★★★★★
For your sister's neck pain, I learned it might take several days of using it three times per day for significant pain relief to be noticed. I think you mentioned in another post some time ago she had painful stenosis in her neck so yes, that would be tricky to treat.
I have still been having great results using Gallixa on myself and my dogs. I find it to be most effective if applied a few times a day but on some conditions, like dermatitis and dry lips on my elderly dogs, only once or twice a day is enough to make a significant difference.
For my herniated spine, I applied Gallixa to the sore area on my spine and took one enteric-coated aspirin. It was the BEST combo of the many I tried for pain, so I really love this product!!! And it smells a bit like cotton candy to me, very nice.