I don't think any energy drinks are safe. They're mostly caffeine and sugar. Better to find healthy ways to get more energy.
Is Loco Energy Drink Safe for Health?
Thats the energy drink with alcohol so uou go crazy and get drunk. Not a good idea
1 can of Four Loko (24 oz.) = 4 beers or 4 shots of vodka or 4 glasses of red wine or a strong cup of coffee.
In 2005, the entrepreneurial team designed a prototype "energy beer" now known as Four Loko. Marketed as a "premium malt beverage" in cherry and berry flavors, the drink contained taurine,guarana, caffeine and wormwood, the supposed psychoactive ingredient of absinthe.
I went to their website, and I couldn't find the list of ingredients anywhere. I find that worrisome. If it is like most energy drinks it is full of sugar and caffeine, neither of which are heathy.
Doesn't Loco mean mad?
Here's a link
http://www.caffeineinformer.com/go-loco-energy-drink
I'd look at each and every ingredient if you want to know the effects, however this will not account for how they interact with each other. I know of quite a few people who are addicted to these drinks and as a result have problems with hyperactivity and insomnia. Here's a link for Taurine
http://www.globalhealingcenter.com/natural-health/dangers-of-taurine/