A close friend has been taking 4-7 grams of it daily for 7 years. She originally got on it to quit opioids, which worked, but yes she’s now “highly” (heh) dependent on it. Although there are likely much worse things to be hooked on, she says the withdrawals of attempting to get off were unbearable. On the bright side, her career growth in tech has gone through the roof since she started taking it as she claims it helps with her social anxiety, though causal or correlated is anybody’s guess. Would proceed w caution.