Cellucor C4 Extreme is a superb stimulant that helps in boosting the metabolism of an individual and offers extra energy. Available as powdered supplement, it is used for burning fats by elevating the caloric burning effect. Although its usefulness and effectiveness is unquestionable, it does present health risks for some users. Since some health supplements have ingredients which cause or trigger health issues, it is important to assess their safety before making the decision to use them.

In fact, you will not even need these supplements if you exercise regularly, take a balanced diet and take appropriate rest. The following are some well-known C4 Extreme side effects some users had experienced.

Possible C4 Extreme Side Effects

1

Allergy

Supplements like Cellucor C4 Extreme have been known to cause allergic reactions. The reason for this is the ingredients in such supplements are usually common allergens.

2

Headache

Headaches are among the common C4 extreme side effects. The reason for the headaches is the presence of ingredients in it which cause stress on the body. This stress usually is responsible for the headaches.

3

Vomiting and Nausea

Vomiting usually occurs when the stomach becomes irritated because of the ingredients present in the supplement. The rejection of the health supplement by the stomach results in vomiting and the unpleasant feeling of nausea and causes further complications like undernourishment and dehydration.

4

Tingling of Skin

Tingling of skin is a skin reaction which may occur if you are using C4 extreme. Although the reason for this remains unknown, it is believed that the ingredients responsible for boosting the metabolism are behind this side effect.

5

Tunnel Vision

Tunnel vision is one of the serious C4 extreme side effects. Ingredients present in C4 extreme are harmful for the peripheral vision of an individual. Loss of peripheral vision is not something to be taken lightly and it becomes necessary to immediately consult a doctor if the symptoms do not go away after a few days.

6

Others

The following is a list of some other C4 Extreme dangers some users experienced:

  • ŸDiarrhea

  • ŸNervousness

  • ŸPalpitations

  • ŸShaking

  • ŸRestlessness

  • Lack of sleep

C4 Extreme Ingredients

The Technical Data page of Cellucor C4 Extreme contains all the information about the ingredients that have been used in the making of the product. However, the descriptions of the ingredients given are biased and too short.
1

Synephrine

Research reveals that the possible reason behind the shaking and itching caused by C4 Extreme use is because of the ingredient Synephrine HCI.

Cellucor on the other hand claims that "Synephrine is a powerful adrenergic stimulator which enhances synthesis of ATP and the energy levels of the users. It is structurally similar to Ephedra but is much milder than it. The compound helps in speeding up thermogenesis, fat burning and metabolism, promoting weight loss while at the same time increases adrenaline stimulation."

Synephrine is actually a derivative extracted from plants which is present in a number of dietary supplements that are marketed towards people who are either looking for performance enhancement or weight loss. Synephrine has a number of side effects which include high blood pressure, heart attack and uncommon cardiac issues and even sudden death.

2

Creatine

Creatine is also claimed to be one of the ingredients present in C4 Extreme. Pileup of additional calories is one of the most well known side effects of this chemical. It enhances muscle energy and causes the body to gain weight at an unhealthy pace. 

Kidney problems are also among the side effects of creatine. Consistent use of this chemical can result in the transformation of kidney stones into ulcers. Individuals consuming extra amounts of creatine haven been known to suffer from other kidney complications too. Creatine enhances the reproducible rate of tumor cells and also causes problems like nausea and stomach cramps too.

So Still Considering C4 Extreme?

Doing proper research and taking caution in using any kind of health supplement is very important. Make sure to ask experts regarding the side effects of the supplement and the effects it might have on your body before using it. You should consult a physician before making use of C4 extreme if you are a patient of nephritic problems.

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  • Javibeats_miamiOct.28 20:05
    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!!!
  • Stephanie WrightOct.26 13:43
    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.
  • LibbyAug.25 04:10
    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.
  • Good point Aug.6 06:06
    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.
  • FrankJul.27 11:40
    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.
  • khaledJun.1 21:54
    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.
  • khaledJun.1 21:53
    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.
  • Nate JohnsonMay.23 17:00
    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.
  • That's some bsJan.12 00:45
    Don't trust what the author has said about creatine. Completely misinterpreted.
  • ColtonJan.20 00:48
    @ : I wouldn't say completely. The added mass is simply water weight but it can be taxing on the kidney.
  • gym ratMay.25 03:16
    @ : Creatine is one of the most researched supplements in the market. It has been shown time and again that for a healthy individual creatine isn't harmful at all for the kidneys. If there is no underlying kidney disease creatine doesn't change anything if taken within the normal threshold. Before giving creatine a bad rap the author should have read some research articles available in pubmed on creatine and its side effects on healthy individuals.The claims made in the write up above has no citation of any peer reviewed research. It seems its the author's opinion more than reality.
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