Has anyone had a bad reaction to Lidocaine with Epinephrine? Here are the side effects I'm worried about.

ethan_olson2026-04-17 308 6

1 min read

last active 4/17/2026

HOT

I'm scheduled for a minor dental procedure and my dentist recommended using Lidocaine with Epinephrine to numb the area. I've read about the possible side effects, and while I know they're rare, I can't help but feel anxious. I'm particularly worried about the signs of an allergic reaction and methemoglobinemia, as those sound quite scary. Has anyone here had any negative experiences with this drug? I'd love to hear some reassuring stories or, at the very least, more information to set my mind at ease.

dentalprocedures

anesthesia

medicalconcerns

ethan_olson2026-04-17

1 min read

last active 4/17/2026

HOT

Comments (6)

peter_moore4/16/2026

As a dental nurse, I can assure you that serious side effects are extremely rare. Just relax and let your dentist do their job. They know what they're doing, and they're there to help you. I've never had a patient have issues, but it's best to be careful.

christopher_turner4/16/2026

I had a friend who had a bad reaction to the epinephrine part. She broke out in hives and had trouble breathing. She ended up in the ER, and it was scary. But, like others have said, it's rare. Just be aware of the signs and you'll be okay. I'm not sure if she'll have to get a different type of anesthetic, and if so, which one, but she's getting another opinion.

kathleen_gray4/16/2026

I had a severe allergic reaction to lidocaine once. It was terrifying. I broke out in hives all over my body and had swelling in my throat. I had to go to the ER and get a shot of epinephrine to counteract it. Ever since then, I make sure to tell every doctor and dentist about my allergy. I think it's worth being careful and staying away from the stuff, the risk of side effects is too high.

lauren_meyer4/16/2026

I've had it done a few times and never had any issues. Just make sure to tell your dentist about any allergies you have. They'll take care of you!

russell_castro4/16/2026

I feel like dentists use this stuff way too much. I had it and it worked but my friend had a bad time and ended up with a really bad reaction. These problems are rare so just make sure to let your dentist know about any allergies. I've never had issues, but I was worried before having a tooth pulled. Ended up at the ER for a while when the side effects hit, really scary. I've heard people say not to worry and that it does work. But just be careful and let the doctor know about side effects.

joan_kennedy4/16/2026

I'm a dental hygienist and I can tell you that the epinephrine in the mix is what helps control bleeding. It's also what makes your heart race a bit. If you have high blood pressure or heart issues, make sure to let your dentist know. They may choose a different anesthetic. I'd get a dental hygienist recommendation, they know how to numb you up without the side effects (I hope)