Vitamin C consists of a water-soluble vitamin known as vitamin C. Vitamin C is also known as L-ascorbic acid or ascorbate.  It occurs as a white or slightly yellow crystal or powder with a slightly acidic taste. On exposure to light, it gradually darkens. In the dry state, it is reasonably stable in air, but in solution, it rapidly oxidizes.

• Vitamin C helps in the growth and repair of tissues of bones, cartilage, tendons, skin, hair, muscles and many more.
• Along with that, it helps in wound healing and also enhances the absorption of iron in our body.
• Excess of free radicals can speed up the ageing process, vitamin C due to its rich antioxidant properties help to reduce the harmful effects of these free radicals. Vitamin C is very crucial for bone and teeth health.
• It improves vision and also regulates blood cholesterol levels.
• Owing to its numerous benefits, it is very important to take an adequate amount of vitamin C in your diet.

Possibly Effective for

• An eye disease that leads to vision loss in older adults (age-related macular degeneration or AMD).
• Irregular heartbeat (atrial fibrillation). Taking vitamin C before and for a few days after heart surgery helps prevent irregular heartbeat after heart surgery.
• Emptying the colon before a colonoscopy.
• Limb pain that usually occurs after an injury (complex regional pain syndrome). 
• Skin redness caused by injury or irritation (erythema). Using a skin cream containing vitamin C might decrease skin redness following laser resurfacing for scar and wrinkle removal.
• Airway infections caused by exercise. Using vitamin C before heavy physical exercise, such as a marathon, might prevent upper airway infections that can occur after heavy exercise.
• Swelling (inflammation) of the stomach (gastritis). Some medicine used to treat H. pylori infection can worsen stomach inflammation. Taking vitamin C along with one of these medicines called omeprazole might decrease this side effect.
• A condition in which red blood cells are broken down faster than they are made (hemolytic anemia). Taking vitamin C supplements might help manage anemia in people undergoing dialysis.
• High cholesterol. Taking vitamin C might reduce low-density lipoprotein cholesterol in people with high cholesterol.
• Lead poisoning. Consuming vitamin C in the diet seems to lower blood levels of lead.
• Osteoarthritis. Taking vitamin C from dietary sources or from calcium ascorbate supplements seems to prevent cartilage loss and worsening of symptoms in people with osteoarthritis.
• Pain after surgery. Taking 2 grams of vitamin C by mouth one hour before surgery might reduce pain and the need for opioid pain relievers after surgery. 
• Wrinkled skin. Skin creams containing vitamin C seem to improve the appearance of wrinkled skin. A vitamin C patch also seems to help reduce wrinkles.

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using Vitamin C and call your doctor at once if you have:

• Joint pain, weakness or tired feeling, weight loss, stomach pain;
• Chills, fever, increased urge to urinate, painful or difficult urination; or
• Severe pain in your side or lower back, blood in your urine.

Common side effects may include:

• Heartburn, upset stomach; or

• Nausea, diarrhoea, stomach cramps.

• Transient mild soreness may occur at the site of intramuscular or subcutaneous injection.
• Too-rapid intravenous administration of the solution may cause temporary faintness or dizziness.
• Although vitamin C is generally considered safe, high doses can cause adverse effects, including heartburn, nausea, headaches, stomach cramps, and diarrhoea.
• Vitamin C is not stored in the body. If you take more than you need, the extra vitamin C will pass into your urine.
• Very large doses may also interfere with tests for sugar in diabetics and with tests for blood in the stool.

• It is an essential cofactor for many enzymes related to energy metabolism, and activates the insulin-signaling cascade to help lower blood sugar.
• Alpha-lipoic converts blood sugar (glucose) into energy using oxygen, a process referred to as aerobic metabolism. Alpha-lipoic acid is also considered an antioxidant, meaning that it can neutralize harmful compounds called free radicals that damage cells at the genetic level.

• It has long been presumed that alpha-lipoic acid can aid in the control of glucose by increasing the speed in which the blood sugar is metabolized. This could potentially aid in the treatment of diabetes
• It is believed by some that alpha-lipoic acid can effectpeople with diabetic neuropathy,
• Alpha-lipoic acid's ability to enhance calorie burning and promote weight loss has been exaggerated by many diet gurus and supplements manufacturers. 
• Alpha-lipoic acid has long been believed to influence weight and health by altering the lipid (fat) composition in the blood.
• Cosmetics manufacturers often like to boast that their products benefit from the anti-aging properties of alpha-lipoic acid.

•  Nausea,
•  Abdominal pain,
•  Allergic reaction,
•  Diarrhea,
•  Vertigo,
•  Vomiting
•  muscle cramp,
•  a tingling "pins and needles" sensation.

• Food decreases the amount of alpha lipoic acid in the body; hence it should be taken on empty stomach about 1 hour before or 2 hours after consuming food.
• Do not take alpha lipoic acid supplements on your own and as a sole treatment for diabetes, complications of diabetes and other conditions in which benefit may be claimed, as these diseases require proper medical treatment.

• Vitamin A is vital for a healthy immune system, bone growth, vision, cell recognition and reproduction. Vitamin A often works as an antioxidant, fighting cell damage, but it also has many other uses. It has a vital role in the formation of heart, lungs, and kidney.
• Other functions of vitamin A include the formation and maintenance of teeth, bones, soft tissue, white blood cells, the immune system and mucus membranes. 
• Most people get enough vitamin A from their diets. However, a doctor might suggest vitamin A supplements to people who have vitamin A deficiencies. People most likely to have vitamin A deficiency are those with diseases (such as digestive disorders) or very poor diets.

• Vitamin A is used for improving the eyesight, maintaining cells of the skin and the lining of the digestive, urinary and respiratory tracts.
• It also helps in the formation of red and white blood cells in our body that are important to carry out the various essential functions of our body.
• Topical and oral retinoids are common prescription treatments for acne and other skin conditions, including wrinkles. 
• Oral vitamin A is also used as a treatment for measles and dry eye in people with low levels of vitamin A. 
• Vitamin A is also used for a specific type of leukemia.
• Vitamin A has been studied as a treatment for many other conditions, including cancers, cataracts, and HIV. However, the results are inconclusive.

• Night blindness
• A higher risk of infections, especially in the throat, chest, and abdomen
• Follicular hyperkeratosis, leading to dry, bumpy skin.
• Fertility issues
• Delayed growth in children
• Symptoms of vitamin A toxicity include dry skin, joint pain, vomiting, headaches, confusion.

• If you take too much of Vitamin A, it can lead to birth defects, abnormalities of the liver and disorders of the central nervous system.
• It can also decrease bone mineral density, leading to an increased risk of osteoporosis.
• This is because an excess of Vitamin A suppresses the building up of bones and increases its breakdown.
• The rate of calcium absorption by Vitamin D can also get affected due to excess of Vitamin A. Therefore, it is advised to use Vitamin A only as directed by your doctor.
• Interactions. Vitamin A supplements may interact with some birth control pills, blood thinners (Coumadin), acne medicines (isotretinoin), cancer treatments, and many other drugs.
• People who drink heavily or have kidney or liver disease shouldn’t take vitamin A supplements without talking to a doctor.

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.