I've worked up to 16 grams a day...because the more of these yellow pills I take, the better my allergies and asthma do. I'm not sure more would be helpful, but I am sure it's already costing me a lot for the pills.
Small amounts don't seem to cut it for allergy control-personal experience and what I've read online. You need to think in terms of grams for allergy control.
It might too explain why I'm more prone to restlessness and agitation these days.