Espresso shots, cream, and sugar used to be the only options to add to your coffee cup. Then came flavored syrups and pumpkin spice. Now, thanks to the video-sharing platform TikTok and wellness influencers, an array of new and supposedly better-for-you options have been added to the coffee bar. “Coffee is no longer just a liquid vehicle for delivering caffeine,” explains Vincent Pedre, MD, the medical director of Pedre Integrative Health in New York City and author of Happy Gut. To enhance the already well-established perks of a cup of joe, people are mixing in powders, spices, and superfoods to “elevate the health-promoting effects of each last drop,” Dr. Pedre says. Some do it because they believe these add-ins offer allow them to achieve different health goals, from better skin to a slimmer waistline, he says. Of course, most of these DIY health hacks have not been vetted by experts, nor do they have evidence-based research to back them up. So we asked nutrition pros to give their honest feedback about which are a good idea, which are harmless, and which you should you avoid, and ranked them accordingly. Here's how they stack up, best to worst.