According to the Ventolin package insert possible side effects of taking this drug include fast or irregular heartbeat, chest pain, shakiness, and nervousness. There is no documentation from the Ventolin, Proair, or Proventil package insert that any of these drugs cause any type of mood altering effect.
Each pill contains levonorgestrel, a synthetic version of the hormone progestin. Levonorgestrel has been used in birth control pills for over 35 years. Plan B One-Step contains a higher dose of levonorgestrel than that in regular birth control pills.
Take Plan B One-Step Â® within 72 hours (3 days) after unprotected sex or birth control failure. The sooner you take it, the better it works. Plan B One-Step Â® emergency contraception is used as a backup method for birth control if, for example: 1  Your regular birth control failed (e.g., your partner's condom broke or slipped). 2  You made a mistake with your regular birth control method (e.g., you forgot to take your birth control pill).