Truth, can vitamin B1 really repel mosquitoes?

Internet Rumors:

Mosquitoes can also be repelled without chemicals. Prepare a makeup vial that can be sprayed with water and five tablets of vitamin B1 multivitamin. Pour water into the vial, then put the tablets into the vial, shake well, and spray the vial on arms, legs, body and other parts before going to bed. Mosquitoes are afraid of the smell of vitamin B1 multivitamin.

There are still many people around me who believe this rumor, but is it true?

Vitamin B1 repels mosquitoes, which is just an Internet legend.

The U.S. Food and Drug Administration (FDA) has described over-the-counter (OTC) mosquito repellent on the market. Among them, vitamin B1 drugs are explicitly mentioned:

Oral vitamin B1 is a mosquito repellent OTC drug on the market. At present, there is no sufficient data to show that this practice is effective. Those that indicate on the drug label that they are oral mosquito repellent OTC drugs are false, misleading and unsupported by scientific data… In short, any oral OTC drug that claims to contain mosquito repellent ingredients cannot ensure safety and effectiveness.

In addition, vitamin B1 is not mentioned in the confirmed effective mosquito repellent ingredients published on the website of the U.S. Centers for Disease Control and Prevention (CDC).

One of the main reasons people believe vitamin B1 can prevent mosquitoes is that Vitamin B1 has a disgusting smell-it smells faint and tastes bitter. It is believed to repel mosquitoes and has a rather [poison against poison] taste-which humans do not like and mosquitoes probably do not love. Unfortunately, although this idea is good, mosquitoes do not eat it at all.

For example, mosquitoes like the smell of sweat that you and I can’t avoid.

Secondly, vitamin B1 is very water soluble, But it brings another problem. It is not stable in water. Afraid of heat, see light easy to decompose. The method of dissolving vitamin B1 in water and spraying it is even more unreliable. Insert a digression, some functional beverages that have appeared in recent years claim to contain water-soluble vitamin B1, which is helpful to human functions. Don’t believe it. When the beverage is drunk in your mouth, it is basically decomposed.

It is worth reminding that, The daily requirement of human body for vitamin B1 is 1 ~ 1.5 mg, Meat, beans and nuts are rich in vitamin B1, Generally, no additional supplement is required. However, in various mosquito repellent formulas circulated on the Internet, the dosage of vitamin B1 is close to 100 times that required by normal human body. Although there are few reports of excessive harm of vitamin B1, it may interfere with the absorption of other B vitamins and the secretion of insulin and thyroxine. Large supplements are not wise.

Conclusion: Rumor Cracking

The current scientific research results do not support the topic of [vitamin B1 is a natural mosquito repellent].