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.
Emergency contraception, sometimes called by one brand name, Plan B, only works if used up to 12 hours after unprotected sex or a condom failure. It works by preventing ovulation, possibly preventing fertilization or by altering the endometrium which inhibits implantation.