Estrace 2mg Tablets

Manufacturer ACTAVIS Active Ingredient Estradiol Oral Tablets(es tra DYE ole) Pronunciation ES-tray-ss (for Estrace); es-tra-DYE-ole (for Estradiol)
WARNING: Do not use this drug to prevent heart disease or dementia. A study of women taking an estrogen with a progestin showed a raised chance of heart attack, stroke, blood clot, breast cancer, and dementia. The chance of stroke, blood clot, and dementia was also raised when the estrogen was taken alone. Not all products and doses were studied. It is not known if the same effects may happen with this drug.The chance of endometrial cancer may be raised with the use of estrogen alone in patients with a uterus. Use of a progestin along with estrogen may lower the risk. Call your doctor right away if you have unexplained or long-lasting vaginal bleeding.Use this drug for the shortest time needed at the lowest useful dose. Your doctor will talk with you on a regular basis to see if you need to keep taking this drug. @ COMMON USES: It is used to prevent soft, brittle bones (osteoporosis) after menopause.It is used to prevent or lower the signs of the change of life (menopause).It is used to add estrogen to the body when the ovaries have been taken out or do not work the right way.Rarely, it is used to treat breast or prostate cancers.It may be given to you for other reasons. Talk with the doctor.
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Drug Class
Estrogen
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Pharmacologic Class
Estrogen receptor agonist
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Pregnancy Category
Category X
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FDA Approved
Jan 1975
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

Estrace 2mg tablets contain estradiol, which is a form of estrogen, a female hormone. It is used to treat symptoms of menopause like hot flashes and vaginal dryness, and to prevent bone loss after menopause. It can also be used to treat certain conditions where the body doesn't make enough estrogen.
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How to Use This Medicine

Taking Your Medication

To use this medication correctly, follow your doctor's instructions and read all the information provided. Take your medication at the same time every day. Note that there may be days when you are not scheduled to take this medication. You can take it with or without food, but if it causes stomach upset, take it with food.

Storing and Disposing of Your Medication

Store your medication at room temperature in a dry place, avoiding the bathroom. Keep all medications in a safe location, out of the reach of children and pets. When disposing of unused or expired medication, do not flush it down the toilet or pour it down the drain unless instructed to do so. Instead, check with your pharmacist for guidance on the best disposal method or participate in a local drug take-back program if available.

Missing a Dose

If you miss a dose, take it as soon as you remember. However, if it's close to the time for your next scheduled dose, skip the missed dose and resume your regular dosing schedule. Do not take two doses at the same time or take extra doses to make up for the missed one.
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Lifestyle & Tips

  • Maintain a healthy lifestyle: regular exercise, balanced diet.
  • Quit smoking: Smoking increases the risk of serious cardiovascular events with estrogen use.
  • Limit alcohol intake.
  • Discuss any new or worsening symptoms with your doctor immediately.
  • Attend all scheduled follow-up appointments and screenings (e.g., mammograms, pelvic exams).
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Available Forms & Alternatives

Dosing & Administration

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Adult Dosing

Standard Dose: Dosage varies by indication. For moderate to severe vasomotor symptoms associated with menopause: 1 mg or 2 mg daily. For moderate to severe vulvar and vaginal atrophy associated with menopause: 1 mg or 2 mg daily. For treatment of hypogonadism: 1 mg or 2 mg daily, cyclically.
Dose Range: 0.5 - 2 mg

Condition-Specific Dosing:

Vasomotor Symptoms: 1 mg or 2 mg daily
Vulvar/Vaginal Atrophy: 1 mg or 2 mg daily
Hypogonadism: 1 mg or 2 mg daily, cyclically (e.g., 3 weeks on, 1 week off)
Prevention of Postmenopausal Osteoporosis: 0.5 mg or 1 mg daily (2mg is generally not indicated for this purpose)
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Pediatric Dosing

Neonatal: Not established
Infant: Not established
Child: Not established, except for specific conditions like hypogonadism in adolescent girls (dosing individualized)
Adolescent: For hypogonadism in girls: Initial dose typically 0.5 mg daily, titrated up to 1-2 mg daily, cyclically, as needed for development of secondary sexual characteristics.
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Dose Adjustments

Renal Impairment:

Mild: No specific dose adjustment provided; use with caution.
Moderate: No specific dose adjustment provided; use with caution.
Severe: No specific dose adjustment provided; use with caution.
Dialysis: Not available; use with caution.

Hepatic Impairment:

Mild: Use with caution; estrogens are extensively metabolized by the liver.
Moderate: Use with caution; estrogens are extensively metabolized by the liver. Consider lower doses.
Severe: Contraindicated in severe liver disease due to impaired metabolism and increased risk of adverse effects.
Confidence: Medium

Pharmacology

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Mechanism of Action

Estradiol is the primary estrogen secreted by the human ovary. It binds to estrogen receptors (ERΞ± and ERΞ²) in target tissues, forming a ligand-receptor complex that translocates to the nucleus. This complex then interacts with estrogen response elements (EREs) on DNA, regulating gene transcription and protein synthesis. This leads to the development and maintenance of female secondary sexual characteristics and affects various physiological processes including bone density, lipid metabolism, and the cardiovascular system.
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Pharmacokinetics

Absorption:

Bioavailability: Low (e.g., ~5% for oral estradiol due to significant first-pass metabolism)
Tmax: Oral: 5-8 hours
FoodEffect: Food may slightly decrease the rate but not the extent of absorption.

Distribution:

Vd: Large (e.g., 9.1-12.2 L/kg)
ProteinBinding: Highly protein bound (>95%), primarily to sex hormone-binding globulin (SHBG) and albumin.
CnssPenetration: Limited, but some penetration occurs.

Elimination:

HalfLife: Estradiol: 13-17 hours (terminal half-life after oral administration)
Clearance: Not readily quantifiable due to extensive first-pass metabolism.
ExcretionRoute: Primarily renal excretion of conjugated metabolites; small amount in feces.
Unchanged: <1% (of parent drug)
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Pharmacodynamics

OnsetOfAction: Estrogenic effects may be observed within days to weeks, but full therapeutic effects (e.g., bone density changes) may take months.
PeakEffect: Peak plasma concentrations reached within hours; clinical effects are sustained with daily dosing.
DurationOfAction: Effects persist as long as daily dosing is maintained; physiological effects are long-lasting.
Confidence: Medium

Safety & Warnings

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BLACK BOX WARNING

ESTROGENS AND PROGESTINS SHOULD NOT BE USED FOR THE PREVENTION OF CARDIOVASCULAR DISEASE OR DEMENTIA. The Women's Health Initiative (WHI) study reported increased risks of myocardial infarction, stroke, invasive breast cancer, pulmonary emboli, and deep vein thrombosis in postmenopausal women (50-79 years of age) during 5.2 years of treatment with conjugated equine estrogens (CEE) plus medroxyprogesterone acetate (MPA) relative to placebo. The WHI Memory Study (WHIMS), an ancillary study of WHI, reported an increased risk of probable dementia in postmenopausal women 65 years of age or older during 4 years of treatment with CEE plus MPA relative to placebo. These risks also apply to estrogen-alone therapy, with increased risks of stroke and deep vein thrombosis reported in postmenopausal women (50-79 years of age) during 6.8 years of treatment with CEE alone relative to placebo. The WHIMS ancillary study of WHI reported an increased risk of probable dementia in postmenopausal women 65 years of age or older during 5.2 years of treatment with CEE alone relative to placebo. The WHI study also reported an increased risk of endometrial cancer in a woman with a uterus who uses unopposed estrogens.
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Side Effects

Urgent Side Effects: Seek Medical Help Right Away

Although rare, some people may experience severe and potentially life-threatening side effects while taking this medication. If you experience any of the following symptoms, contact your doctor or seek medical attention immediately:

Signs of an allergic reaction, such as:
+ Rash
+ Hives
+ Itching
+ Red, swollen, blistered, or peeling skin with or without fever
+ Wheezing
+ Tightness in the chest or throat
+ Trouble breathing, swallowing, or talking
+ Unusual hoarseness
+ Swelling of the mouth, face, lips, tongue, or throat
Signs of liver problems, including:
+ Dark urine
+ Tiredness
+ Decreased appetite
+ Upset stomach or stomach pain
+ Light-colored stools
+ Vomiting
+ Yellow skin or eyes
Signs of gallbladder problems, such as:
+ Pain in the upper right belly area, right shoulder area, or between the shoulder blades
+ Yellow skin or eyes
+ Fever with chills
+ Bloating
+ Severe upset stomach or vomiting
Signs of pancreatitis (pancreas problem), including:
+ Severe stomach pain
+ Severe back pain
+ Severe upset stomach or vomiting
Signs of high blood pressure, such as:
+ Severe headache or dizziness
+ Passing out
+ Changes in eyesight
Weakness on one side of the body
Trouble speaking or thinking
Changes in balance
Drooping on one side of the face
Blurred eyesight
Eyesight changes or loss
Bulging eyes
Changes in how contact lenses feel
Breast lump, pain, or soreness
Nipple discharge
Vaginal itching or discharge
Abnormal vaginal bleeding
Depression or other mood changes
Memory problems or loss
Fever
Difficulty urinating or changes in urine output
Pain while urinating

This medication may cause fluid retention, leading to swelling or weight gain. If you experience any of these symptoms, inform your doctor.

Blood Clots and High Calcium Levels

Seek immediate medical attention if you experience signs of a blood clot, such as:

Chest pain or pressure
Coughing up blood
Shortness of breath
Swelling, warmth, numbness, changes in color, or pain in a leg or arm
Trouble speaking or swallowing

High calcium levels can occur in some people with cancer. Contact your doctor right away if you experience signs of high calcium levels, including:

Weakness
Confusion
Fatigue
Headache
Upset stomach or vomiting
Constipation
Bone pain

Other Side Effects

Most people experience no side effects or only mild side effects while taking this medication. However, if you experience any of the following side effects, contact your doctor or seek medical attention if they bother you or persist:

Dizziness or headache
Hair loss
Upset stomach or vomiting
Constipation
Stomach pain or cramps
Bloating
Enlarged or tender breasts
Vaginal bleeding or spotting
Painful periods
Signs of a common cold
Nose or throat irritation
Weight gain or loss
Joint pain
Leg cramps
* Changes in sex interest

This list is not exhaustive. If you have questions or concerns about side effects, contact your doctor. You can also report side effects to the FDA at 1-800-332-1088 or https://www.fda.gov/medwatch.
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Seek Immediate Medical Attention If You Experience:

  • Sudden severe headache, dizziness, or fainting.
  • Sudden vision changes (e.g., partial or complete loss of vision).
  • Sudden chest pain, shortness of breath, or coughing up blood.
  • Pain, swelling, or tenderness in one or both legs.
  • New breast lump or nipple discharge.
  • Unusual vaginal bleeding (e.g., bleeding after menopause, very heavy or prolonged bleeding).
  • Yellowing of the skin or eyes (jaundice), dark urine, or severe abdominal pain (signs of liver problems).
  • Memory loss or confusion (especially in older women).
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Before Using This Medicine

Before Taking This Medication: Important Information to Share with Your Doctor

It is essential to inform your doctor about the following:

Any allergies you have, including allergies to this medication, its components, or other substances. Be sure to describe the allergic reaction and its symptoms.
A history of certain health conditions, such as:
+ Bleeding disorders
+ Blood clots or an increased risk of blood clots
+ Breast cancer
+ Liver problems or liver tumors
+ Heart attack
+ Stroke
+ Tumors that are sensitive to estrogen
Unexplained vaginal bleeding
Pregnancy or suspected pregnancy. Note: This medication should not be taken during pregnancy.

This list is not exhaustive, and it is crucial to discuss all your medications (prescription, over-the-counter, natural products, and vitamins) and health problems with your doctor and pharmacist. They will help determine if it is safe to take this medication with your other medications and health conditions. Do not initiate, stop, or adjust the dosage of any medication without first consulting your doctor.
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Precautions & Cautions

Important Warnings and Cautions

Before taking this medication, inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are using this drug. Your doctor may advise you to stop taking this medication before certain surgical procedures. If you need to stop taking this drug, your doctor will provide guidance on when to resume taking it after your surgery or procedure.

If you will be immobile for extended periods, such as during long trips, bedrest after surgery, or illness, discuss this with your doctor. Prolonged immobility may increase your risk of developing blood clots.

If you have a known allergy to tartrazine (FD&C Yellow No. 5), consult your doctor before taking this medication, as some products may contain this ingredient.

If you have diabetes, closely monitor your blood sugar levels, as this medication may affect them. Additionally, this medication has been associated with increased blood pressure in some individuals. Regularly check your blood pressure as advised by your doctor.

Follow your doctor's recommendations for regular blood tests and bone density checks. It is also essential to undergo regular breast exams and gynecology check-ups, as well as perform breast self-exams as instructed by your doctor.

The risk of certain side effects, such as heart attack, stroke, breast cancer, ovarian cancer, and others, may vary depending on factors like the duration of estrogen use, whether it is taken with or without a progestin, and other individual factors. Discuss the benefits and risks of using this medication with your doctor.

Be aware that this medication has been linked to high triglyceride levels. If you have a history of elevated triglycerides, inform your doctor.

This medication may cause dark skin patches on your face, so it is essential to avoid sun exposure, sunlamps, and tanning beds. Use sunscreen and wear protective clothing and eyewear to minimize sun exposure.

As this medication may affect certain laboratory tests, inform all your healthcare providers and lab personnel that you are taking this drug.

To minimize the risk of heart disease, avoid smoking. If you smoke, discuss quitting strategies with your doctor. Limit your alcohol consumption, and if you regularly drink grapefruit juice or eat grapefruit, consult your doctor.

For optimal effectiveness, use this medication in conjunction with calcium and vitamin D supplements, as well as weight-bearing exercises like walking or physical therapy. Adhere to the diet and exercise plan recommended by your doctor.

In rare cases, this medication may affect growth in children and teenagers. If you are a parent or guardian of a child or teenager taking this medication, discuss the need for regular growth checks with their doctor.

If you are 65 years or older, use this medication with caution, as you may be more susceptible to side effects.

If you are breastfeeding, consult your doctor to discuss any potential risks to your baby.
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Overdose Information

Overdose Symptoms:

  • Nausea
  • Vomiting
  • Breast tenderness
  • Abdominal pain
  • Drowsiness/fatigue
  • Withdrawal bleeding (in females)

What to Do:

There is no specific antidote. Treatment is symptomatic and supportive. Contact a poison control center (1-800-222-1222) or seek emergency medical attention immediately.

Drug Interactions

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Contraindicated Interactions

  • Aromatase inhibitors (e.g., anastrozole, letrozole) - concurrent use would counteract their mechanism of action.
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Major Interactions

  • CYP3A4 inducers (e.g., Rifampin, Carbamazepine, Phenytoin, Phenobarbital, St. John's Wort) - may significantly decrease estradiol levels, reducing efficacy.
  • CYP3A4 inhibitors (e.g., Ketoconazole, Itraconazole, Ritonavir, Clarithromycin, Erythromycin, Grapefruit juice) - may increase estradiol levels, increasing risk of adverse effects.
  • Thyroid hormone replacement (e.g., Levothyroxine) - Estrogens can increase thyroid-binding globulin (TBG), leading to increased bound thyroid hormone and potentially requiring an increased dose of thyroid hormone.
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Moderate Interactions

  • Corticosteroids (e.g., Prednisone) - Estrogens may decrease the clearance of corticosteroids, leading to increased corticosteroid effects and toxicity.
  • Oral anticoagulants (e.g., Warfarin) - Estrogens may decrease the anticoagulant effect of warfarin, requiring dose adjustments.
  • Fluvoxamine - May increase estradiol levels.
  • Lamotrigine - Estrogens may decrease lamotrigine levels, potentially leading to loss of seizure control.
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Minor Interactions

  • Not specifically identified as clinically significant minor interactions for oral estradiol.

Monitoring

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Baseline Monitoring

Complete medical history and physical examination

Rationale: To identify contraindications, risk factors (e.g., cardiovascular disease, breast cancer), and establish baseline health status.

Timing: Prior to initiation of therapy

Blood pressure

Rationale: Estrogens can affect blood pressure.

Timing: Prior to initiation of therapy

Breast examination and mammography

Rationale: To screen for pre-existing breast conditions and establish baseline for breast cancer surveillance.

Timing: Prior to initiation of therapy, as appropriate for age and risk factors

Pelvic examination and Pap test

Rationale: To screen for pre-existing gynecological conditions and establish baseline for endometrial cancer surveillance.

Timing: Prior to initiation of therapy, as appropriate for age and risk factors

Lipid profile (cholesterol, triglycerides)

Rationale: Estrogens can affect lipid metabolism.

Timing: Prior to initiation of therapy

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Routine Monitoring

Annual physical examination, including blood pressure

Frequency: Annually

Target: Normal for age

Action Threshold: Significant changes or hypertension development

Annual breast examination and mammography

Frequency: Annually (or as per national guidelines)

Target: No suspicious findings

Action Threshold: New lumps, pain, or suspicious mammogram findings

Annual pelvic examination and Pap test

Frequency: Annually (or as per national guidelines)

Target: No suspicious findings

Action Threshold: Abnormal bleeding, pain, or suspicious Pap test findings

Lipid profile

Frequency: Periodically, as clinically indicated

Target: Optimal levels

Action Threshold: Significant adverse changes

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Symptom Monitoring

  • Signs and symptoms of venous thromboembolism (VTE) such as leg pain, swelling, sudden chest pain, shortness of breath.
  • Signs and symptoms of stroke (e.g., sudden severe headache, vision changes, weakness/numbness on one side of body, speech difficulty).
  • Signs and symptoms of myocardial infarction (e.g., chest pain, discomfort, shortness of breath, pain in arm/back/neck/jaw).
  • New breast lumps or changes, nipple discharge.
  • Abnormal vaginal bleeding (e.g., postmenopausal bleeding, prolonged or heavy bleeding).
  • Signs of liver dysfunction (e.g., jaundice, dark urine, abdominal pain).
  • Changes in vision (e.g., sudden partial or complete loss of vision, proptosis, diplopia).

Special Patient Groups

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Pregnancy

Contraindicated during pregnancy (Pregnancy Category X). Estrogen use during pregnancy is associated with an increased risk of birth defects and should not be used.

Trimester-Specific Risks:

First Trimester: Increased risk of birth defects, particularly cardiovascular and limb defects, if exposure occurs during critical periods of organogenesis.
Second Trimester: Not indicated; continued exposure could lead to adverse fetal effects.
Third Trimester: Not indicated; continued exposure could lead to adverse fetal effects.
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Lactation

Not recommended during lactation (Lactation Risk L4). Estrogens can decrease the quantity and quality of breast milk and are excreted into breast milk, potentially affecting the infant.

Infant Risk: Potential for adverse effects on the infant (e.g., feminization, jaundice) and reduction in milk supply.
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Pediatric Use

Generally not indicated for pediatric use, except for specific conditions like hypogonadism in adolescent girls. Safety and efficacy in pre-pubertal children have not been established. Use in children should be under the guidance of a specialist.

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Geriatric Use

Increased risk of stroke, deep vein thrombosis, and probable dementia in women 65 years of age or older. Use the lowest effective dose for the shortest duration consistent with treatment goals. Careful risk-benefit assessment is crucial.

Clinical Information

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Clinical Pearls

  • Estradiol is the most potent natural estrogen. Oral administration undergoes significant first-pass metabolism, leading to lower bioavailability compared to transdermal forms.
  • Always use the lowest effective dose for the shortest duration consistent with treatment goals, especially for menopausal hormone therapy, due to associated risks.
  • For women with an intact uterus, a progestin must be co-administered with estradiol to reduce the risk of endometrial hyperplasia and cancer.
  • Patients should be educated on the signs and symptoms of serious adverse events (e.g., VTE, stroke, MI, breast cancer) and instructed to seek immediate medical attention if they occur.
  • Regular follow-up, including physical exams and appropriate screenings (mammograms, pelvic exams), is crucial during estrogen therapy.
  • Consider non-hormonal alternatives for menopausal symptoms or osteoporosis prevention, especially in patients with contraindications or high-risk profiles.
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Alternative Therapies

  • For vasomotor symptoms: SSRIs/SNRIs (e.g., paroxetine, venlafaxine), gabapentin, clonidine, fezolinetant (Veozah).
  • For vulvar/vaginal atrophy: Vaginal moisturizers and lubricants, ospemifene (Osphena), prasterone (Intrarosa).
  • For osteoporosis prevention: Bisphosphonates (e.g., alendronate), denosumab, teriparatide, raloxifene.
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Cost & Coverage

Average Cost: $20 - $100+ per 30 tablets (for generic estradiol 2mg)
Generic Available: Yes
Insurance Coverage: Tier 1 or 2 for generic; Tier 3 or higher for brand-name Estrace.
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General Drug Facts

If your symptoms or health issues persist or worsen, it is essential to contact your doctor for further evaluation and guidance. To ensure your safety and the effectiveness of your treatment, never share your medication with others or take someone else's medication. Some medications may come with additional patient information leaflets, so it's a good idea to check with your pharmacist for more details. If you have any questions or concerns about your medication, don't hesitate to reach out to your doctor, nurse, pharmacist, or other healthcare provider for clarification. In the event of a suspected overdose, immediately call your local poison control center or seek emergency medical attention. When seeking help, be prepared to provide information about the medication taken, the amount, and the time it happened, as this will help healthcare professionals provide the best possible care.