I thought with taking 2 x 2mg tablet dosage it wasn't enough but if I take one at 4pm and one at 8.30pm it gets me through the night and until 4pm next day. I do find they upset my stomach if empty so I take some snack 30 mins before I take the first tablet. I had symptoms during the day but find if I keep moving it's not a problem.Hope this helps.
Veneer.