I'm glad to have found other people's comments here as I've had the most awful few weeks of symptoms and now I'm beginning to understand why! It's my toothpaste.
I've used various Sensodyne toothpastes for years now and they've given me no apparent problems. However, after drinking a lot of black tea my teeth became stained so at the end of October 2016 I used some Repair and Protect whitening toothpaste to remove the stains and used it on and off during the following weeks. I started to experience sore tongue and had a couple of tongue ulcers soon after but thought nothing of it. Then started to feel very unwell for no apparent reason, dizzy and extremely tired and even breathless - my tongue worsened - it became extremely sore, red and cracked with the central channel down the middle becoming very pronounced and painful.
Eventually had to go to doctors for blood tests as I seriously thought I had something seriously wrong with me, like tongue cancer. Blood tests showed that I had low iron levels so put symptoms down to that as they are very similar so I took action to rectify that. However, even though symptoms improved to some degree I was mystified as to why my tongue, gums and mouth suddenly worsened and it seemed to follow on from using Repair and Protect again a few days ago. My teeth felt like the roots were heavy and aching, my teeth felt weak around the gum line and gums were very inflamed.
Tongue felt ulcerated and I had an intense burning. I had thought that maybe I had some gingivitis so I used some salty water as a mouthwash to try and alleviate the inflammation (as well as some chamomile toothpaste to try and soothe the burning) but both only exacerbated the problem. I used some Sensodyne Pronamel afterwards which calmed things down a bit but taking everything into account, the key factor seems to be when I started to use Repair and Protect a few weeks ago and again more recently. I have suffered so much discomfort and pain I'm never going to risk using it again!
Knowing my own experience and reading further comments here, there surely has to be a problem with it and further investigations should be made. I know someone else who also experienced numb lips and burning after using this toothpaste so to anyone else using R&P - I warn you to be very vigilant about using this product just in case you also have a reaction to it.
Product or Service Mentioned: Sensodyne Repair And Protect Toothpaste.
Reason of review: Bad quality.