Poisons
- H2 receptor antagonists overdose
- H2-blocker overdose
- Hair bleach poisoning
- Hair dye poisoning
- Hair lightener poisoning
- Hair removal agents poisoning
- Hair spray poisoning
- Hair straightener poisoning
- Hair tint poisoning
- Hair tonic poisoning
- Hand cream poisoning
- Hand lotion poisoning
- Heart of Jesus plant poisoning
- Heroin overdose
- Hornet sting
- Household glue poisoning
- Household plant food poisoning
- Hydrate - calcium
- Hydrated lime
- Hydrochloric acid poisoning
- Hydrochloride - thioridazine overdose
- Hydrocodone and acetaminophen overdose
- Hydrocodone/oxycodone overdose
- Hydrofluoric acid poisoning
- Hydrogen peroxide poisoning
- Hydrogen sulfate poisoning
- Hydromorphone overdose
- Hydroquinone poisoning
- Hydroxybenzene poisoning
- Hydroxyzine overdose