Remember, he got poisoned twice. The US Mil got poisoned yesterday, 275, 4 hospitalized, and one dead. Extreme fatigue is one symptom, and it really does not go away, but gets worse in the future.
Cyanide stops the body from converting sugar and proteins into energy in the mitochondria. Fatigue, drowsiness, shortness of breath, are the first signs, later constant muscle pain, motor deterioration, and slight trembling can come on. If that soldier died from cyanide in the stomach, it was a very painful death. I wish I was in charge, I would find out who did it, and experiment and test their tactics on them.