This product comes loose in a sealed cardboard bag 50 grams, 3~5 grams per serving. The Mulberry whole leaves can be brewed more than 5 times in a 500~600ml tea pot.
Mulberry leaf, according to "The Divine Husbandman's Herbal Foundation Canon mulberry leaves have the functions of - removing cold and heat, sweating, clearing the lungs moistening, dispersing wind-heat, clearing the liver, improving eyesight.
It is often used in combination with chrysanthemum to treat exogenous wind-heat, cold, cough, Eye disease and so on.
Other sources of journal papers:
1. Suresh G. Killedar and Aarti V. Pawar. 2017. "Preparation of herbal tea from mulberry leaves". Journal of Medicinal Plants
https://www.semanticscholar.org/paper/Preparation-of-herbal-tea-from-mulberry-leaves-Killedar-Pawar/8c8a155a7d6643f8b0f080d44184c03eace9effd
2. Yoshihiro Kojima, Toshiyuki Kimura, Kiyotaka Nakagawa, Akira Asai, Keiji Hasumi, Shinichi Oikawa, Teruo Miyazawa. 2010. "Effects of Mulberry Leaf Extract Rich in 1-Deoxynojirimycin on Blood Lipid Profiles in Humans". Journal of Clinical Biochemistry and Nutrition
https://www.jstage.jst.go.jp/article/jcbn/47/2/47_10-53/_article/-char/ja/
3. Lee, W. J., & Choi, S. W. (2012). Quantitative Changes of Polyphenolic Compounds in Mulberry (Morus alba L.) Leaves in Relation to Varieties, Harvest Period, and Heat Processing. Preventive nutrition and food science, 17(4), 280–285.
https://www.ncbi.nlm.nih.gov