VITAMIN
E Overview Information
Vitamin E is used for treating vitamin E deficiency, which is rare, but can occur in people with certain genetic disorders and in very low-weight premature infants.
Some people use vitamin E for treating and preventing diseases of the heart and blood vessels including hardening of the arteries, heart attack, chest pain, leg pain due to blocked arteries, and high blood pressure.
Vitamin E is also used for treating diabetes and its complications. It is used for preventing cancer, particularly lung and oral cancer in smokers; colorectal cancer and polyps; and gastric, prostate, and pancreatic cancer.
Some people use vitamin E for diseases of the brain and nervous system including Alzheimer’s disease and other dementias, Parkinson’s disease, night cramps, restless leg syndrome, and for epilepsy, along with other medications. Vitamin E is also used for Huntington’s chorea, and other disorders involving nerves and muscles.
Women use vitamin E for preventing complications in late pregnancy due to high blood pressure (pre-eclampsia), premenstrual syndrome (PMS), painful periods, menopausal syndrome, hot flashes associated with breast cancer, and breast cysts.
Sometimes vitamin E is used to lessen the harmful effects of medical treatments such as dialysis and radiation. It is also used to reduce unwanted side effects of drugs such as hair loss in people taking doxorubicin and lung damage in people taking amiodarone.
Vitamin E is sometimes used for improving physical endurance, increasing energy, reducing muscle damage after exercise, and improving muscle strength.
Vitamin E is also used for cataracts, asthma, respiratory infections, skin disorders, aging skin, sunburns, cystic fibrosis, infertility, impotence, chronic fatigue syndrome (CFS), peptic ulcers, for certain inherited diseases and to prevent allergies.
Some people apply vitamin E to their skin to keep it from aging and to protect against the skin effects of chemicals used for cancer therapy (chemotherapy).
The American Heart Association recommends obtaining antioxidants, including vitamin E, by eating a well-balanced diet high in fruits, vegetables, and whole grains rather than from supplements until more is known about the risks and benefits of taking supplements.
How
does it work?
Vitamin E is an important
vitamin required for the proper function of many organs in the body. It is also
an antioxidant. This means it helps to slow down processes that damage cells.- Vitamin E deficiency.
- Bladder cancer. Taking 200 IU of vitamin E by mouth for
more than 10 years seems to help prevent death from bladder cancer.
- Alzheimer’s disease. Vitamin E might slow down the
worsening of memory loss in people with moderately severe Alzheimer’s
disease. Vitamin E might also delay the loss of independence and the need
for caregiver assistance in people with mild-to-moderate Alzheimer’s
disease. But vitamin E does not seem to prevent moving from mild memory
problems to full-blown Alzheimer’s disease.
- Painful menstruation (dysmenorrhea). Taking vitamin E
for 2 days before and for 3 days after bleeding begins seems to decrease
pain severity and duration, and reduce menstrual blood loss.
- Premenstrual syndrome (PMS). Taking vitamin E by mouth
seems to reduce anxiety, craving, and depression in some women with PMS.
- Chemotherapy-related nerve damage. Taking vitamin E
before and after treatment with cisplatin chemotherapy might reduce the
chance of getting nerve damage.
- Ischemic stroke. Some research shows that taking
vitamin E might slightly decrease the chance of having a stroke caused by
a blood clot (ischemic stroke). But taking vitamin E might also increase
the chance of having a more severe type of stroke, called hemorrhagic
stroke. This kind of stroke occurs when there is bleeding into the brain.
- Liver disease called nonalcoholic steatohepatitis.
Taking vitamin E 400-1200 IU daily seems to significantly improve symptoms
in adults and children after 4-24 months of treatment.
- Huntington’s chorea. Natural vitamin E
(RRR-alpha-tocopherol) can significantly improve symptoms in people with
early Huntington’s disease, but it doesn’t seem to help people with more
advanced disease.
- Macular degeneration. Taking vitamin E by mouth in
combination with vitamin C, beta-carotene and zinc might slow the
worsening of advanced age-related macular degeneration (AMD). There isn’t
enough information to know if this combination helps people with less
advanced macular disease or prevents AMD. Zinc needs to be present in the
combination for there to be any effect on AMD.
- Rheumatoid arthritis (RA). Vitamin E taken along with
standard treatment is better than standard treatment alone for reducing
pain in people with RA. But this combination doesn’t reduce swelling
(inflammation).
- Male infertility.
- High blood pressure during pregnancy (pre-eclampsia).
- Movement disorders called tardive dyskinesia and
dyspraxia.
- Parkinson’s disease.
- Kidney problems in children (glomerulosclerosis).
- Helping to treat an inherited disorder called G6PD
deficiency.
- Beta-thalassemia.
- Dementia.
- Healing a type of skin sore called granuloma annulare
when put on the skin.
- Uveitis.
- Sunburn.
- Helping the eyes heal after surgery.
- Treating a type of eye disease in newborns called
retrolental fibroplasia.
- Decreasing brain and heart bleeding in premature
babies.
- Helping some heart medications called “nitrates” work
better.
- Improving physical performance and strength in the
elderly.
- Fibrosis caused by radiation.
- Anemia in people having hemodialysis.
- Chest pain (angina).
- Hot flashes in people who have had breast cancer.
- Hardening of the arteries (atherosclerosis).
- Breathing problems in newborns.
- Lung infections in elderly persons.
- Heart failure.
- Treating muscle diseases called Duchenne muscular
dystrophy and myotonic dystrophy.
- High blood pressure.
- Helping people walk without pain when they have a
disease called intermittent claudication.
- A type of arthritis called osteoarthritis. Vitamin E
does not seem to decrease pain or stiffness and does not seem to prevent
osteoarthritis from getting worse.
- Head and neck cancer.
- Sores in the mouths of people who smoke.
- Cancer of the pancreas.
- Pharyngeal cancer.
- Reducing scarring after surgery.
- Colorectal cancer.
- An eye condition called retinitis pigmentosa.
- Preventing heart disease. Taking vitamin E supplements
does not prevent heart disease. But increasing vitamin E in the diet might
be beneficial.
- Benign breast disease.
- Breast cancer.
- Lung cancer.
- Prostate cancer. Research on the effects of vitamin E
on prostate cancer risk has produced results that don’t agree. Some
studies suggest that taking more vitamin E seems to prevent prostate
cancer. But other large studies find no benefit. Some research has also
shown that taking vitamin E might increase the chance of developing
prostate cancer. Overall, the best research indicates that vitamin E does
not help prevent prostate cancer and might increase the chance of
developing prostate cancer.
- Asthma. There is inconsistent evidence about the role
of vitamin E in asthma. Some research suggests that getting more vitamin E
from the diet seems to prevent asthma. But getting vitamin E from
supplements doesn’t have the same benefit.
- Cancer. Some research suggests a combination of vitamin
E with vitamin C, beta-carotene, selenium, and zinc lowers the risk of
cancer in men, but not women. Researchers suspect that men get a lower
amount of these vitamins from food, so they might benefit more from
supplements.
- Stomach cancer. Taking vitamin E plus beta-carotene or
vitamin C and beta-carotene does not seem to prevent stomach cancer. But
there is limited evidence that getting more vitamin E from the diet might
slow the progress of stomach cancer.
- Sickle cell disease. Taking vitamin E with aged garlic
extract and vitamin C might be useful for sickle cell anemia.
- Stroke caused by a clot (ischemic stroke). There is
some evidence that synthetic vitamin E (all-rac-alpha-tocopherol) might
help prevent stroke in male smokers who have high blood pressure and
diabetes.
- Skin disorders.
- Cloudy vision in older people (cataracts).
- Diabetes.
- Esophageal cancer.
- Allergies.
- Chronic fatigue syndrome (CFS).
- Oral cancer.
- Skin cancer.
- Epilepsy.
- Menstrual disorders.
- High blood fat levels.
- Leg cramps.
- Common cold.
- Other conditions.
VITAMIN E Side Effects
& Safety
Vitamin E is LIKELY SAFE
for most healthy people when taken by mouth or applied to the skin. Most people
do not experience any side effects when taking the recommended daily dose,
which is 15 mg.Vitamin E is POSSIBLY UNSAFE if taken in high doses. If you have a condition such as heart disease or diabetes, don’t take doses of 400 IU/day or more. Some research suggests that high doses might increase the chance of death and possibly cause other serious side effects. The higher the dose, the greater the risk of serious side effects.
There is some concern that vitamin E might increase the chance of having a serious stroke called hemorrhagic stroke, which is bleeding into the brain. Some research shows that taking vitamin E in doses of 300-800 IU each day might increase the chance of this kind of stroke by 22%. However, in contrast, vitamin E might decrease the chance of having a less severe stroke called an ischemic stroke.
There is contradictory information about the effect of vitamin E on the chance of developing prostate cancer. Some research suggests that taking large amounts of a multivitamin plus a separate vitamin E supplement might actually increase the chance of developing prostate cancer in some men.
High doses can also cause nausea, diarrhea, stomach cramps, fatigue, weakness, headache, blurred vision, rash, and bruising and bleeding.
Special
Precautions & Warnings:
Angioplasty, a heart procedure: Avoid taking supplements containing vitamin E or other antioxidant vitamins (beta-carotene, vitamin C) immediately before and following angioplasty without the supervision of a health care professional. These vitamins seem to interfere with proper healing.
Low levels of vitamin K (vitamin K deficiency): Vitamin E might worsen clotting problems in people whose levels of vitamin K are too low.
An eye condition called retinitis pigmentosa: All-rac-alpha-tocopherol (synthetic vitamin E) 400 IU seems to speed vision loss in people with retinitis pigmentosa. However, much lower amounts (3 IU) don’t seem to produce this effect. If you have this condition, it’s best to avoid vitamin E.
Bleeding disorders: Vitamin E might make bleeding disorders worse. If you have a bleeding disorder, avoid taking vitamin E supplements.
Head and neck cancer: Don’t take vitamin E supplements in doses of 400 IU/day or more. Vitamin E might increase the chance that cancer will return.
Prostate cancer: There is concern that taking vitamin E might increase the chance of developing prostate cancer. The effect of vitamin E in men who currently have prostate cancer is not clear. But, in theory, taking vitamin E supplements might worsen prostate cancer in men who already have it.
Surgery: Vitamin E might increase the risk of bleeding during and after surgery. Stop using vitamin E at least 2 weeks before a scheduled surgery.
VITAMIN
E Interactions
Moderate Interaction Be cautious with this
combination
- Cyclosporine (Neoral, Sandimmune) interacts with VITAMIN E
- Medications changed by the liver (Cytochrome P450 3A4 (CYP3A4)
substrates) interacts with VITAMIN E
- Medications for cancer (Chemotherapy) interacts with VITAMIN E
- Medications that slow blood clotting (Anticoagulant / Antiplatelet
drugs) interacts with VITAMIN E
- Medications used for lowering cholesterol (Statins) interacts with
VITAMIN E
- Niacin interacts with VITAMIN E
- Warfarin (Coumadin) interacts with VITAMIN E
VITAMIN
E Dosing
The following doses have
been studied in scientific research: BY MOUTH:
- For vitamin E deficiency: a typical dose in adults is RRR-alpha
tocopherol (natural vitamin E) 60-75 IU per day.
- For the movement disorder called tardive dyskinesia:
RRR-alpha-tocopherol (natural vitamin E) 1600 IU daily.
- For improving male fertility: vitamin E 200-600 IU daily.
- For Alzheimer’s disease: up to 2000 IU daily. Combination therapy
of donepezil (Aricept) 5 mg and vitamin E 1000 IU per day has been used
for slowing memory decline in people with Alzheimer’s disease.
- For liver disease called non-alcoholic steatohepatitis: 800 IU
daily in adults has been used; 400-1200 IU daily has been used in
children.
- For early Huntington’s chorea: RRR-alpha-tocopherol (natural
vitamin E) 3000 IU.
- For rheumatoid arthritis pain: vitamin E 600 IU twice daily.
- For preventing nerve damage caused by cisplatin: vitamin E
(alpha-tocopherol) 300 mg daily with each chemotherapy treatment and for
up to 3 months after stopping cisplatin therapy.
- For improving effectiveness of nitrates used for heart disease:
vitamin E 200 mg three times daily.
- To reduce protein in the urine of children with a kidney disease
called focal segmental glomerulosclerosis: vitamin E 200 IU.
- For G6PD deficiency: vitamin E 800 IU daily.
- For premenstrual syndrome (PMS): RRR-alpha-tocopherol (natural
vitamin E) 400 IU daily.
- For painful menstrual periods: vitamin E 200 IU twice or 500 IU
daily starting 2 days before the menstrual period and continuing through
the first 3 days of bleeding.
- For healing the eyes after a surgery called keratectomy: 230 mg
vitamin E (alpha-tocopheryl nicotinate) and vitamin A (retinol palmitate)
25,000 units have been used 3 times daily for 30 days, followed by twice
daily for 2 months.
- For fibrosis caused by radiation: vitamin E 1000 IU daily in
combination with pentoxifylline 800 mg.
- For beta-thalassemia: vitamin E 750 IU daily.
- For preventing sunburn: RRR-alpha-tocopherol (natural vitamin E)
1000 IU in combination with 2 grams of ascorbic acid.
- For preventing high blood pressure during pregnancy
(pre-eclampsia) in high risk women: vitamin E 400 IU with vitamin C 1000
mg daily.
Dosing for vitamin E can be confusing. Current guidelines show recommended dietary allowance (RDA) and upper tolerable limits (UTL) for vitamin E in milligrams. However, most products are still labeled in International Units (IUs).