I agree with Hector, no problem...
"Proper storage of ribavirin capsules:
Store ribavirin capsules at 77 degrees F (25 degrees C). Brief storage at temperatures between 59 and 86 degrees F (15 and 30 degrees C) is permitted. Store away from heat, moisture, and light. Do not store in the bathroom. Keep ribavirin capsules out of the reach of children and away from pets.
http://www.drugs.com/cdi/ribavirin-capsules.html
This might be a question for your pharmacists. I guess you have a nother dose for now to replace it and we can sort possible replacement later
No worries.
It should be fine the Ribavirin label says up to 86 F.
I doubt that the pills even got that hot in 15 minutes.
Hector