The ingredients are almost always on the back of the package,
Everything that contains alcohol (not medicine) or animal parts that has not been slaughtered in a Islamic way is Haram to eat.
If you cannot see it is Haram and are doubting if you should get it but can live without it then don't get it.
It's better to avoid something doubtful.
Regarding alcohol:
" If the alcohol is derived from other than grapes or dates, then there is no problem according to the view of Imam Abu Hanifa, in that it will not be unlawful to use such alcohol (perfumes and medicines made thereof) for medical or other lawful purposes as long as the alcohol does not reach the level of intoxication.... And normally the alcohol used in medicines, perfumes, etc is not extracted from grapes and dates, rather it is derived from seeds, honey, chemicals, petrol, etc... (Takmila Fath al-Mulhim Sharh Sahih Muslim, 3/608)"
Based on this we can say that everything that is not made of grape and not of drinking alcohol (like wine, beer) is allowed.
Using wine as treatment is also not allowed. Because it is rather an disease than a cure, you will get intoxicated.
Also read: http://islamqa.info/en/40530 this has some extra information
Allah knows best,
