Elderberry is a deciduous shrub or small tree with high medicinal value. At the same time, the ornamental value of elderberry is also high. The flowering period of elderberry is from April to May each year, with light yellow clusters of small flowers blooming and fruiting from July to September each year.
 
 Since ancient times, elderflower has been known as the "panacea". The ancient Egyptians believed that it had the effect of driving away evil and avoiding evil, and could prevent diseases and evil spirits from becoming entangled. Gypsies used elderberry to treat cold and epidemic for centuries. Colds and bronchial discomfort, until today, Europeans still add brown sugar to elderberry tea to make traditional cordial, which is a cold preventive medicine that children love. Chinese medicine believes that elderflower is pungent and warm. Enter the lung and bladder channel.
 
 Elderflower has a positive effect on the following symptoms:
・Sinusitis
 · cold
 · influenza
 · Swine flu
 · bronchitis
 · diabetes
 · constipate
・Increase urine output (as a diuretic)
・Promote sweating (as sweat medicine)
・Let the bleeding stop
 
 For cough, cold, hoarseness, laryngitis, influenza, shortness of breath and other symptoms, elderflower can be used as mouthwash and mouthwash. Elderflower can also be applied to the skin to treat joint pain (rheumatism), swelling, inflammation, etc. Some people use elderflower to treat red eye symptoms. As far as food and beverages are concerned, elderflower is used as a flavoring agent. As far as finished products are concerned, elderflower is an ingredient in perfume, and elderflower water is added to eye care and skin care lotions.
 
 Compared with the regulations on medicines, the regulations on herbal medicines are not so strict. At present, more research is needed to prove the safety of herbal medicines, but in any case, the benefits of taking herbal supplements must outweigh the risks before they can be used, so please discuss relevant information with herbalists or physicians first.
 
 Pay special attention, please consult your doctor or pharmacist in the following situations:
 During pregnancy or breastfeeding: Please note that so far, there is not enough information to point out that taking elderflower is safe. Please avoid taking elderflower when you are pregnant or breastfeeding.
 Diabetes: Taking elderflower may cause blood sugar to drop. If taken together with diabetes medications, it may cause blood sugar to drop too low. Please check your blood sugar status, and please confirm with your doctor whether the dose of diabetes medication you are taking needs to be reduced.
 Surgery: Elderflower can lower blood sugar. It is necessary to worry that elderflower may interfere with the operation or the stability of blood sugar after the operation. For safety reasons, please stop taking it 2 weeks before the scheduled surgery.
 Are taking other medicines: including over-the-counter medicines or indicated medicines that do not require a prescription.
 Allergies: Allergies to substances in Ren elderflower or allergies to other medicines and herbs.
 Who suffer from other diseases: such as disorders of the physiological system, or any other health conditions.