April 18, 2022 4 min read

Chaga has been served as tea for therapeutic use for years, and advancing research only seems to identify even more reasons why Chaga could be a useful addition to your wellness routine.

Understanding Chaga's benefits is only part of the picture, however. You also need to understand any potential side effects of Chaga before deciding if it's right for your own wellness routine. There are some people who should not take Chaga, and other circumstances where you may need to adjust your Chaga dosage when taking it alongside other supplements and medications.

Whatever the case, here's what you need to know about Chaga side effects before you get started:

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Table of Contents
Is Chaga Safe?
What are the Side Effects of Chaga?
Chaga Drug Interaction
Is Chaga Addictive?
Who Shouldn’t Take Chaga?
Chaga Side Effects FAQ

Key Takeaways

  • Chaga side effects are rare and usually mild.
  • You may be at a higher risk for side effects if you have a mushroom allergy or take certain medications.
  • You may also need to be cautious about your Chaga dosage if you have blood sugar or thyroid issues.
  • Most people can take Chaga without any complications, but large doses may cause stomach upset or kidney stress.

Is Chaga Safe?

Chaga mushrooms are used as tea in traditional cuisines around the world and are thought to be safe for most people. Those with a mushroom allergy or who take certain medications may have a higher sensitivity to the effects of Chaga.

In most cases, the benefits of Chaga far outweigh the risks, but there are some rare possible side effects to be aware of.

What are the Side Effects of Chaga Mushrooms?

Based on anecdotal reports and what we know about medicinal mushrooms, side effects may include:

May Lower Blood Sugar

Chaga mushrooms can potentially lower blood sugar, which means it may be unsafe for those with diabetes or prediabetes. Consuming large amounts of Chaga can result in hypoglycemia, a sudden drop in blood sugar. It may also interact with insulin and other medications that impact blood sugar.

May Increase Bleeding

Chaga may decrease blood clotting and thin the blood, which could increase bleeding in the case of an injury. It may be unsafe for those with bleeding disorders or those who take other medications to thin the blood.

Could Cause Kidney Stones

Chaga mushrooms contain a large amount of oxalates that are known to increase the risk of kidney stones. high in oxalates, which can increase the risk of kidney stones. Those who have kidney disease or other kidney issues may need to avoid Chaga. You may also need to avoid Chaga if you are prone to kidney stones.

Lowering Your Blood Pressure

In some cases, medicinal mushrooms could lower your blood pressure.

Allergic Reaction

Although it is rare, some people experience a mushroom allergy. Symptoms of an allergic reaction to Chaga may include:

  • Swelling of the lips, mouth, and airways
  • Difficulty breathing
  • Skin rashes or hives
  • Runny nose
  • Watery eyes
  • Nausea and vomiting
  • Stomach cramping
  • Bloating
  • Loose stools

Interactions With Other Supplements or Medications

In some cases, medicinal mushrooms like Chaga may interact with certain OTC and prescription medications, which could reduce their efficiency. We'll discuss this more below.

Chaga mushroom and tea made from steeping the dried mushroom

Chaga Drug Interactions

To be transparent, there isn't much evidence regarding the potential side effects of Chaga when combined with other medications or substances. Still, experts believe that it may interacts with certain groups of medications, including:

  • Antidepressants
  • Anti-anxiety medications
  • Thyroid medications
  • Blood pressure medications
  • Diabetes medications

You should discuss Chaga with your doctor before starting a dosage routine if you already take one or more prescription medications daily. In many cases, Chaga is safe to take, but your dosage and dosing routine must be altered. Work with your doctor to pay attention to any Chaga side effects when combining it with other supplements and medications.

Is Chaga Addictive?

Nope! Chaga does not directly impact the body's hormone release in the same manner as many habit-forming pharmaceuticals. It's not addictive and has little to no potential for substance abuse or dependency.

Who Shouldn’t Take Chaga?

In most cases, Chaga can be taken safely without any complications, but there are a few people who may need to make special considerations when taking Chaga. Talk to your doctor before taking Chaga if you:


  • Have a bleeding disorder
  • Are diabetics
  • Have an immune system disorder
  • Are expecting surgery in the next two weeks
  • Have a thyroid disorder
  • Take blood pressure medication
  • Are pregnant or breastfeeding

Chaga Side Effects FAQ

Can you take Chaga everyday?

Yes, Chaga can be taken daily, which may be the best way to reap its optimal therapeutic benefits. It may take up to two weeks of regular Chaga doses to feel the full effects of your new dosing routine.

Can chaga damage kidneys?

Chaga mushroom contains a high oxalate content that could potentially have a negative impact on your kidneys. Chaga may not be safe for anyone with pre-existing kidney conditions or who is prone to kidney stones.

What does chaga do to your body?

Chaga is believed to have various therapeutic effects that help soothe inflammation and boost immune functions, but more evidence is needed to understand these benefits.

What happens if you drink too much chaga?

Chaga is rich in natural minerals and fiber, which can be great for the body in moderate doses. At high doses, overconsumption of these minerals and fibers can lead to stress on the kidneys and upset stomach. Large amounts of Chaga may have laxative-like effects. Most sources suggest that you should take no more than 2-3 cups of Chaga tea per day.


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