Peppermint (Mentha piperita) has a strong, clean, fresh, minty aroma. It is used to sooth digestion, improve memory and mental sharpness,and used in food and sweets. It also acts as an insect deterrent. Peppermint essential oil is believed to kill bacteria, viruses, and fungi.
Allergic reactions are possible but not probably: breathing problems, skin irritation or rashes, hives or inflammation, or throat closing. Other symptoms may include headaches, dizziness, slow heartbeat. Extreme overdose symptoms may include seizures, muscle weakness and brain damage.
In proper use, Peppermint is a powerful and pleasant oil.