Lecture 5: Vitamins, Herbals and Minerals Flashcards
Nonprescriptions Medications
- Regulated by FDA Center for Drug Evaluation and research
- held to same standards as prescription medications as far as efficacy, labeling, purity, safety, and stability
Dietary Supplement Health and Education Act (DSHEA)
- Products intended to supplement the diet
- contain at least one dietary ingredient ( amino acid, herb, mineral and/or vitamin
FDA requirements (Supplement Labeling)
- Evidence of safety and good manufacturing practices
- “Supplements facts”
- Name of product and “dietary supplement”
- Net quantity of contents
- Manufacturers, packers, or distributor’s name and address
- Directions of use
- “supplement facts” panel
Dietary Supplement Labeling
- Serving Size
- List of Dietary Supplements
- Amount per Serving Size
- Percent of Daily Value
- Plant’s Scientific Name of Latin Binomial
- Specific Plant part used
Proprietary Blend Label
List of total weight of blend and individual component names in order or predominance
Dietary Supplement Claims
- Health Claim
- Nutrient Claim
- Structure-Function Claim
Health Claim
- Relationship between a substance and resulting reduction in risk of disease or health-related condition
- Requires FDA approval
- Ex “ Diets low in sodium “may” reduce the risk of high blood pressure, a disease associated with many factors
Nutrient Claim
- Relative amount of nutrient/ dietary substance in a product
- Requires FDA approval
- Ex “ fat free”, “reduced sodium”, “no added sugars”
Structure-Function Claim
- Description of how a product may mantain the normal healthy structure of function of the body without discussing a specific disease state
- Does not require FDA approval
- Ex “ supports healthy cholesterol levels”, “promotes the body’s natural immune function
All claims state
“This product is not intended to diagnose, treat, cure, or prevent disease.”
Consumer Protection Act
- Applies to dietary supplements and nonprescription drugs
- Reporting of serious adverse effects to FDA
- Manufacturing reporting (Manufacturers, packers, distributors)
- Voluntary reporting (consumers, health care providers)
Counseling on Dietary Supplements
- Only use for a limited amount of time
- Inform doctors of dietary supplement use
- FDA does not require data on efficacy or safety prior to marketing
- Recommend : products with seal on label
- large, reputable companies
- maintain therapy with the same brand and formulation
Fat Soluble Vitamins
A,D, E
Water Soluble Vitamins
C, B12, B9
Minerals
Calcium, Magnesium and Iron
Herbal
St. John’s Wort, Glucosamine
Vitamin A Ingredients
Alpha-carotene, Beta-carotene, Retinol
Vitamin D Ingredients
Ergocalciferol (D2), Cholecalciferol (D3)
Vitamin E Ingredient
Alpha-tocopherol
Vitamin C Ingredient
Ascorbic Acid
Vitamin B12 Ingredient
Cyanocobalamin
Vitamin B9
Folic Acid
Calcium Compounds
various salts like carbonate, citrate, gluconate
Iron Compounds
various salts like fumarate, gluconate, sulfate
Magnesium Compounds
various salts like oxide, sulfate
Proposed uses for vitamin A
Skin disorders like acne and psoriasis, vision
Proposed uses for vitamin D
Bone formation and calcium regulation
Proposed uses for vitamin E
Cognitive decline (dementia) , eye disorders, heart disease
Proposed uses for vitamin C
Cold prophylaxis (prevention and treatment of common cold), wound healing
Proposed uses for vitamin B12
Cardiovascular disease, fatigue (tiredness)
Proposed uses of vitamin B9
Heart Disease, prevention of neural tube defects (severe birth defects that affect brain and spine)
Proposed uses of calcium
Bone and teeth formation
Proposed uses of iron
Red blood cell production
Proposed uses of magnesium
Leg cramps and migraines
Proposed uses for omega 3 fatty acids
Anti-inflammatory, cardiovascular disease, lowering cholesterol
Proposed uses for St. John’s Wort
Anxiety and Depression
Proposed uses for glucosamine
Osteoarthritis
Adverse effects for vitamin A
Diarrhea, nausea, vomiting
Adverse effects for vitamin D
Constipation, nausea, vomiting
Adverse effects for vitamin E
Increased bleeding risk
Adverse effects for vitamin C
Abdominal cramps, diarrhea, nausea, nephrolithiasis (kidney stones)
Adverse effects for vitamin B12
Arthralgia (joint pain), dizziness, headache
Adverse effects for vitamin B9
Anorexia, confusion, irritability, nausea
Adverse effects of calcium
- Abdominal pain, constipation, flatulence (most common with calcium carbonate)
- Increased risk of nephrolithiasis (kidney stones)
Adverse effects of iron
Black tarry stool, constipation, GI upset
Adverse effects of magnesium
Diarrhea, nausea, vomiting
Adverse effects of omega 3
Fishy aftertaste, upset stomach
Adverse effects of St. John’s Wart
Agitation, dry mouth, insomnia/restlessness, vivid dreams
Adverse effects of glucosamine
Headache, nausea, vomiting
Vitamin A drug interactions
- . Orlistat - decreases vitamin A absorption
- Retinoids/Vitamin A derivatives
- hypervitaminosis
Vitamin D drug interactions
- Many anticonvulsants ( preventing seizures) - increased vitamin D metabolism
- Orlistat - decreased vitamin D absorption
Vitamin E drug interactions
- anticoagulants and antiplatelets - increased bleeding risk
- Orlistat - decreased vitamin E absorption
Vitamin C drug interactions
Iron - increases iron absorption
Vitamin B12 drug interactions
- Antacids/H2 receptor antagonists/proton pump inhibitors - decreased vitamin B12 absorption
- metformin - decreased vitamin B12 absorption
Vitamin B9 drug interactions
Anticonvulsants (anit-seizure)- decreased anticonvulsant levels
Calcium drug interactions
Fluoroquinolone and tetracycline antibiotics - decreased absorption of these antibiotics
Iron drug interactions
- Antacids/H2 receptor antagonists/proton pump inhibitors - decreased iron absorption
- Fluoroquinolone and tetracycline antibiotics - decreased absorption of these antibiotics
- Levothyroxine - decreased absorption of levothyroxine
Magnesium drug interactions
- Fluoroquinolone and tetracycline antibiotics - decreased absorption of these antibiotics
- Levothyroxine - decreased absorption of levothyroxine
Omega 3 drug interactions
NSAIDs and warfarin - increased risk of bleeding
St. John’s Wort Drug Interactions
- ALL antidepressants - reduced efficacy of antidepressants (possible serotonin syndrome)
- Antiretrovirals (ART)- treats HIV- decreased levels of antiretrovirals
- Oral contraceptives - reduced levels of oral contraceptives
- Warfarin - may increase or decrease warfarin levels
Glucosamine drug interactions
anti-diabetic drugs (controls blood glucose levels)- decreased effects of these agents
Vitamin A counseling points
Avoid use in smokers (cancer) and excess vitamin A can have teratogenic ( cause or raise risk of birth effect)effects in pregnancy
Vitamin D Counseling Points
The body forms some Vitamin D naturally when exposed to sunlight
Vitamin E Counseling Points
Swallow capsule whole, do not crush, cut or chew
Vitamin C Counseling Points
- May shorten the duration of the common cold and decrease symptom severity, but not proven to prevent colds.
- Take with food
Vitamin B12 Counseling Points
May cause urine to be bright yellow
Vitamin B9 Counseling Points
All women of childbearing age should take 400 mcg/day (higher doses in pregnancy) to prevent neural tube defects in newborns.
Calcium Counseling Points
- Limit doses to no more than 500mg of elemental calcium
2. Take with food (calcium carbonate)
Iron Counseling Points
- Keep out of reach of children (fatal)
2. Take on an empty stomach to increase absorption
St. John’s Wort Counseling Points
- Do not use to self treat depression or other psychiatric issues
- Do not stop administration abruptly
- May take several weeks for therapeutic effect
Glucosamine Counseling Points
- Use caution with shellfish allergy
2. Requires 4-6 weeks of treatment for benefits to be seen