The fruit is not. Acai pulp is one of the least sugary fruits there is, which is why on its own it tastes bitter and earthy rather than sweet, and pure freeze-dried acai powder inherits that. The sugar you see quoted for acai belongs to the product, not the berry: retail sachets are frequently blended with cane sugar or fruit juice to make them palatable, and a shop bowl adds syrup, granola, banana and honey on top. If you want the fruit without the sugar, buy the unsweetened powder or an unsweetened frozen pack and sweeten it yourself so you control the amount.

It sits in the middle, graded B, so it is a portion question rather than a yes or no. Small amounts stirred into a smoothie are unlikely to be a problem, but a whole bowl of pulp is a substantial serving of fruit and the powder is a concentrated form of it, so build up slowly if you are in an elimination phase. The individual groups behind that grade are all rated A, so the moderate score reflects overall load rather than one specific FODMAP.

No. Acai is graded A for histamine content, and it also comes back clean on the other amine-related columns, tyramine A and glutamate A. Its histamine liberator status is unrated rather than clean, so it is not formally cleared on that specific mechanism. The more practical histamine risk with acai is what it is served with: an acai bowl often arrives loaded with other fruit, and a bottled acai drink may be a fermented or long-shelf-life blend.

We do not have a salicylate rating for acai, so the honest answer is that it is unknown rather than safe. What we can say is that the berries we do have data for, including blueberry, blackberry, raspberry and cranberry, are all graded D for salicylate, so berries as a family tend to run high. If you are following a strict salicylate elimination such as an RPAH protocol, treat acai as an unconfirmed food and log carefully when you reintroduce it, rather than assuming the absence of a grade means the absence of a trigger.