Razor blades is an apt description. My throat/swallowing pain got progressively worse during 6 weeks of treatments (took only extra strength Tylenol weeks 5 and 6) but the pain really kicked in after I had my last radiation treatment and for almost exactly 2 weeks thereafter.

I asked my doc for pain meds when this awful pain began and got prescriptions for Gabapentin and another for a mix of hydrocodone and Tylenol. I took every dose as prescribed for about 2 weeks. Really worked for pain management.

I am now another week past that and pain has subsided and swallowing much more smooth.

I have been gargling with the baking soda/salt mix at least, at least, 4 times a day since the first day of radiation.

I received a prescription for the Magic Mouthwash at about 4 weeks but never used it because it only offers very short term relief.

I continue to do all the exercises that I was given and will continue to do them into the future for my throat /swallowing. Was your husband given exercises to do on a daily basis?
I understand it is very important to do them not only for short term but to mitigate or even eliminate recurrence of side effects in the long term.

Worst side effect I have is a complete absence of any ability to taste, anything. Most liquids and solid foods taste like tin, metal or horse’s hooves. This makes it difficult for me to have an appetite. Largely subsisting on carnation instant breakfast, ensure, yogurt, saturated cereals. Having enough of these to stop weight loss at 25 pounds (began at 205 pounds).