Lysine and Pregnancy: Safety for Fever Blisters & Potential Risks

Question
In the past I have took Lysine for fever blister, and it worked for me.  I think I am pregnant not sure yet...I am not late yet, but if I am pregnant will the Lysine harm the baby in any way.  I am confused I have read different things.  Thanks for taking the time to read my question.
Angela

Answer
Dear Angela,

L-Lysine is considered a FDA Pregnancy Risk Category C medication. This means that:
-Studies on animals show adverse effect and toxicity on fetus.
-No adequate and well controlled studies done on pregnant women.
-Drugs should be given only if the potential benefit outweighs the potential risk to the fetus.

Since you do not know whether you are pregnant or not OR, if you are, when you would have become pregnant, there really is no sense worrying about this. The medication has been taken and there is no absolute risk known in humans, so you'd be worrying for no reason at this point.

Try to relax and, if pregnant, ENJOY!  :-)

I hope this has helped you and answered your question. I wish you well.

Brenda