My 25 year old son suffered from some food poison which caused some
severe abdominal pains. He also felt numbness in his testacles. He was
admitted at the hospital and was diagnosed as suffering from gastro
viral interitis. I want to know if that is curable and what medicine
is good/best for the treatment?

Hi maameservaa-ga,

Here is the information that you seek.

http://www.cdc.gov/ncidod/dvrd/revb/gastro/faq.htm
What is viral gastroenteritis? 
Gastroenteritis means inflammation of the stomach and small and large
intestines. Viral gastroenteritis is an infection caused by a variety
of viruses that results in vomiting or diarrhea. It is often called
the "stomach flu," although it is not caused by the influenza viruses.

How is viral gastroenteritis treated?
The most important of treating viral gastroenteritis in children and
adults is to prevent severe loss of fluids (dehydration). This
treatment should begin at home. Your physician may give you specific
instructions about what kinds of fluid to give. CDC recommends that
families with infants and young children keep a supply of oral
rehydration solution (ORS) at home at all times and use the solution
when diarrhea first occurs in the child. ORS is available at
pharmacies without a prescription. Follow the written directions on
the ORS package, and use clean or boiled water. Medications, including
antibiotics (which have no effect on viruses) and other treatments,
should be avoided unless specifically recommended by a physician.

Viral Gastroenteritis
http://web.uct.ac.za/depts/mmi/jmoodie/gastro2.html

These websites also have the treatment included.
Viral gastroenteritis
http://www.nlm.nih.gov/medlineplus/ency/article/000252.htm
http://www.merck.com/pubs/mmanual/section3/chapter28/28f.htm
http://vm.cfsan.fda.gov/~mow/chap35.html
http://www.germology.com/gastroenteritis.htm
http://www.in.gov/isdh/healthinfo/viralgastroqfacts.htm
http://www.pennhealth.com/ency/article/000252.htm



Treatment
http://www.nlm.nih.gov/medlineplus/ency/article/000252.htm#Treatment


Hope this helps.

Best regards.


jeanwil-ga