Why can't I use moist heat with other pain relief creams, ointments, liniments and patches?

Most pain relieving creams and ointments available in drug stores contain menthol, camphor, capsaicin and/or methyl salicylates as active ingredients. These are counter-irritants that work by covering or masking the pain. Heat applied to these ingredients can result in serious chemical burns. Always read warning labels on topical pain relievers before use.

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