Concern about medications during pregnancy


Q: I found out today that I am pregnant (28 days since LMP) through a home pregnancy test. Yesterday I had a filling done by my dentist, and used nitrous gas. Should I be concerned?

Symptoms:  None

A:   Hello,
Idally speaking, no form of medication should be used at least in the first trimester of pergnancy to avoid any chances of any congenital anomalies, except the Folic acid tab daily. But as you have already been exposed to nitrous oxide which though dissolves very fast in the blood and cause short anaesthesia, but also is eliminated sooner from the system, so it is unlikely to cause an effect.
However it is important to establish a fetal cardiac activity by 6-7 week to be sure if it hasn't caused any possible defects which may sometimes land up in missed abortions. Also antibiotics are to be avoided in the first trimester which you may have been given with your dental treatment.
In studies long exposures on nitrous oxide have been seen to cause spontaneous abortions in many but with short exposures likelihood is less. So, it is advised to stay informed and follow antenatal protocol which can be explained by your physician in detail, and hope for a safe pregnancy.
I hope i have answered your query in detail,
wishing you safe pregnancy , regards

Related Q&A

Q: I rubbed my penis over my girlfriend's vagina. I did not ejaculate. It was covered in pre-ejaculate though and I had ...

Q: Hi I'm a 17 year old female and two weeks ago I started taking the contraceptive pill. Unfortunately I wasn't infor...

Q: If I my girlfriend and I were grinding naked during ovulation or the day before and I had Precum on my finger and fin...

Q: Had sex on day 14/15 of my cycle which is usually 27/28 days. We used a condom but it broke . He wasn't near ejacula...

Q: I had a 3 day bleeding with cramps, which was different from my usual period, 27 days after having had unprotected se...


Dr. James Obaji M.D.

  • 247 Reviews
  • Family Physician

Dr. Suneel Sharman M.D.

  • 190 Reviews
  • Family Physician

Dr. Pat Golden M.D.

  • 169 Reviews
  • Cardiologist

Dr. Kunaal Jindal M.D.

  • 112 Reviews
  • Plastic Surgeon