The cell bodies of the presynaptic neurons of both the parasympathetic and sympathetic systems are located within the central nervous system. These presynaptic autonomic neurons synapse only with postsynaptic autonomic neurons.he cell bodies of the presynaptic neurons of both the parasympathetic and sympathetic systems are located within the central nervous system. These presynaptic autonomic neurons synapse only with postsynaptic autonomic neurons.
Hydrocodone/APAP and Pregnancy Category C. The acetaminophen component of hydrocodone/APAP is usually considered safe for pregnant women (see Tylenol and Pregnancy) . However, the hydrocodone component may not be safe.When given to pregnant hamsters, a single dose of hydrocodone increased the risk of birth defects, including cranial defects.Limited human studies also indicate that hydrocodone may increase the risk of similar birth defects in humans.ydrocodone/APAP and Pregnancy Category C. The acetaminophen component of hydrocodone/APAP is usually considered safe for pregnant women (see Tylenol and Pregnancy) . However, the hydrocodone component may not be safe.
There arenât many choices for safe drugs in pregnancy. Photo by epsos.de, CC-BY. Tylenol use in pregnancy is now linked to ADHD. Tylenol was considered the safest analgesic (pain relief) for pregnant women, but in truth there is only one way for pregnant women to avoid potentially dangerous medication: Donât get sick. There are vanishingly few drugs that are officially considered safe in pregnancy. The system we use in the US is a letter-graded pregnancy category. The top ranking, category A, is awarded to drugs where âadequate and well-controlled studiesâ have looked for risks in the first trimester, and failed to find any.