Guinea pig almost about to die.... :(?

i have two guinea pigs around 8 months of age (or smaller ) and both were really running around and hungry 24X7 eating cucumbers and tomatoes and one day one of them were just sitting in the corner and not moving much 2 hours later he couldn't move and i was worried called a vet he didn't knw anything (its india vets here suck ) so i wastold that it could be poisoning so igave it some polybion or something and within muinets got back to his feet similar thing happened again 2 days later i gave it water with a dropper and he was running faster than ever.. shouting and playing and eating and then today at 6 i saw him sluggishly moving around so i gave him water ..(water is always available in the cage) so i gave him water and went for my interview... 2 hours later i came back home and he was on his side not moving at all i picked him up gave him polybion and lots of water.. the other guy is running around no problem its the same guy everytime and now its 12:47 .. heis healt has substantially deteriorated .. gasping for air no eye reflexes since the last 1 hour had something i would call a series of fits ... :( i had to watch every minute of it)... no vets available here in this piece of **** place.... i just wish he died quick.. he has suffered so much already..... is this sometype of heart attack or a stroke ?