How can you reduce bloating caused by birth control pills?

Patience, then switc: For most women, the symptom of bloating that can be experienced with taking a birth control pill will go away after a month or so of taking the pill, so, if possible - try to give the pill 2 months of a chance to see if it improves. If not (could try taking at nighttime), or you could switch to a different formulation (different type/amount of estrogen/progestin combination). May help.