Vitamin B9: Deficiency V/S Toxicity

Vitamin B9 is a water-soluble vitamin that is found in many foods, ranging from plant sources to dairy products. Vitamin B9 is also known as folic acid or folate and has various supplemental forms available. 

Food sources of Folic acid:

  • Among dairy products, the ones rich in folic acid are, fortifies milk, yogurt, and cheese. Eggs have also a good amount of folic acid and proteins. 
  • Fruits that contain folic acid in tremendous amounts are avocado, banana, orange, papaya, kiwi, and many more citrous and fibrous fruits.
  • Dry fruits also are good sources of folic acid, such as walnuts, almonds, nuts and seeds, sunflower seeds and peanuts, etc.
  • Vegetables rich in folic acid are beetroot, spinach, turnip, broccoli, okra, asparagus, brussel sprout, cabbage, cauliflower, lettuce, potatoes, and peas. 
  • Fortified cereal also contains vitamin B9, such as cakes, crackers, bakeries, etc. 

All these foods are good for having a regular intake of vitamin B9, however, if you can’t have access to these or your folic acid requirements are not fulfilled by the food you can also opt for a folic acid supplement.

Vitamin B9 deficiency:

The lack of vitamin B9 in your body may put you at risk for various health conditions. You may be obtaining a good amount of Vitamin B9 in your diet but due to some diseases, the vitamin does not get absorbed in your blood from the food. 

Causes of vitamin b9 deficiency: 

  • Pregnancy
  • Alcoholism
  • Celiac disease
  • Inflammatory bowel disease
  • Crohn’s disease
  • Stomach ulcers
  • Anorexia 
  • GERD

The consequences of having folic acid deficiency are as follow,


  • Folic acid anemia is caused by having too little vitamin B9 in your bloodstream.
  • Megaloblastic anemia is a type of anemia when there is a fewer number of red blood cells in the body, but the cells have an abnormally large size. It occurs as a result of the failure of folic acid absorption in the GI tract.
  • Pernicious anemia is another type that is also caused by the GIT failure to absorb vitamin B9 or convert it into an active form.

Erectile dysfunction:

  • Erectile dysfunction is also known as impotence in men is the inability to achieve a healthy erection. This occurs when the oxygenated blood flow to the genital tissues is compromised and there is less than normal blood that flows into the penile sinuses. 
  • It can occur because of folic acid deficiency in your body, as the blood cells lose the capability to transport oxygen to the target tissues. The penile tissue also doesn’t get enough of the blood supply.
  • Erectile dysfunction is commonly treated with drugs specific for erection like Kamagra 100mg tabletswhich you can buy online from our websiteBut before that, you need to normalize your Vitamin B9 levels as the drug will only work if you have healthy blood cells. 

Neural tube defects:

  • In pregnant women, a lack of folic acid leads to worse consequences for the fetus. The baby born has a greater risk of neural tube defects.
  • This is why pregnant women are advised to take a 400mcg dosage of folic acid supplements per day, to prevent harm to the mother and the fetus as well.

Vitamin B9 toxicity:

The daily dosage for Vitamin B9 is 400mcg in normal adults and 400 to 800mcg in pregnant females. Just like every other nutrient, vitamin B9 can also be dangerous if taken in excess. Therefore it is recommended to consult a physician before taking any folic acid supplements. The symptoms of folic acid toxicity include,

  • Abdominal cramps
  • Diarrhea
  • Rash
  • Sleep disorders
  • Irritability
  • Confusion
  • Nausea
  • Stomach upset
  • Behavior changes
  • Skin reaction
  • Seizures, gas
  • Excitability

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