Hi mate, i have been asked and given by my Dr the double strength in the tablets, it's called Mezavent XL (1200 mg per tablet). Therefore i take two a day. Maybe if you find it is too much to remember to take twice a day, talk to your Dr, he could give you this one. But it's preference over all, i hate taking pills, so easier for me to take the higher dose daily.
Re the question you asked hun, i will say take 3 in the morn and three in the evening, that is what my Dr said about taking six per day, sometimes i forgot to take them in the evenings, all being it at work... doing shift work... one reason or another so Dr asked me about Mezavent XL and i am very happy with these. Bear in mind these tablets are quite huge to take.
But overall you decide how you want to take them. Do enquire about the new Mezavent Xl though. Good luck, i wish you good health.