Fertilizer symptoms and conditions

I mentioned this a few weeks ago and have found the source of my comments. It is in Peter D'Adamo's book "Eat Right For Your Blood Type". The reason I found this interesting is because my dad had a terrible reaction to Levaquin and was curious about his blood type after reading that AB and B blood types should avoid fluoroquinolones. Dad passed away in March, but ascertained his blood type from mom's, mine, and brother. I am O, brother AB, and mom type A. Dad, therefore had to be B. Food for thought.
Dad had ulnar nerve damage, loss of appetite, shortness of breath, insomnia, pain in calves and shoulders,etc. Succumbed suddenly from rare b-cell lymphoma in lungs, which just appeared out of nowhere while in hospital for Levaquin reaction. Mom unfortunately took Levaquin last month. Then suddenly is now dying from Anaplastic Thyroid Cancer. Is this all a coincidence? Is this stuff fertilizer for cancer?

I finished a 5 day course of 1000 mg a day over a month ago. About a week afterward, I started having sharp pinging pains in the "bend" areas of where my colon is. Painful gas and bowel movements, and blood in the bowl. (not in stool) Also have had gum pain and mouth ulcers. My intestines feel blistered. I'll be ok a couple of days when eliminating, then suddenly a bowel movement will be followed by bright red blood and tissue. Very scary. I am taking Acidophilus, trying to eat carefully and drink only water, nothing harsh or citrusy. I have pain on the left side of my gut mostly. Under ribs, at waist and very low left side. I'm afraid, but then, this is a harsh drug and I do not have fever, have not dropped weight, lost appetite, or felt weak. I just feel like my insides are shredding and ulcerated. I will NEVER take this again. It's odd, because I have taken it before, for much long than this. I refused to take the last 2 doses the former time, because it literally tasted like fertilizer smells when i would belch after a pill. Vicious drug. I am watching myself and my issues, and hoping I don't have to have further treatment and that I have not totally ruined my colon beyond repair.

I'm posting for my father as he's not into computers. He went to the hospital for COPD - emphysema and he was on Prednisone for 10 days that he was there followed by 3 weeks of tapering it off. I didn't listen to his complaints and now I feel bad, it seems that his blurred vision and teeth and gum pain are serious, and a couple of his teeth have basically fallen out. Does anyone know if the vision problems were permanent? Obviously it's too late for his teeth...