It may not be right for you, but I had a doctor in the past give me FLECTOR patches. It's kind of like ibuprofen in a stick on patch (it's not ibu, but same kind of drug) that's the same type and size as the Lidoderm. Because you stick it right on the place that needs it, the med goes right in, and it doesn't affect other medicines you are taking by mouth. Lately, someone gave me VOLTAREN GEL. Same med as voltaren, but again, you smear it right on the part that hurts, so the systemic effects are minimal and it doesn't interfere with other stuff you are taking. Neither are the same as lidoderm patches (which I've also had), but they do work pretty good in their own way. Might help a bit during that other 12 hours? Wish I had more to offer you.