minoxidil exposed to temps above 25c

[gavlee]

I recently purchased 3 months supply of regain of internet, however when the stuff got to me it was apparent that the package had been exposed to some significant amount heat during transit. when I opened the first bottle of regain it appeared to have a stronger smell and a yellow tinge to it. The regain i had previously i was clear in colour, so my question is - could the regain being exposed to tempratures above 25c effect the therapeutic efficacy of the drug? if so should i get some more and stop using the current batch? could such a batch have any detramental side effects or just merely be rendered useless?