8 grams a day is a huge dose and would be expensive. Looking online, the average dose per capsule seems to be 800 mg. You'd have to take 10 capsules a day to reach 8 grams.
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I use the powder. It’s much cheaper. 1 scoop in the morning, another at 3pm and one before bedtime.
If you take pills, you would need to consume 16 daily.