Don't trust what the author has said about creatine. Completely misinterpreted.

Wouldn't trust the article at all, multiple ingredients and their effects are incorrectly stated. I believe it is Beta Alaniene (if I remember correctly) that causes the tingling and shaking and it is completely harmless, you can take 10x the amount that's in C4 daily and it is completely harmless, furthermore this guy is against Ceatine so clearly he is 100% going to be against C4, yet Creatine is the most studied workout supplement in existence so that's quite funny tbh. Article is very biased against C4, only thing wrong with C4 is its massively overpriced vs making it yourself but really who the fuck would do that, plus I get a discount anyway.

this articule is GREAT you guys please read side effects of of creatine and how dangerous it is to your kidney... Several pre-workouts have even been banned because they contained substances known to increase the risk of heart attacks, bleeding of the brain, and even death. In 2014, an untested stimulant (DMBA) was found in at least a dozen dietary supplements. FYI: DMBA is a substance with a similar chemical makeup of DMAA, which is banned by the F.D.A. (in 2013) because it was found to lead to heart attacks. In April 2015, DMBA was eventually banned.

this articule is GREAT you guys please read side effects of of creatine and how dangerous it is to your kidney... Several pre-workouts have even been banned because they contained substances known to increase the risk of heart attacks, bleeding of the brain, and even death. In 2014, an untested stimulant (DMBA) was found in at least a dozen dietary supplements. FYI: DMBA is a substance with a similar chemical makeup of DMAA, which is banned by the F.D.A. (in 2013) because it was found to lead to heart attacks. In April 2015, DMBA was eventually banned.

I had a near death experience because of this C4 supplement. Brain bleed and depression, anxiety, and panic attack for over 2 years. Do your research about the supplements. The FDA doesn't do their job properly to control them. And don't let the ads fool you. Try to stay natural: eat properly, rest well, and have good exercises programs with a lot of variety.

I'm never buying this product again. The body shakes, tingles the nausea and WORST of all severe diarrhea that would completely dehydrate you that you would need electrolytes so you could function. I took exactly as prescribed and even under the recommended dose and even after that, I stopped using it immediately the diarrhea still continues even though I've taken Extra strength Imodium and a good quality yogurt with probiotics during the day. And it still continued for 5 days. I kept the receipt and returning the products for a complete refund the products is unsafe and the diarrea is rated a 10, it was so bad it was tar like paste and it wouldn't stop and my samples had to be sent it for examination to a laboratory. Worst period in my life.

never buy this product my bp so high as soon as I drink it. This product can kill you. I have to take Benadryl for itchy all over my body.

FYI Synephrine HCL, also known as bitter orange, is chemically similar to Ephedra. It’s claimed to have the same benefits as Ephedra, but without the risks that caused it to be banned. Beta Alanine is the ingredient that causes the tingly feeling and its purpose is to slow the buildup of lactic acid increasing muscular endurance. Every drug/supplement on the market has side effects, some that out weigh the benefits, but all will affect people differently. I have used C4 Extreme for over 2 years now and the worst of my side effects is the tingly feeling and bloated feeling. I do know that it has helped me stay focused & motivated while at the gym so I really have no complaints. People should always question what they read on the internet.

Experienced lately itchy ears hands and face unconfortable after using c4 preworkout!!! I'm concerned as it's uncomfortable I hope I don't get it in my asshole I would be in the emergency room!!!