Some of the much more common Unintended effects which will come about with using gabapentin are shown below, together with their rates: Oral contraceptives, norethisterone and/or ethinyl oestradiol Co-administration of pregabalin Using the oral contraceptives norethisterone and/or ethinyl oestradiol will not influence the constant-state pharmacokinetics of possibly material. Pregabali... http://thesleepingpills.com