A lot of herbs can be toxic and dangerous when they are not used properly. A small mistake, like failing to research before harvesting or misidentifying the herb, can lead to serious side effects like nausea and vomiting, seizures, heart rhythm disturbances, liver failure, kidney failure and more.

There are many herbal remedies that can help with a variety of common ailments but it’s important to know how to use them without putting yourself at risk. We’re going over 10 mistakes you need to avoid if you want your healing herbs to be safe like sfsag com.

1. Parsley or celery seed – 

The leaves of parsley and celery are used rather than the roots or seeds. Parsley can be toxic when consumed in large doses and is certainly purgative. The leaves contain a chemical that prevents the body from absorbing iodine, which can lead to goiters. Celery contains psoralens, which are photosensitizing agents that means it causes an allergic reaction when you’re exposed to the sun. Atopic dermatitis, also known as eczema, is often triggered by sunlight so it’s best to use this herb at night before you go to bed.

2. Cloves – 

Even though they are very potent, a few cloves of garlic will not kill you. The majority of the compound responsible for the health benefits of garlic is allicin, which is only created when the bulb or clove is crushed. The seeds of the clove tree are poisonous and can cause nausea, vomiting and hallucinations when eaten in large doses. It’s best used to treat toothaches and other gum problems. It can also be used to treat digestive issues like diarrhea, stomach cramps and indigestion.

3. Dandelion – 

Dandelions contain an alkaloid called safrole, which can cause nausea, vomiting and in extreme cases, death. This alkaloid is created by the germination of the plant and is very similar to the compound that causes death in wine. This herb is best known for its immense appetite-quenching properties but it’s actually quite poisonous as well. It contains a dangerous chemical that can cause symptoms like vomiting, abdominal pain and diarrhea so it should be avoided during pregnancy or whenever you feel nauseated or have loose stools.

4. Valerian – 

Valerian root is used to treat insomnia and anxiety. It’s best known for its sedative effects but if consumed in large doses it can cause a wide range of symptoms including numbness, tingling sensations and nausea. You should avoid this herb when pregnant or if you have a history of heart or lung issues.

5. Yerba Maté – 

This herb is best known as a tea and it’s commonly used to keep you awake when you’re feeling sleepy or sluggish. However, it can also cause alcohol poisoning if consumed in large quantities. You might be familiar with yerba mate as an herbal tea drink but it’s actually quite dangerous if consumed in large quantities. It contains caffeine and theobromine which can cause heart palpitations, irregular heartbeat, high blood pressure and vomiting among other side effects.

6. Pennyroyal – 

Pennyroyal is known for its ability to induce menstruation so it can be used by women who are trying to trigger their periods. It is toxic in large doses and can cause muscle aches, headaches, sweating and vomiting. It’s very dangerous if ingested by pregnant women so you should avoid using this herb altogether.

7. Eleuthero – 

The roots of the Siberian ginseng plant are frequently used in Eastern medicine but they’re incredibly toxic when consumed in large amounts. They can cause nausea, vomiting, fever, liver damage, kidney failure and death in some cases. You should only use this herb when prescribed by a licensed health professional.

8. Catnip – 

Catnip is a common herb used in treating digestive issues like gas, nausea, stomach aches and indigestion. It’s actually quite toxic and can cause symptoms like an upset stomach, bloating, vomiting and more. You shouldn’t use this herb if you’re pregnant or breastfeeding so you should be careful when handling it.

9. Yohimbe – 

Yohimbe bark is commonly used to treat erectile dysfunction but it’s actually quite dangerous. It contains yohimbine which can cause headaches, palpitations, chest pain and irregular heart rhythms in susceptible individuals. You should stay away from yohimbe supplements and products if you’re significantly overweight or on any medication that can interact with it.

10. Nutmeg – 

Nutmeg is used to treat nausea but this herb contains myristicin and safrole, which can lead to respiratory issues like coughing, vomiting, wheezing and more. It’s best used for treating nausea during pregnancy but it should be avoided during infancy or when you have a history of asthma, congestive heart failure or kidney disease.


It’s important to know how to use your herbs safely and effectively. The side effects of these 10 herbs can be very serious so you shouldn’t take any chances. Don’t underestimate the herbs and make sure you know how to use them properly before trying a new one. If you have a reaction or experience any unusual symptoms, discontinue use and seek immediate medical attention.

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