Does heat damage dutasteride??

Hi, does dutasteride Avodart in gel capsules spoil easily because of the heat? Here where I live it gets almost 40 degrees Celsius in the summer, I put the fan pointed at the pills to reduce the heat, but I made a 14-month stock of dutasteride, the last boxes will last more than one summer before I use them, would it be better to throw some boxes away and buy more little by little? Is there a problem with stockpiling dutasteride?