Actually, there is no specific dosage to take coconut oil for constipation. If you take one tablespoon per day and that tablespoon sends you to the bathroom, then that's the amount of coconut oil for you. If you consume more than that in a day, diarrhea may follow.
But we got to start somewhere, right? And you don't know how your body will respond to the laxative effect of coconut oil. So, it's best to start off with a teaspoon of coconut oil in the morning to test water first.
If this amount doesn't work in two hours, take one more teaspoon. Repeat this until it works. And you'll find the right amount of coconut oil per day to relieve your constipation.
To avoid any adverse reactions coconut oil might bring upon, always take coconut oil along with food. Or beverages such as smoothies, juices or multigrain drinks that are thick enough to slow the digestion of coconut oil.