Yes, it is safe to occasionally take Tylenol or Advil for menstrual cramps while taking amitriptyline for vestibular migraines. Tylenol is generally considered safer than Advil, but it's important not to exceed 15 days of analgesic use per month to avoid rebound headaches or medication overuse headaches. It's also recommended to consult with a pharmacist or healthcare provider before taking Advil to ensure it's safe for you. Generally, it's best to keep a consistent dose of amitriptyline and use a fast-acting medication for migraine relief as needed. For menstrual pain relief, Tylenol, Advil, or naproxen can be effective options, and starting the medication a couple of days before menstruation can help provide relief.