Years ago, I made a poison side effects table to make it so that the application of deadly venom was more than just “take extra damage, optionally with a Constitution save to negate it.” I’ve also used it as a random herb or wild plant ingestion table to make uninformed foraging more… interesting.
So here it is, my expanded poison/toxin/venom side effects table. Use with care, death is possible.
The saves are listed in Erwinian System scores, but can easily be adapted for other systems with some eye-balling.
| D% | Side Effect |
| 01-10 | Pain (Roll random location) |
| 11-15 | Severe Pain (Roll random location) |
| 16-17 | Brief Blindness (2-20 minutes) |
| 18-20 | Brief Confusion (MP Save -3) |
| 21 | Blood Clotting (Bleeding less severe) |
| 22-23 | Blood Thinning (Bleeding more severe) |
| 24-26 | Excess Mucus (2-20 minutes) |
| 27-29 | Tears (2-20 minutes) |
| 30-31 | Numbness (Roll random location) |
| 32-34 | Rash (Roll random location) |
| 35 | Severe Rash (Roll random location) |
| 36 | Poisoning (1d6 for 1-6) |
| 37 | Severe Poisoning (1d8 for 1-8) |
| 38 | Hearing Impairment (2-20 minutes) |
| 39 | Brief Deafness (2-20 minutes) |
| 40 | Loss of Motor Control (1-8 hours) |
| 41 | Spastic Bowels (4-40 hours) |
| 42-45 | Vomiting (2-40 minutes) |
| 46-47 | Severe Itching (Roll random location) |
| 48-51 | Itching (Roll random location) |
| 52-53 | Hair Loss/Shedding (2-12 hours) |
| 54-55 | Circulation Loss (D6; 1-3- Fingers, 4-5- Toes, 6- Ears) |
| 56 | Severe Circulation Loss (D6; 1-3- Fingers, 4-5- Toes, 6- Ears) |
| 57-61 | Drowsiness (MP Save -7) |
| 62 | Hallucination (MP Save -7 or lasts 1-6 hours) |
| 63-64 | Breathing Problems (Con Save -6 or lasts 4-12 hours) |
| 65-66 | Chills (Con Save -5 or lasts 2-16 hours) |
| 67-69 | Fever (Con Save -5 or lasts 2-16 hours) |
| 70-72 | Sneezing (2-20 minutes) |
| 73-76 | Coughing (2-20 minutes) |
| 77-79 | Severe Coughing (2-40 minutes) |
| 80-81 | Fainting (Con Save -10 or lasts 2-12 hours) |
| 82-83 | Paralysis (Roll random location) |
| 84 | Severe Paralysis (Roll random location) |
| 85-87 | Heart Palpitations (1-4 hours) |
| 88 | Risk of Heart Failure (Con Save -7) |
| 89-90 | Organ Poisoning (D4; 1- Digestive, 2- Respiratory, 3- Senses, 4- Immune System) |
| 91 | Seizure (Con Save -12 or lasts 2-20 minutes) |
| 92-95 | Uncontrollable Gastric Reactions (4-40 hours) |
| 96 | Severe Mental Damage (MP Save -12 or roll random insanity +15%) |
| 97-98 | Mental Damage (MP Save -4 or roll random insanity +5%) |
| 99 | Risk of Death (Con Save -5) |
| 00 | Severe Risk of Death (Con Save -10) |
Joseph Erwin - Freelance Dungeon Master 