The recommended does per day (24 hours ) ranges from 20mg to 90mg of EAs total start slow perhaps at one half of one pill per day.
If America was truly free as it says it is than why on earth would so many people need a fix to solve their problems. Supplements should be labeled with an expiration date and stored properly.
The safe attitude is then to stay under a reasonable limit: in that way you won't have the maximum benefits but you stay on the safe side. Many prescription medications are only available by prescription because the drug companies make much more money that way. Many maple syrup producers use chemicals in processing; buy only organically produced maple syrup to avoid this.