Vitamin B1 is found in many foods including yeast, cereal grains, beans, nuts, and
meat. It is often used in combination with other B vitamins, and found in many
vitamin B complex products.

It is used for the treatment and prevention of vitamin B1 deficiency. It is also used to
treat Beriberi and Wernicke's encephalopathy.

 Allergic reaction
 Skin irritation
 Cough
 Decreased blood pressure
 Difficulty in swallowing
 Breathlessness
 Facial swelling
 Increased sweating

Vitamin B1 is LIKELY SAFE for pregnant or breast-feeding women if taken in proper
quantity.
Alcoholics and people with cirrhosis often have low levels of Vitamin B1. Nerve pain
in alcoholism can be worsened by Vitamin B1 deficiency. These people might
require Vitamin B1 supplements.
People undergoing hemodialysis treatments might have low levels of Vitamin B1. 
People with heart failure might have low levels of Vitamin B1. 
People that are critically ill such as those that had surgery might have low levels of
Vitamin B1.

Vitamin B6 is a water-soluble vitamin. Water-soluble vitamins dissolve in water so the body cannot store them.Vitamin B6 is a group of related compounds. It is necessary for maintaining important functions in the body such as glucose and amino acid metabolism, production of RBCs, proper functioning of the nervous system, etc

• Vitamin B6 is used to treat or prevent vitamin B6 deficiency.
• It is also used to treat a certain type of anemia (lack of red blood cells).
• This medicine injection is also used to treat some types of seizure in babies.
• Vitamin B6 (Pyridoxine) provides essential nutrients.
• Vitamin B6 helps the body to:
• Make antibodies. Antibodies are needed to fight many diseases.
• Maintain normal nerve function.
• Make hemoglobin. Hemoglobin carries oxygen in the red blood cells to the tissues. A vitamin B6 deficiency can cause a form of anemia.
• Break down proteins. The more protein you eat, the more vitamin B6 you need.
• Keep blood sugar (glucose) in normal ranges.
• Vitamin B6 is being studied in the prevention of hand-foot syndrome

• Clumsiness
• Numbness of hands or feet
• Unsteady walk
• Sleepiness

• Follow your doctor's instructions about any restrictions on food, beverages, or activity.
• Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
• This medicine is not recommended for use in breastfeeding women unless necessary.

• Folic acid is the synthetic form of folate, which is a naturally occurring B vitamin. Folate helps make DNA and other genetic material. It is especially important in prenatal health.
• Folate, also called vitamin B-9, is a B vitamin that naturally occurs in certain foods. Folic acid is the form of folate that manufacturers add to vitamin supplements and fortified foods.

• It helps the body make healthy new red blood cells.
• In its deficiency a person can develop anemia, leading to fatigue, weakness, and a pale complexion.
• It leads to folate deficiency anemia.
• Folate is also important for the synthesis and repair of DNA and other genetic material.
• It is particularly important to get during pregnancy. Folate deficiency during pregnancy can lead to neural tube irregularities, such as spina bifida and anencephaly.
• Folic acid is crucial for early fetal development.
• Neural tube irregularities - Taking folic acid supplements before and during pregnancy will help prevent neural tube irregularities in the fetus.
• It may also reduce the risks of preterm birth, heart irregularities, and cleft palate, among other things.
• Depression - Taking folic acid supplements could make depression medications more effective.
• The Office on Women’s Health recommend that women who are or might become pregnant take 400–800 mcg of folic acid per day, and that people with spina bifida or a family history of neural tube irregularities take 4,000 mcg per day. Those who are breastfeeding should aim to take around 500 mcg per day.
• The body absorbs folic acid from supplements and fortified foods better than the folate from naturally occurring foods.

Skin reactions, seizures, gases problem, diarrhea, irritability, confusion, stomach upset, loss of appetite, and hypersensitivity

It is important to note that folic acid can interact with certain medications.

A person should speak to a doctor before taking folic acid if they have any of the following:

• Epilepsy
• Type 2 diabetes
• Rheumatoid arthritis
• Lupus
• Inflammatory bowel disease (ibd)
• Celiac disease

People undergoing kidney dialysis may also wish to avoid taking folic acid.