A daily dosage of 2 grams is considered suitable for everyday activities. However, side-effects are not too many. But if someone consumes more than this, even as much as 3 grams a day didn’t show any significant signs. However, any more than this can increase blood levels of trimethylamine-N-oxide. This can further lead to atherosclerosis — a disease that clogs your arteries. Other side-effects are stomach upset, nausea, vomiting, heartburn, seizures and diarrhoea.