We do not advise taking probiotics with a hot drink as the heat could have a negative impact on the bacterial cultures. However it is fine to take your probiotics with a cold drink and then have a hot drink a few minutes after. By the time tea / coffee is cool enough to drink it is close enough to the body temperature that your probiotics will be subjected to anyway. If you wish to wait 15 minutes between taking your probiotics and having a hot drink this is fine and would definitely be safe.