“ ‘[Tea and coffee] are what the Lord meant when He said “hot drinks” ’ ” (Joseph Smith, as quoted by Joel H. Johnson, A Voice from the Mountains [Salt Lake City: Juvenile Instructor Office, 1881], p. 12). There are people who think the issue is over caffeine. That is not the issue. In the Revelation, it never says anything about caffeine, nor has the Church of Jesus Christ of Latter Day Saints ever said anything "Doctrinally" about caffeine. Here is what was published in a church magazine by a church authority: (H. Burke Peterson, “Q&A: Questions and Answers,” New Era, Oct. 1975, 36–37) "Two of the tests we can employ as we question the use of any food or beverage are: Is it wholesome? Is it prudent? As we know, some of us need more rest than others. These same principles imply that we should not tax our bodies beyond good judgment. Finally, remember that the Lord has counseled: 
 
“For behold, it is not meet that I should command in all things; for he that is compelled in all things, the same is a slothful and not a wise servant; wherefore he receiveth no reward.” (D&C 58:26.) 
 
We know that cola drinks contain the drug caffeine. We know caffeine is not wholesome nor prudent for the use of our bodies. It is only sound judgment to conclude that cola drinks and any others that contain caffeine or other harmful ingredients should not be used." 
 
Sound judgement. It's also sound judgement not to hit your thumb with a hammer. Not a Commandment. You won't be kept from heaven cuz you drink your Mountain Dew.  
 
Yes, Herbal teas are okay. “And again, verily I say unto you, all wholesome herbs God hath ordained for the constitution, nature, and use of man—  
 
“Every herb in the season thereof, and every fruit in the season thereof; all these to be used with prudence and thanksgiving.”