical judgment, consult a doctor or pharmacist.

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This drug information is based on data provided by the Korea Ministry of Food and Drug Safety.
Consult a doctor or pharmacist for accurate dosage, administration, and usage instructions.