bengay-type analgesics

[aubieRx]

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Do these actually cause any real changes in the muscles/joints that help soreness or does it just create a sensation that overwhelms the pain?


I've always wondered if and how they really work.

 

[AngryRPh]

If I recall correctly, they (menthol and pepper based ointments and creams) are just counter-irritants that affect the nerves closer to the top of the skin, therby "distracting" them from the pain signals being given off deeper in the joints or muscles. I think, however, that long-term use of the topical pepper products has some pain benefit...but I can't remember for sure.

 

[WilkesRx]

Yup, you're right. Capzaicin has substance P in it, which comes from peppers and is effective for pain.

 

[haphu3b]

just to clarify, capsaicin which is from chili peppers and the active ingredient in Zostrix relieves pain by inhibiting substance P... as opposed to containing it, it's a chemical found in nerve endings which is involved in transmitting pain signals... and yes, most topical analgesics do act as counter-irritants

 

[SomeGuy]

If I'm not mistaken (I'm not going to check google, check it yourself), many pain patches/ointments/creams are topical salicyclates (ie: aspirin through the skin).

 

[aubieRx]

ah. so the menthol never actually affects blood flow to an area?

 

[AngryRPh]

ah. so the menthol never actually affects blood flow to an area?

Well, menthol constricts blood vessels, which gives that "cool" feeling.

 

[Trancelucent1]

If I'm not mistaken (I'm not going to check google, check it yourself), many pain patches/ointments/creams are topical salicyclates (ie: aspirin through the skin).

That is true. Not long ago, I was using Flexall and it says on the box that it contains aspirin and not to use if you cannot use aspirin. I think it's a combination of the menthol (to cool and restrict bv) and the aspirin to alleviate the pain at the source.