No guarantee!
Because the reliability of current online shopping itself is not guaranteed, let alone product quality.
Although you don’t want to hear what spirulina is, I still want to correct you: spirulina is not a medicine. Spirulina is a nutritional supplement. Its function can only provide the human body with comprehensive nutrition, mainly a complete set of amino acids, vitamins and polysaccharides. It has no other magical medicinal effects that are randomly boasted. However, among the nutritional supplements discovered by humans, it has It should be the most nutritious and high-protein source species to date.
When purchasing spirulina products or other nutritional and health products, you must first go to a large supermarket, a large drugstore, or a relatively famous specialty store, and subscribe to a relatively well-known brand to be safe.
Wish you and your family good health!