Most Common Side Effects of PhenQ


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phenq side effects

It is normal to be concerned about the possible side effects any supplement can have on you, especially one that you can purchase over the counter. If you’re looking to lose weight, you may have come across the diet pill called PhenQ. While the official website states that the product has a strong safety record with no side effects recorded so far, it is unlikely that such product exists on the planet.

Supplement manufacturers often insist that their pills do not cause any side effects.

For the most part, they state that the use of natural ingredients makes the occurrence of any adverse reaction improbable. However, because of how different genetic makeup and body types are, medications and supplements can cause different reactions.

PhenQ is no different. We’ll look into what you have to know about this diet pill and how to reduce the potential side effects.


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woman with belly ache

The natural ingredients in PhenQ should not cause any adverse side effects. However, because of the transformation taking place in your body (weight loss), you may experience:

  • Digestive issues
  • Nausea
  • Headaches
  • Restlessness

Because we are no scientists, not even medical professionals, we rely on reputable sources such as WebMD to learn more about potential side-effects for individual ingredients used in PhenQ:

  1. Calcium Carbonate can cause some minor side effects such as belching or gas if taken in normal doses (LIKELY SAFE – see more here)
  2. Chromium is usually safe to take daily but some people may experience side effects such as skin irritation, headaches, dizziness, nausea, mood changes and impaired thinking, judgment, and coordination (LIKELY SAFE – read more here)
  3. L-Carnitine can cause side effects such as nausea, vomiting, stomach upset, heartburn, diarrhea, and seizures (LIKELY SAFE – see more here)
  4. Alpha-Lipoic Acid, when taken orally, can cause a rash (POSSIBLY SAFE – see more here)
  5. Cysteine can cause nausea, vomiting, and diarrhea or constipation (rarely, it can cause rashes, fever, headache, drowsiness, low blood pressure, and liver problems) (LIKELY SAFE – see more here)
  6. Nopal can cause side effects such as mild diarrhea, nausea, increased amount and frequency of stool, bloating, and headache (LIKELY SAFE – see more here)
  7. Niacin powder can commonly cause stomach upset, intestinal gas, dizziness, pain in the mouth, and a flushing reaction including burning, tingling, itching, and redness of the face, arms, and chest, as well as headaches (LIKELY SAFE – see more here)
  8. Piperine (also known as black pepper) should be safe and without any side-effects only a burning aftertaste (SAFE – see more here)
  9. Caffeine Anhydrous can cause insomnia, nervousness and restlessness, stomach irritation, nausea and vomiting, increased heart rate and respiration, and other side effects (LIKELY SAFE – see more here)
  10. Capsicum can cause stomach irritation and upset, sweating, flushing, and runny nose (LIKELY SAFE – see more here)

Although most people who take PhenQ report no side effects as the supplement’s ingredients are all natural, we believe that you should be informed also about those side-effects that are highly uncommon or improbable for you to make a well-informed shopping decision.

However, I have to conclude that these mild side-effects are very common among weight loss pills and are easily manageable.


There are some cases when you should not take these pills. These include:

  • People who are under the age of 18
  • Women who are pregnant or breastfeeding
  • If you suffer from diabetes or cancer
  • Have liver or kidney disease
  • Take antidepressants
  • Have endocrine or autoimmune disorders

The makers of PhenQ also warn that you should consult your doctor before taking this supplement if you have any pre-existing medical condition or are taking any medications.


There are some cases when you should not take these pills. These include:

  • People who are under the age of 18
  • Women who are pregnant or breastfeeding
  • If you suffer from diabetes or cancer
  • Have liver or kidney disease
  • Take antidepressants
  • Have endocrine or autoimmune disorders

The makers of PhenQ also warn that you should consult your doctor before taking this supplement if you have any pre-existing medical condition or are taking any medications.

Do you want to try PhenQ pills? These are the best deals offered on the official product website.


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skinny girl

To get the most out of PhenQ and to lose weight safely, you are required to make a lifestyle change. If you’re serious about shedding off the extra pounds, then you’re likely to do whatever it takes to do so and keep the weight off.

Though it’s a weight loss pill, taking it for months or even years and not getting the results you want is an indication that there is something you’re not doing right on your end. Here are some tips to help you lose fat and keep it off.


Eat the recommended amount of proteins, vegetables and fat. That means cutting out processed foods and sugar and sticking to natural and organic foods. Fruits and high fiber foods should also be featured in your diet to get the body you want even faster.

As always, take your time to chew your food. Also, do not starve or fast when taking this diet pill.

Most of the ingredients work by turning fat into energy, namely the α-LACYS RESET®, calcium carbonate, capsimax powder and L-carnitine Fumarate. When you don’t eat, these components will burn energy from your stored fat reserves.

However, you are likely to experience unpleasant side effects when you do so. Low-calorie diets can be problematic as well. Don’t obsess about the calories; PhenQ diet pills will help you burn them. Instead, focus on having nutrient-dense foods.


Preliminary studies indicate that dehydration can cause headaches. Should you experience headaches when taking this diet pill, it could be an indication that you’re dehydrated. However, there is such a thing as drinking too much water; scientific studies show that it reduces the kidney’s ability to function as a natural filter.

Not sure how much to take? Consuming a glass or two before meals and sipping throughout the day or when your body says it’s thirsty, does the trick.


PhenQ has ingredients with thermogenic properties (the α-LACYS RESET®, caffeine, and capsimax powder), that is, the production of heat. Coupled with the other elements that break down carbohydrates and convert them into energy, your workouts are likely to be more fruitful.

The extra energy will help you push harder during your cardio or strength training – the best way to lose weight and tone your body. You don’t have to hit the gym, just make sure you get moving.


PhenQ should be taken twice a day, one pill in the morning and another one at lunch. This direction is due to the caffeine in the supplement. When you take it past 3 pm, it will likely cause sleep disruptions. If you don’t take caffeine, you might experience some side effects as your body becomes accustomed to the pill.

For those consuming coffee, should you encounter jitters, restlessness or lack of sleep that you otherwise didn’t before taking the supplement, you might need to cut back on the coffee; getting a decaf version would be better.

There are many “before & after” pictures with user testimonials available on the official product website.


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microscope research desktop


The answer to the question of whether PhenQ is approved by the Food & Drug Association (FDA) is a little bit more complicated than it may sound in the first place. The official product website states the following:

“Using the highest quality, natural ingredients and prepared in FDA and GMP approved facilities in the US and the UK, PhenQ is the ultimate, all-in-one weight loss pill.”

As you can see, there is a reference to the FDA approval only with regards to manufacturing facilities. This means that facilities making PhenQ (and several other pills as well) have been inspected by the FDA authority to verify if they comply with safe manufacturing practice regulations.

For PhenQ being produced in the FDA approved facilities means that, after inspection, they met the requirements that need to be adhered to produce the diet pills. However, this does not mean that PhenQ is approved by the FDA for any purpose including losing weight at the time of writing this post.

It is crucial for you to remember that according to the official website of the FDA, they do not approve dietary supplements, not even their labels.


Just because PhenQ is not FDA approved does not mean that it’s unsafe. If there were existing complaints after the diet pill hit the market, the FDA would have researched and monitored the supplement and those taking it. For this reason, one can assume that it is safe.

It also has over 190,000 satisfied customers around the world.

The company that produces PhenQ, WOLFSON BERG LIMITED has been running for over a decade and provides supplements to the fitness industry. They state they use 100% effective ingredients for their products and base their formulas on scientific research.

Though the product can be considered safe, if you have underlying health concerns or an illness, you should consult your doctor. They are best placed to let you know if any of the ingredients could potentially affect you.

If you’re on medication, do not take this product before talking to your medical practitioner!

Haven’t you discovered the answer to your question? Try the FAQ section on the official product website or leave your question in the comments section below.


PhenQ in stores mobile

PhenQ in stores

Right now, you can purchase PhenQ supplement safely only from the official product website. The price of one bottle is $69.95, but they offer discounts of almost $70 and $140 when you buy two, respectively three bottles.

SPECIAL DEAL: You can get 2 free PhenQ bottles with a free Advana cleanse right here.

In each container, you’ll find 60 pills and you are directed to take two capsules a day, one in the morning and the other at lunch. That means you need a bottle per month. Payment is possible through American Express, Visa or MasterCard.

Thus far, the company has received a lot of praise from customers.

PhenQ clinical trials on their main ingredient, α-LACYS RESET®, have shown that a person can lose 7.24% body fat, 3.44% of the initial body weight and had a 3.80% muscle mass increase. These results demonstrate that this diet pill works. With no reported cases of side effects, one can safely use PhenQ as part of their weight loss journey.

Overall, we hope to have addressed all your concerns about PhenQ; it proves to be a worthy companion in anyone’s weight loss journey.


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Just a girl obsessed with everything related to weight loss & feeling healthy. Christine is my pen name and I hope you will love the stuff I write. Been researching diets & health since 2013 and my articles helped over 12 000 000 readers to date.Please keep in mind that this site is for informational purposes only and that you always need to consult your decisions with your doctor.