Plan B delays ovulation for about five days, according to Choice to Live With. Plan B, also known as the morning-after pill, is a form of oral medication that serves as emergency contraception. It is taken after unprotec... More »

Plan B can be found behind the pharmacy counter or on the shelf at most grocery and drug stores. Plan B can be obtained without a prescription, and anyone regardless of age or sex can purchase it. More » Health Women's Health Birth Control

There is no evidence that using Plan B once or multiple times causes infertility, according to Bedsider. This source also states that the greatest risk when using Plan B is unintended pregnancy as the pill is only effect... More » Health Conditions & Diseases

There are no known interactions when using the Plan B pill concurrently with antibiotics, according to McKinley Health Center. While no formal studies have been conducted to determine changes in efficacy due to medicatio... More »

A woman’s ovulation date typically occurs 12 to 16 days before the menstrual cycle begins, according to WebMD. The ovulation date varies depending on the typical length of the menstrual cycle. Women who have an average 2... More » Health Medications & Vitamins

Polymyxin B eye drops are used for seven to 10 days to treat bacterial conjunctivitis and blepharoconjunctivitis. This medication's use as a single agent has been discontinued. Instead, it is prescribed in combination wi... More »

The fertility drug Clomid can cause a one- to three-day delay in ovulation, explains the Reproductive Medicine and Surgery Center of Virginia. This may or may not delay the start of a woman's cycle. Clomid works by stimu... More » Health Medications & Vitamins Side Effects