Main Article on Drug Overdose Question: What symptoms did you experience with a drug overdose? Submit Your Comment Comment from: Narender, 25-34 Male (Patient) Published: July 17 I took Avil injection plus dexamethasone plus gentamicin. Quantity was 17ml Avil, 3 ml dexamethasone and 3 ml gentamicin. Half an hour after the drug overdose my heartbeat was abnormal, it was running very fast and then slowing down. Body temperature was very high. After that I took a shower for 30 minutes in cool water. Then I had a feeling of some normalcy. For 2 or 3 days I felt a strong headache and heartbeat went up down. After 7 days I have growing acne on full back of my body and shoulders, stomach, face and I have headache all day. Comment from: Casey, 19-24 Female (Patient) Published: June 12 My symptoms of drug overdose were dizziness, feeling light, about-to-die feeling, sleepy, and coldness on skin.