Can Pregnant Women and Lactating Mothers Use Dr. Numb® Cream?

September 08, 2015   3585

Dr. Numb – an effective topical numbing agent that is used to help the patient bear various pain and painful procedures. Among the various pains that humans usually bear is the pregnancy and delivery pain. So, does using Dr. Numb during pregnancy or lactation period is safe for the mother and the baby?  Have a look.

Dr. Numb Cream Pregnant Women

Lidocaine Pregnancy Warnings

Dr. Numb is a topical numbing agent that contains Lidocaine – a local anesthetic used to set free a person from bearing any pain. A medication that contains 5% Lidocaine is said to be an effective solution, just like Dr. Numb.

FDA has assigned Lidocaine to the pregnancy category B. Although, the animal studies have failed to show any evidence of fetal harm due to Lidocaine dose, but there are no data of its negative impact on foetus.

Use of Lidocaine in Pregnancy

Use of Dr. Numb or Lidocaine in labor and delivery may effect in fetal and newborn toxicity. Therefore, experts recommend to use Lidocaine only during pregnancy and in labor when need has been clearly recognized.

Effects of Lidocaine

Lidocaine crosses the human placenta rapidly. Studies and Statistics have shown that the average umbilical cord to plasma concentration ratio ranges from 0.5 to 0.7. Due to decreased plasma protein binding, the free portion of Lidocaine in newborn infants may be greater than in the mother.

Symptoms of decreased Apgar scores, fixed and dilated pupils, hypotonia, and apnea have been stated in some newborns whose serum levels were 2.5 mg/L or more. Also, neonates whose mothers received continuous Lidocaine epidural anesthetic blocks had also decreased muscle tone in comparison to those neonates whose mothers received placebo.

However, a few other data have not supported this association. The placental transfer of Lidocaine after prolonged maternal IV administration has been reported. After 14.1 g of lidocaine (50 mg/hour. for 282 hours), the umbilical vein, lidocaine concentration ratio averaged 0.52 (average maternal and umbilical vein concentrations of 1.6 and 0.83 mcg/mL, respectively). These data are somewhat like those described after smaller periods of administration of lidocaine during labor pain. All these data do not support an association between lidocaine and birth defects.

Lidocaine and Breastfeeding

Some limited stats have shown that the average milk lidocaine levels were approximately 40% of maternal serum levels.

In one case, a 37-year-old woman who had received two lidocaine boluses of 75 and 50 mg, then a continuous infusion of 2 mg per minute, had lidocaine levels of 2.0 and 0.8 mg/L in her serum and milk, respectively. The milk sample was obtained two hours after the lidocaine infusion was stopped.

Lidocaine is defecated into human milk. There will be no side effects in the nursing infant and would probably be limited to an individual or allergic reaction. It is just that one should be cautious while administering lidocaine to the nursing females.

Safe during Breastfeeding

Lidocaine is present in breast milk. Although, there are no negative side effects on the infant with lidocaine use while breastfeeding, allergic reactions have befallen. If your infant shows signs of an allergic reaction after breastfeeding, contact your doctor immediately.

General Precautions

The only thing to take care is the amount of Lidocaine given to the mother. Although, there are no side effects reported in the infants born to mothers using the anesthetic. However, over quantity may sometimes lead to some allergies. At a normal dose, adverse outcomes are unlikely.

Conclusion

When using Dr. Numb in pregnant and lactating mothers, make sure to take device from the pediatrician about the amount of cream used to avoid any unwanted side-effects to the newborn.

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