Side effects of Diclofenac

You should not use Voltaren (Diclofenac) if you have a history of allergic reaction to aspirin or NSAIDs (non-steroidal anti-inflammatory drugs).

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Voltaren may also cause stomach or intestinal bleeding, which can be fatal. These adverse reactions can occur without warning in older adults.

Seek emergency medical help if you have any signs of an allergic reaction to Voltaren (Diclofenac) including sneezing, runny or stuffy nose; wheezing or difficulty breathing; urticaria; swelling of the face, lips, tongue, or throat.

Seek emergency medical help if you have signs of a heart attack or stroke: chest pain that extends to the jaw or shoulder, sudden numbness or weakness on one side of the body, difficulty speaking, difficult breathing.

Stop using Voltaren (Diclofenac) and call your doctor right away if you have:
  • The signs of any rash, no matter how small;
  • Difficulty breathing (even slight);
  • Swelling or rapid weight gain;
  • Signs of bleeding in the stomach – bloody or tarry stools, coughing up blood or vomiting that looks like ground coffee;
  • Liver problems: nausea, upper stomach pain, itching, feeling tired, flu-like symptoms, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
  • Kidney problems: little or no urination, pain or difficulty urinating, swelling in the feet or ankles, feeling tired or short of breath;
  • High blood pressure – a severe headache, pounding in the neck or ears, nosebleed, anxiety, confusion;
  • Red blood cells (anemia) – pale skin, feeling light-headed or short of breath, fast heartbeat, difficulty concentrating;
  • Severe skin reaction – fever, sore throat, swelling of the face or tongue, burning of the eyes, skin pain followed by a red or purple rash that spreads (especially to the front or upper body), blistering and peeling.
Voltaren’s common side effects may include:
  • Indigestion, gas, stomach pain, nausea, vomiting;
  • Diarrhea, constipation;
  • Headache, dizziness, drowsiness;
  • Nasal congestion;
  • Itching, increased sweating;
  • Increased blood pressure; or
  • Swelling or pain in the arms or legs.

It is not a complete list of side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


Richard Richard avatar

I used Voltaren pills repeatedly because of back pain. As a result of the pinch of the sciatic nerve, the pain was from the back to the right leg. After taking the pill, the pains gradually went away, but you should use Voltaren as rarely as possible due to its reaction to the gastrointestinal tract. So I would recommend it along with medications such as Omeprazole for less trouble with the stomach. The drug itself helps well and does not cause addiction or any hallucinogenic effects or euphoria. In general, I advise you to take it with strong pain in the back as a result of pinching of the nerve in the spine or other pains of the back.

Laura Laura avatar

I have been rescued by Voltaren every time, since other drugs do not help. I was born with two fused cervical vertebrae, they compress the nerve endings, which often causes pain and numbness. Once every three months I go through the Voltaren course, the drug relieves symptoms almost completely. The only drawback for me – very tired and constantly want to sleep when I go through the course. There were no other side effects occurred.