Today we know much more about herbs than before: that a healing herb also has harmful ingredients, and that the treatment depends on proper dosage. Also a known reactions and collisions which may occur in combination with other herbal drugs.

Here are some possible contraindications of some medicinal herbs:

Aloe Vera – enhances the action of hydrocortisone creams. Concomitant use of drugs against diabetes can drastically reduce the level of sugar in the blood and can cause hypoglycemia and fainting, because in such a case, the brain remains without power.

Blueberry – fruits may not be used in inflammation of the kidneys. The use of these fruits requires precise dosing. And it is not recommended during pregnancy.

Onion – prevents blood clotting and therefore they mustn’t be consumed simultaneously with other anti – clotting products. When using drugs against AIDS, its efficiency is reduced.

Chestnut – home remedies prepared from the fruit or the leaf of the chestnut can be dangerous and cause poisoning after oral consumption. When combining assets against blood clots, it is necessary to consult a doctor.

Echinacea – cannot be used in autoimmune diseases because it might provoke complete growth of the immune system and also on the part that attacks the body. These are diseases of the thyroid gland, rheumatoid arthritis, Crohn’s disease, ulcerative colitis, Lupus, HIV, multiple sclerosis, and herpes.

Eucalyptus – Eucalyptus oil is poisonous, while oil products made from eucalyptus can affect weight loss of enzyme composition of the liver. It mustn’t be given orally to children younger than two years.

Comfrey – ointment made from comfrey must never be applied on ulcers that are still full with pus. In this case, the skin regenerates the surface and becomes thick and healthy, while in the deep part the pus will remain and make the process even more inflammatory than before.

Ginkgo Biloba – should not be consumed while consuming medications for blood clots. Enhances the action of antipsychotic drugs. The concomitant use of antidepressants can cause sexual disturbances. Do not use it together with aspirin and anti – rheumatic drugs.

Hawthorn – should not be consumed at the same time with medications for regulation of blood pressure. If it comes to heart disease, it is necessary to consult with a doctor before consumption hawthorn.

Cilantro – the basic problem is that the effects of cilantro collide with the action of many other drugs, therefore, you will need to consult a phytotherapeutist or a doctor who is familiar with it.

Hops – when consumed simultaneously with tranquillizers, it increases their action.

Sage – in large (or larger doses for sensitive people) dose it is neurotoxic, which means it can cause nervousness, headaches, and rarely hallucinations. Many strong teas cause contraction or tightness of muscles, which means that in a very sensitive stomach it can cause nausea and vomiting, and in pregnant women unwanted contractions of the uterus. You also need to be careful with strong doses in epileptic or people with migraines, ie, for all those who are hurt from muscle crump.

Chamomile – in higher doses, it increases the activity of drugs against clots. Should not be consumed simultaneously with tranquillizers or alcohol. In a very sensitive stomach, strong and unsweetened dose can cause nausea.

Nettle – usually consumed to increase iron and for spring cleaning of the body, but if you have a very low pressure, then you will make a mistake. It strongly drains kidneys and upsets the natural balance of the water in the body, of which the blood pressure is directly dependent.

Linden – it enhances the effect of drugs for heart failure, that is why simultaneously combining is not recommended. In long uninterrupted consumption of linden tea can cause heart failure (it is a really long time in that constantly drink linden tea). You have to be careful with children and elders.

Melissa – it enhances the effect of tranquillizers.

Chives – in sensitive people with severe low pressure can cause even greater pressure drop.

Mint – in long – term use it can cause difficulties with kidneys, heart disturbances and loss of appetite.

Wormwood – prolonged use should be avoided. With excessive use it can lead to dizziness, temporary intoxicating, clouding of consciousness and even brain disorder. May cause gastric upset, constipation and excess stomach acid. Do not use in stomach and intestine ulcer.

Greek Seed – if you want to make a cream of Greek seed, except that you are going to have a perfectly clean skin, gently illuminating and tanned, it can boost hairiness.

Coltsfoot – the frequent comments that coltsfoot is bad for the body and that long – term usage is poisonous, is in fact about a relative of our coltsfoot which grows only in North America.

Horse Wormtail – there is a belief that the horse tail causes a reduction of vitamin B that encourages the creation of stones in the kidney, but it refers to the Polish pig tails which are not used for human consumption and are most prevalent in America.

Turnip – the application of turnip heart patients should be careful, same as those with liver problems, with stomach ulcer, duodenum and inflammation of the digestive tract.

Rosemary – stimulates circulation and warms cold feet, but it can increase blood pressure and menstrual bleeding.

Sena – used against constipation because it stimulates peristalsis, which can cause cramps.

Yarrow – in sensitive people with low pressure it can cause even lower pressure.

Valerian – increases the action of drugs for insomnia and calming, and should not be consumed simultaneously. In large quantities and prolonged consumption can damage the heart and cause addiction, and possible difficulties to the liver and trembling hands.

Green Tea – caffeine from green tea can cause complications if combined with antidepressants. In larger quantities can dilute the blood.