A longstanding medical myth suggests that taking vitamin B1, also known as thiamine, can make your body repel mosquitoes.
A “systemic repellent” that makes your whole body unappealing to biting insects certainly sounds good. Even if you correctly reject the misinformation questioning safe and effective repellents like DEET, oral repellents would still have the benefit that you wouldn’t need to worry about covering every inch of exposed skin or carrying containers of bug spray whenever you venture into the great outdoors.
