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Common Side Effects of Juicing

Side Effects of JuicingWhether you go on a complete juice fast or simply introduce fresh juice into your diet, you may have side effects of juicing, or detox symptoms.

These are also called the Herxheimer Reaction.

These symptoms occur as your body adjusts to the new diet and gets rid of toxins.

Below are possible symptoms you may experience while juicing. If the symptoms are severe or go on for a long time, be sure to see a doctor.

Side Effects of Juicing


Headaches are also common withdrawal symptoms of cutting out caffeine. They should go away after a while. If severe, introduce a small amount of caffeine back into your diet (such as half a cup a day) and gradually eliminate.


As you introduce your body to something you’ve never had before (ie; lots of nutrient-dense juice), you may feel nausea in the beginning. You may even end up vomiting! Yes, nausea is one of the common juicing side effects especially for beginners.

Tips on Avoiding Nausea When Drinking Fresh Juice

  • Avoid or limit leafy dark greens and beets in the beginning
  • Make sure you are well hydrated before and after drinking the juice
  • Make sure your juice has enough water content from vegetables such as cucumber, celery and zucchini
  • If your juice is very concentrated, add some purified or spring water
  • Drink your juice very slowly
  • Make sure to make mild juices. Initially, greens and other strong vegetables such as beets should not be more than 25% of your juice. Usually mild juices are tasty juices.
  • When just starting, start with Beginner juices and slowly migrate to Intermediate and Advanced juices. Greens are good for you but they are also very concentrated and intense, so go easy on them.

What to Do If You Feel Nauseous

  • Drink lots of water
  • Try drinking peppermint tea or hot water with a piece of ginger
  • Avoid dark greens, beets and any other vegetable with an intense taste
  • If you can’t drink juice, drink coconut water until you can drink juice again


Drink plenty of water. Try taking psyllium husk powder. It is an excellent fiber source and good for your colon. In severe cases, trying taking magnesium supplements.


Drink plenty of water and drink coconut water to supplement your electrolytes. It should improve after a while. However if it continues for a long time, it could be that your body is not able to handle certain vegetables/fruits. Switch your vegetables/fruits around to determine if a certain vegetable or fruit is causing your diarrhea. Also try reducing the fruit content.

Back pain

Back pain is also a common withdrawal symptom of cutting out caffeine.
If severe, introduce a small amount of caffeine back into your diet (such as half a cup a day) and gradually eliminate.


It should go away after a while.

Flu-like symptoms

You may experience flu-like symptoms that will keep you in bed for a day or two. Drink plenty of water and sleep well. Drink coconut water to supplement your electrolytes.

Coated/furry tongue

It should improve after a while.

Side Effects of Juicing Sick Pet

Bad breath

It should improve after a while.

Skin eruptions/rashes

It should go away after a while.


Make sure you are drinking enough juice if you are on a juice fast along with lots of water. It should go away after a while.

Muscle aches/leg cramps

Muscle aches and cramps are also one of the side effects of juicing, and it should improve after a while. Make sure to drink lots of water and also drink coconut water for the electrolytes. If it is severe and continues, you may want to try taking magnesium and/or multi-vitamin supplements.

Feeling cold

You may feel cold in the beginning as you start to drink juice, especially if the weather outside is cold. Drink lots of hot water or caffeine-free herbal tea. Also try moving your body and doing light exercise. After a while you should not be feeling cold.

Or you may be feeling very cold due to an underactive thyroid (hypothyroidism) made worse by drinking certain vegetable juice. If you suspect that you may have an underactive thyroid (hypothyroidism), make sure to avoid juicing cruciferous vegetables and certain fruits that slow down the thyroid (called “goitrogenic foods”). Common goitrogenic foods are listed below:

  • Bok choy
  • Broccoli
  • Broccolini
  • Brussels sprouts
  • Cabbage
  • Cauliflower
  • Collards
  • Daikon
  • Kale
  • Kohlrabi
  • Mustard greens
  • Peaches
  • Radishes
  • Red Radish
  • Rutabaga
  • Spinach
  • Strawberries
  • Turnips
  • Watercress