What Are the Side Effects of Mushroom Supplements?

What Are the Side Effects of Mushroom Supplements?

Although mushroom supplements popularity has skyrocketed in recent years, the benefits of these medical marvels have been known about for thousands of years. There’s no denying that the results you see from using a mushroom supplement are highly impressive, but it is important to remain mindful of the side effects that can occur. This is something we will be exploring further today, so stick around if you wanted to find out what are the side effects of mushroom supplements.

This next part will be a quick recap of what the different mushroom extracts are and how they can work in supplement form. If you’re confident about this, you can skip to the next part.

There are seven different types of medical mushrooms found in various supplements.

  • Lion’s Mane
  • Reishi
  • Cordyceps
  • Chaga
  • Turkey Tails
  • Shiitake
  • Maitake

A potent blend of these powerhouse ingredients will deliver impressive health benefits, such as.

  • Supporting the function and development of the brain and cognition
  • Increasing energy levels and stamina for physical performance
  • Supporting and maintaining the nervous system
  • Improving the immune system
  • Providing quicker response for any inflammation in different areas of the body
  • Using extracts that are packed full of antioxidants

All of these and many more benefits are delivered with a daily intake of mushroom supplement. The use of medical mushrooms in powder form is important as it isn’t recommended to eat these types of mushrooms raw or whole.

When looking for the right mushroom supplement always look at the ingredients list. This will give you a clearer idea of which mushroom types are included in the blend and avoid any products that contain large amounts of bulking or filling agents.

Is it safe to mushroom supplements?

Yes and no, mushroom supplements are considered safe for you as they do not include the psychedelic variety of mushroom, they also contain natural extracts of the beneficial medical mushrooms I have already mentioned. The only hurdle we’ll encounter is the sheer volume of different mushroom types, 10,000 to be exact. Because of this, many experts avoid making claims that all mushroom supplements are safe as it is very difficult to guarantee, there is also some research demonstrating an increased risk of developing allergic reactions and liver damage. Therefore, I would strongly suggest you consult with a doctor to ensure the product you choose will deliver the best results and will benefit you and your body.

Why is mushroom bad for you?

Mushrooms are a popular and well-loved ingredient often found in a vast variety of dishes. The only concern surrounding mushrooms, is the risk of eating the wrong kind. This risk is considerably higher if you choose to forage for mushrooms, even if you have full confidence, and expert to guide you, or mobile apps to help, there is always a slight risk of picking the wrong kind. Never pick and consume a mushroom you find when out and about as the chances are this type of fungi should not be consumed by humans.

Having said that, shopping for edible mushrooms in your supermarket will alleviate any concern with consuming a dangerous type of fungi. And as for mushroom supplements, these often contain a mixture of medical mushrooms for their health benefits and culinary mushrooms for their flavour. These blends have been developed for human consumption in safe and regulated environments limiting the risk of negative side effects and reactions. Having said that I would still suggest you consult with a doctor about using a mushroom supplement, especially if you are new to taking mushroom powders.

Can mushroom supplements have side effects?

Yes, they can, although the blend would contain natural extracts and beneficial ingredients, there is still a chance of unwanted side effects. These can vary depending on the type of mushroom in the product.

Lion’s Mane

Considered safe to consume and recommended to have a daily dose of 1 gram up to 16 weeks before having a break for a week or two. Possible side effects could include mild stomach-ache and discomfort, as well as mild irritation to the skin.

Reishi Mushroom

With its bitter taste, the reishi mushroom cannot be consumed raw or whole. However, it is one of the most beneficial fungi to support the immune system. Should only be taken for a maximum of 16 weeks before having a brief break. Possible side effects can be dizziness, dry mouth, itching, nausea, rash, and upset stomach.


This fungus is unique due to the fact it lives in certain types of caterpillars found in the mountains of China. With its multiple benefits of supporting the immune system, combating cancerous cells, as well as treating many more concerns. It is understood that cordyceps can be taken in doses of 3-6 grams for up to 1 year. You may experience some mild side effects, such as diarrhoea, stomach-ache, and constipation.


Known for being the one mushroom containing the highest number of antioxidants. The main concern with using chaga is the fact it can interfere with blood-thinning medication and those suffering with diabetes. Another side effect to be mindful of is those currently suffering or have suffered from kidney disease, with chaga increasing the chances of developing kidney stones.

Turkey Tail

Thought to be well tolerated by most adults and those currently receiving chemotherapy are prescribed turkey tail to help with the treatment and any discomfort felt. Some experience vomiting, nausea, liver problems and low count in white blood cells. 


One of the few mushroom types that full into the edible and medical categories. Highly beneficial to help stimulating the immune system and helping to ward off signs of the common cold and flu symptoms. If eaten once it was cooked there should be no side effects, when consumed in dried powder form there is the risk of suffering from stomach discomfort, breathing problems, and swelling of the skin.

These are some examples of the side effects you can experience when taking a mushroom supplement. Therefore, I suggest again you consult with a doctor or medical professional before anything new into your diet or daily routine. If you have any further questions, you can find us on Instagram for more.