DIPHENOXYLATE HYDROCHLORIDE AND ATROPINE SULFATE IS NOT RECOMMENDED FOR CHILDREN UNDER 2 YEARS OF AGE. Diphenoxylate hydrochloride and atropine sulfate should be used with special caution in young children because of the greater variability of response in this age group. See WARNINGS and DOSAGE AND ADMINISTRATION.
Similarly, nerve damage in the arm can cause numbness. This may include damage to the nerves in the arms, shoulder, neck, or spine. This could be the result of blood circulation being interrupted or a nerve becoming compressed.
In some cases, the feeling of pins and needles in your left arm can be caused by an underlying problem like trauma or injury, diabetes, brachial neuralgia, a heart condition, multiple sclerosis or nerve damage. In these cases, treatment might require more drastic measures like chemotherapy, surgery or medication.