Voltaren Extra Strength gel has 2.32% diclofenac diethylamine (NSAID). It is an anti-inflammatory drug. The double strength works longer than regular strength. It relieves muscle and joint pain by regular application in intervals of 12 hours. https://imeks.lv/index.php?route=journal3/blog/post&journal_blog_category_id=5&journal_blog_post_id=8