Yes - any medication that you take while on Birth Control has the option to interfere with its intensity.
X-rays do not lower the effectiveness of the birth control pill.
No, using two methods of birth control increases effectiveness or leaves effectiveness unchanged.
No. If you are taking birth control pills neither of those will effect the pill. I took all three together for years and never had my pills fail. The only drug that effects the effectiveness of your pill is an antibiotic .It does lessen the pill.
I have also wondered this question and with the research that I have done, it says that neither affects the effectiveness of birth control pills
Yes it may. I have recently read that obesity can affect the effectiveness of birth control.
There are no known drug interactions between fluoxetine (Prozac) and birth control.
There is no combination of birth control that cancels its effectiveness.
No.
Check with your doctor as to the effectiveness of your birth control when used in conjunction with other medications. Reduced effectiveness may be seen in some cases.
The birth control pill reaches its full effectiveness after seven days in a row.
Antibiotics reduce the effectiveness of birth control. You should use a backup method like condoms.
Yes, St John's Wort can decrease the effectiveness of birth control up to 50 percent