Can You Drink Too Much Herbal Tea? Read Our Recommendations

Can you drink too much herbal tea? This is a good question. Many people would say that we can drink as much herbal teas as we want. The main concern that people have is caffeine in teas but herbal tea doesn’t have it. Drinking herbal teas has a limit, want to know why?

Herbs are medicinal plants that contain active substances. They impact on our organs and health. We could say they act as a medicine but they are weaker. Our nature has some powerful plants that can have an effect on us. Learn about some herbal teas that you shouldn’t drink too much.

Differ from Fruit & Herb Teas and Medicinal Teas

You should know which tea you are drinking – fruit or herbal. Although fruit and herbal teas are generally safe for most people who do not have special health problems and limitations, they should drink them moderately.

Consumption of large quantities of fruit teas can bring irritation of the gastric acid because of the fruit acids. The same applies for herbal teas. With excessive consumption of herbal teas you may consume such doses of herb substances which already have therapeutic or adverse effects. Many medicinal plants are in fact also used for herbal teas and medicinal teas. So it is important that you know which herbs are in your tea.

Can You Drink Too Much Herbal Tea?

In the next section I will show you some herbal teas that you should drink occasionally or in small dosages.


Can you drink too much herbal teaIt is a medicinal plant with laxative effect, which must not be used for longer than a week or two. The longer usage may increase the gut inertia problems and constipation may even worse.

We need to increase doses when we get used to it. It will disrupt the electrolyte balance in the body and you could have also other problems.


Drinking nettle tea can irritate the stomach, causing a burning sensation on skin and swelling. It also reduces the secretion of water in sensitive people.

Leaves can be very irritating due to the presence of acetylcholine and histamine. It should not be used in edema or water stagnation as a result of weakened heart and kidney reduced ability to function.

nettle herbal teaRegarding known pharmacological activity, excessive use of nettle tea interferes with drugs against diabetes and increased or decreased blood pressure.

It increases the effect of tranquilizers because of the inhibitory effect on the central nervous system. It can have an irritant effect on the stomach and small intestine.

According to folk tradition, it can affect the menstrual cycle and cause abortion. Excessive consumption of nettle tea can effect on uterine activity. It shouldn’t be used during pregnancy. You should be careful with excessive drinking of nettle tea when you are breast-feeding. When rinsing the urinary tract you should drink a lot of water.

St. John’s Wort

St. John's WortTea containing St. John’s wort can reduce the concentration of other drugs in the blood, which are used simultaneously. It means that it can reduce drug functioning.

It increases the decomposition of other drugs in the body because it increases the level of important metabolic enzymes and transporting proteins. This may last even two weeks after consuming St. John’s wort tea.

It will have an effect on drugs that are metabolized by the liver enzyme system (various antiviral drugs, digoxin for treating heart failure, theophylline for treating asthma, chronic bronchitis, simvastatin to lower blood fats and other). It can reduce the effect of taking birth control.

Hypericin in St. John’s Wort is able to initiate the phototoxic reaction, so sunbathing or irradiation with UV rays isn’t recommended.


rosemary herbal teaAlthough rosemary has many health benefits, it is not recommendable to overdo with its consumption. People with high blood pressure, taking blood medicines or epilepsy should be the most careful.

Drinking too much of rosemary tea can cause inflammation of the stomach or intestinal mucosa and kidney dysfunction. Diabetics and those with heart failure should be careful also.


You should be careful with hawthorn because it has an effect on the number of drugs (including drug for heart, blood pressure, cholesterol and blood). It can change a dose of the existing drug that you are taking. Consult with your doctor or pharmacist before taking this herb.Hawthorn herbal tea

Clinical studies reported occasional adverse side effects of hawthorn, but these are mild and transient in nature. These can be digestion problems, headache, dizziness, drowsiness and heart palpitations.

When they occur, consult with a medical expert. Hawthorn tea can be taken only under expert supervision if you are pregnant or breast-feeding.


Valerian herbal teaValerian should not be used during pregnancy and lactation. Do not use it if you are taking drugs such as amitriptyline diazepam. You can increase the effects of hypnotics or medicines that regulate mood.

Irritation, headache, or insomnia can be side effects of taking valerian in inappropriate combinations of drugs.


Chamomile can cause allergies for sensitive people. They can have abdominal cramps, swollen tongue and throat; feeling pressure on the neck, swollen lips and puffy eyes, itchiness, hives, and difficult breathing due to the contraction of bronchi.

chamomile herbal teaChamomile tea can worse any existing allergy. In the past, allergic properties were attributed to the anthecotulid, but chamomile contains very small amount of this substance or not at all.

Today matrikiran is blamed for the allergies of chamomile. Sesquiterpene lactones that are found in chamomile are the cause of allergies in many other plants which includes tansy, yarrow and arnica.

An alpha-methylene group of the lactone ring should be prerequisite for allergy. The flowers contain anthemic acid and tannin which can cause sickness.

Learn about Herbal Teas

Herbal teas can help us in health conditions but they can also have side-effects. Can you drink too much herbal tea? The answer is yes. You should learn about herbs and herbal teas you are drinking or wanting to try. Herbs have active substances that can have adverse side-effects so you should be careful.

My recommendation is that you learn about each herb you will consume. If you buy herbal tea you should follow the manufacturer’s preparation instructions and dosage. You should be especially cautious if you have any kind of disease or will become a mother. If you have these conditions; you should know which herbal tea can harm you or cause you side-effects. Take care.

About Vania Pinteric 143 Articles
My name is Vania Pinteric and I am a tea lover who has a passion for drinking and exploring different kinds of teas. Today my partner and I are big tea lovers who doesn’t miss a day without at least one cup of tea. My tea passion grew day by day, so I decided to inspire people to get to know the aromatic world of teas.