Mestinon can improve the situation in case of MG but can't cure it…it's like aspirin, it mask the symptoms but doen't adress the causes of the illness.
If you have swallowing problems, you have to eat less but more often in order to sollicitate less your throat muscles, avoid also to speak while eating…and since you eat less, you should absorb more caloric food unless you want to lose weight!
The consistency of the food should also be adapted, use a blender for meat for example or select food which pass more easily: lasagne better than spaghetti, use ketchup or gravy to moisten food, overcook vegetables…
There is also a position to open the throat while you eat: the chin should be at about 2 inches from your chest, try until you find it.
Use a straw to sip small amounts of liquid at a time.
These are some recipes which worked for me.
Good luck,
Maurice.