Contraindications Ivan-tea have low blood pressure (hypotension). People eating fireweed, maybe even more to decrease it. It's great to feel unwell, to feel dizziness, nausea, can happen fainting.
At the time of the use of willow-herb is contraindicated reception of antipyretics and sedatives, as the plant possesses potent anti-inflammatory and soothing properties. This can cause disruption in the nervous system.
Sometimes found idiosyncrasy of fireweed, as in the case of the use of certain medicinal plants.
As a rule, Ivan-tea, consumed in large quantities over a month, may interfere with the function of the bowel and cause dysfunction of the gastrointestinal tract. But with the discontinuation of willow-herb are all signs of indigestion will disappear.
Contraindications fireweed has for gastritis with low acidity, as it contained theophylline accelerates gastric juice secretion, which exacerbates the disease. Therefore, even healthy people can drink on an empty stomach Ivan-tea is not recommended.
Long-term use of koporsky tea in the body accumulates coumarin (toxic substance) that adversely affects the liver.
Contraindicated fireweed in poor blood clotting: thrombosis, thrombophlebitis, varicose veins, and if you experience any problems in the hematopoietic system. In these cases, use fireweed is possible only in small portions. It must be remembered that it thins the blood, so it is advisable to obtain the advice of a physician.
Pregnant and lactating women should be careful to use fireweed to avoid unwanted consequences. Tea interferes with the absorption of vitamin B9. It is folic acid, which is involved in the development of a fetus. Therefore consultation of the doctor will not be superfluous before use fireweed in medical purposes.
The properties of fireweed are such that it acts as a laxative, so don't overdo it.
Children up to two years the use of willow-herb is contraindicated in any quantity.