This pain relief cream has over 19,000 five-star reviews on Amazon

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Whether it's your back, neck or feet, waking up with muscle pain or any physical discomfort is not easy. It can come unexpectedly and have a crippling effect on your life. But now, you can help alleviate some of that pain and discomfort with the Penetrex Pain Relief Therapy.

With nearly 19,800 five star reviews, the Penetrex Pain Relief Therapy is considered one the most effective pain relief treatments by thousands of Amazon shoppers. You can apply it to your aching hands, feet, neck, back or any other part of your body experiencing pain, numbness, tingling or discomfort.

Shop: Penetrex Pain Relief Therapy, $18.95

In addition, it works well with other therapy treatments. According to the product description, it's safe to use with healing pads, ice packs, arthritis gloves, and several other therapy products. At the same time, you can apply the product directly to the sore area and it's effective on its own.

So what makes it such a powerful pain relief solution for so many?

It might have something to do with its pain-targeting formula. As mentioned in the product description, Penetrex doesn't "simply mask pain." Instead, it focuses on treating inflammation, which is described here as the "root cause of pain."

And for those worried about the consistency of the product? It boasts that it's non-greasy, non-staining and paraben-free.

One buyer pointed out how they use it to treat a variety of muscle issues.

"I've been using Penetrex for 2 years now to treat my inflammation, arthritis and degenerative meniscus in my knee. It works great, it works quickly and I love the smell. The swelling disappeared in 5 days. It will always be party of my medicine pantry. When I first used it, I had to use it often and all day long, and before I knew it that lessened and now I use it at the onset and maybe once to twice a day but that's not everyday. I also used it after my laminectomy and residual nerve pain, it truly helped, this stuff is amazing!"

Another reviewer compared the results to that of Biofreeze.

"I have to say for someone who has been struggling with back pain for over 10 years this product was like sent from heaven. I suffer from sciatica due to bad disc in lower back. Therapy can only do so much and it’s a never ending pain. I ordered this on here and I have to say whenever I get a back pain I rub it on the sore area while massaging with my fingers and letting the cream soak into the skin. It surely provides an instant relief for me. It works better then biofreeze and other pain relief balms. Also you only need a little bit to apply and it works!!"