White horehound is a plant. The parts that grow above the ground are used to make medicine.
White horehound is used for digestion problems including loss of appetite, indigestion, bloating, gas, diarrhea, constipation, and liver and gallbladder complaints. It is also used for lung and breathing problems including cough, whooping cough, asthma, tuberculosis, bronchitis, and swollen breathing passages.
Women use white horehound for painful menstrual periods.
People also use it for yellowed skin (jaundice), to kill parasitic worms, to cause sweating, and to increase urine production.
White horehound is sometimes applied to the skin for skin damage, ulcers, and wounds.
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Pregnancy and breast-feeding: It’s LIKELY UNSAFE to take white horehound by mouth during pregnancy. It might start menstruation and could cause a miscarriage.
If you are breast-feeding stick to food amounts of white horehound. There isn’t enough information about the safety of medicinal amounts.
Don’t use white horehound on the skin if you are pregnant or breast-feeding. Not enough is known about the safety of topical use.
Diabetes: White horehound might lower blood sugar. Taking white horehound along with diabetes medications might cause your blood sugar to go too low. Monitor your blood sugar closely.
Heart conditions: There is some concern that white horehound might cause irregular heartbeat in people with heart problems. It’s best not to use it.
Low blood pressure: White horehound might lower blood pressure. This could cause blood pressure to go to low. White horehound should be used cautiously in people with low blood pressure or those taking medications that lower blood pressure.
Surgery: White horehound might lower blood sugar. This might interfere with blood sugar control during and after surgery. Stop taking white horehound at least 2 weeks before a scheduled surgery.
The appropriate dose of white horehound depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for white horehound. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.