Directions For Shred JYM: Shred JYM can be taken with or without food. Some
people may have a sensitive stomach and will not tolerate green tea extract
well on an empty stomach. If this is you, be sure to take Shred JYM with
meals. Take 4 capsules 2-3 times per day. Take 1 serving first thing upon
waking in the morning. If you are sensitive to caffeine, do not take within 6
hours of bedtime.
请问是每次服用4颗 一天可以吃2-3次
还是每日服用4颗 分2~3次吃呢?

任何药物一天不得吃超过2000mg ,然后这个一粒有500mg

Google了一下 这应该不算药品 是健康食品一份=4颗胶囊 一天吃2~3份不过一份内含200mg caffeine，如果一天3份就600mg感觉有点多建议用前先问问专业医事人员吧