Garden cress is a plant. The parts that grow above the ground are used to make medicine.
People take garden cress for coughs, vitamin C deficiency, constipation, tendency toward infection (poor immune system), and fluid retention.
How it works
Animal research suggests that garden cress might help fight some bacteria and viruses, but there isn't enough information to know if it works in humans.
Not ProvenCoughsVitamin C deficiencyConstipationWater retentionStrengthening the immune systemOther conditions
There isn't enough information to know whether garden cress is safe to use as a medicine. Large amounts might cause irritation of the intestines.
Pregnancy and breast-feeding: There is not enough reliable information about the safety of taking garden cress if you arepregnantorbreast-feeding. Stay on the safe side and avoid use.
Diabetes: Garden cress might lower blood sugar levels in people with diabetes. Therefore, blood sugar levels need to be monitored closely. Dose adjustments may be necessary for diabetes medications that are taken.
Low potassium levels (hypokalemia): Garden cress might flush potassium out of the body, possibly leading to potassium levels that are too low. Until more is known, use garden cress with caution if you are at risk for potassium deficiency.
Low blood pressure (hypotension): Garden cress might lower blood pressure. There is some concern that garden cress might interfere with blood pressure control in people prone to low blood pressure.
Surgery: Garden cress might lower blood sugar levels. There is a concern that it could interfere with blood sugar control during and after surgical procedures. Stop taking garden cress at least 2 weeks before a scheduled surgery.
Garden cress might have an effect like a water pill or "diuretic." Taking garden cress might decrease how well the body gets rid of lithium. This could increase how much lithium is in the body and result in serious side effects. Talk with your healthcare provider before using this product if you are taking lithium. Your lithium dose might need to be changed.Water pills (Diuretic drugs)
Garden cress might decrease blood sugar in people with diabetes. Diabetes medications are also used to lower blood sugar. Taking garden cress along with diabetes medications might cause your blood sugar to go too low. Monitor your blood sugar closely. The dose of your diabetes medication might need to be changed.Some medications used for diabetes include glimepiride (Amaryl), glyburide (DiaBeta, Glynase PresTab, Micronase), insulin, pioglitazone (Actos), rosiglitazone (Avandia), chlorpropamide (Diabinese), glipizide (Glucotrol), tolbutamide (Orinase), and others.Garden cress might lower blood pressure. Taking garden cress along with medications for high blood pressure might cause your blood pressure to go too low.Some medications for high blood pressure include captopril (Capoten), enalapril (Vasotec), losartan (Cozaar), valsartan (Diovan), diltiazem (Cardizem), Amlodipine (Norvasc), hydrochlorothiazide (HydroDiuril), furosemide (Lasix), and many others.Large amounts of garden cress might decrease potassium levels in the body. "Water pills" can also decrease potassium in the body. Taking garden cress along with "water pills" might decrease potassium in the body too much.Some "water pills" that can decrease potassium include chlorothiazide (Diuril), chlorthalidone (Thalitone), furosemide (Lasix), hydrochlorothiazide (HCTZ, HydroDiuril, Microzide), and others.