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Benadryl Side Effects

Taking Benadryl and alcohol simultaneously may increase the risk of dizziness, drowsiness, and difficulty concentrating, leading to accidents or injuries. Moreover, combining alcohol and Benadryl can increase the risk of other side effects such as nausea, blurred vision, and difficulty breathing.

Diphenhydramine Benadryl Overdose Symptoms & Side Effects

Benadryl overdose can cause serious heart rhythm troubles, leading to death.  Diphenhydramine overdose is due to toxicity from overdosing on Benadryl or taking too much of the drug. Common signs of Diphenhydramine overdose include extreme drowsiness, blurred vision, increased heart rate, confusion, seizures, heart troubles & even coma.