Amlo/val/hctz 10/160/12.5mg Tablets

Manufacturer STRIDES Active Ingredient Amlodipine, Valsartan, and Hydrochlorothiazide(am LOE di peen, val SAR tan, & hye droe klor oh THYE a zide) Pronunciation am LOE di peen, val SAR tan, & hye droe klor oh THYE a zide
WARNING: Do not take if you are pregnant. Use during pregnancy may cause birth defects or loss of the unborn baby. If you get pregnant or plan on getting pregnant while taking this drug, call your doctor right away. @ COMMON USES: It is used to treat high blood pressure.
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Drug Class
Antihypertensive
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Pharmacologic Class
Calcium Channel Blocker (CCB), Angiotensin II Receptor Blocker (ARB), Thiazide Diuretic
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Pregnancy Category
Category D/X
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FDA Approved
Oct 2007
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

This medication is a combination of three drugs used to treat high blood pressure. Amlodipine relaxes blood vessels, valsartan blocks a natural substance that narrows blood vessels, and hydrochlorothiazide is a 'water pill' that helps your body get rid of extra salt and water. Together, they help lower your blood pressure.
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How to Use This Medicine

Taking Your Medication Correctly

To get the most benefit from your medication, follow your doctor's instructions carefully. Read all the information provided to you and follow the instructions closely. You can take this medication with or without food. Continue taking the medication as directed by your doctor or healthcare provider, even if you start to feel well. To establish a routine, take the medication at the same time every day.

Note that this medication may increase the frequency of urination. To minimize sleep disturbances, try to avoid taking the medication too close to bedtime. Unless your doctor advises you to limit fluid intake, drink plenty of non-caffeinated liquids to stay hydrated.

Storing and Disposing of Your Medication

Store the 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. Dispose of unused or expired medications properly. Do not flush them down the toilet or pour them down the drain unless instructed to do so. If you have questions about disposing of medications, consult your pharmacist. You may also want to check if there are drug take-back programs in your area.

What to Do If You Miss 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

  • Take exactly as prescribed, usually once daily with or without food.
  • Do not stop taking this medication without consulting your doctor, even if you feel well.
  • Continue to follow a low-sodium diet as recommended by your doctor.
  • Limit alcohol intake, as it can further lower blood pressure.
  • Engage in regular physical activity and maintain a healthy weight.
  • Avoid potassium supplements or salt substitutes containing potassium unless directed by your doctor.
  • Monitor your blood pressure regularly at home if advised by your doctor.
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Available Forms & Alternatives

Dosing & Administration

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Adult Dosing

Standard Dose: One tablet (10/160/12.5 mg) orally once daily

Condition-Specific Dosing:

initial_therapy: Not recommended as initial therapy for hypertension. Should be used after titration of individual components or when blood pressure is not adequately controlled on dual therapy.
maximum_dose: Amlodipine 10 mg, Valsartan 320 mg, Hydrochlorothiazide 25 mg per day (as individual components, not necessarily in this combination)
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Pediatric Dosing

Neonatal: Not established
Infant: Not established
Child: Not established
Adolescent: Not established
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Dose Adjustments

Renal Impairment:

Mild: No dosage adjustment generally required (CrCl > 30 mL/min)
Moderate: Use with caution; monitor renal function and potassium. Not recommended if CrCl < 30 mL/min due to HCTZ component.
Severe: Contraindicated (CrCl < 30 mL/min or anuria) due to hydrochlorothiazide component.
Dialysis: Contraindicated due to hydrochlorothiazide component.

Hepatic Impairment:

Mild: No dosage adjustment generally required for valsartan or HCTZ. For amlodipine, consider lower doses if severe impairment.
Moderate: Use with caution. Amlodipine dose should not exceed 5 mg daily in moderate hepatic impairment. Valsartan exposure may be increased.
Severe: Not recommended due to lack of studies and potential for increased amlodipine exposure.

Pharmacology

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Mechanism of Action

Amlodipine is a dihydropyridine calcium channel blocker that inhibits the transmembrane influx of calcium ions into vascular smooth muscle and cardiac muscle, leading to peripheral arterial vasodilation and reduction in peripheral vascular resistance. Valsartan is an angiotensin II receptor blocker (ARB) that selectively blocks the binding of angiotensin II to the AT1 receptor in many tissues, including vascular smooth muscle and the adrenal gland, inhibiting the vasoconstrictor and aldosterone-secreting effects of angiotensin II. Hydrochlorothiazide is a thiazide diuretic that inhibits sodium reabsorption in the distal convoluted tubule, leading to increased excretion of sodium, chloride, and water, and to a lesser extent, potassium and magnesium.
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Pharmacokinetics

Absorption:

Bioavailability: Amlodipine: 64-90%; Valsartan: 23% (absolute); HCTZ: 50-60%
Tmax: Amlodipine: 6-12 hours; Valsartan: 2-4 hours; HCTZ: 1-2.5 hours
FoodEffect: Amlodipine: Not affected; Valsartan: Decreased AUC and Cmax by 48% and 59% respectively, but not clinically significant for BP control; HCTZ: Not affected.

Distribution:

Vd: Amlodipine: 21 L/kg; Valsartan: 17 L; HCTZ: 0.8-1.7 L/kg
ProteinBinding: Amlodipine: ~97.5%; Valsartan: ~95%; HCTZ: 40-60%
CnssPenetration: Amlodipine: Limited; Valsartan: Limited; HCTZ: Limited

Elimination:

HalfLife: Amlodipine: 30-50 hours; Valsartan: 6 hours; HCTZ: 5.6-14.8 hours
Clearance: Not available (complex for combination)
ExcretionRoute: Amlodipine: Urine (60% as metabolites, 10% unchanged); Valsartan: Feces (83%), Urine (13%); HCTZ: Urine (95% unchanged)
Unchanged: Amlodipine: ~10%; Valsartan: ~13%; HCTZ: ~95%
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Pharmacodynamics

OnsetOfAction: Amlodipine: Gradual, within hours; Valsartan: Within 2 hours; HCTZ: Within 2 hours
PeakEffect: Amlodipine: 6-12 hours; Valsartan: 4-6 hours; HCTZ: 4 hours
DurationOfAction: Amlodipine: 24 hours; Valsartan: 24 hours; HCTZ: 6-12 hours (overall combination provides 24-hour BP control)

Safety & Warnings

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BLACK BOX WARNING

FETAL TOXICITY: When pregnancy is detected, discontinue Exforge HCT as soon as possible. Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus.
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Side Effects

Serious Side Effects: Seek Medical Help Immediately

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

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 high blood sugar, including:
+ Confusion
+ Feeling sleepy
+ Unusual thirst or hunger
+ Passing urine more often
+ Flushing
+ Fast breathing
+ Breath that smells like fruit
Signs of fluid and electrolyte problems, such as:
+ Mood changes
+ Confusion
+ Muscle pain or weakness
+ Fast or abnormal heartbeat
+ Severe dizziness or passing out
+ Increased thirst
+ Seizures
+ Feeling very tired or weak
+ Decreased appetite
+ Unable to pass urine or change in the amount of urine produced
+ Dry mouth
+ Dry eyes
+ Severe upset stomach or throwing up
Signs of kidney problems, including:
+ Unable to pass urine
+ Change in how much urine is passed
+ Blood in the urine
+ A big weight gain
Signs of liver problems, such as:
+ Dark urine
+ Tiredness
+ Decreased appetite
+ Upset stomach or stomach pain
+ Light-colored stools
+ Throwing up
+ Yellow skin or eyes
Muscle spasm
Chest pain that is new or worse
Restlessness
Swelling in the arms or legs
Stiff muscles, shakiness, or muscle movements that are not normal

Eye Problems:

This medication can cause certain eye problems, which can lead to lasting eyesight loss if left untreated. If you experience any of the following symptoms, contact your doctor right away:

Change in eyesight
Eye pain (usually occurring within hours to weeks of starting this medication)

Skin Cancer Risk:

Rarely, people taking hydrochlorothiazide have developed certain types of skin cancer. To minimize this risk, protect your skin from the sun and follow your doctor's instructions for skin checks. If you notice any changes in your skin, such as:

A change in color or size of a mole
Any new or changing skin lump or growth

contact your doctor right away.

Other Side Effects:

Most people do not experience serious side effects, but some may occur. If you notice any of the following symptoms, contact your doctor or seek medical attention if they bother you or do not go away:

Feeling dizzy, tired, or weak
Headache
Upset stomach
Back pain

This is not a comprehensive list of all possible side effects. 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 online at https://www.fda.gov/medwatch.
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Seek Immediate Medical Attention If You Experience:

  • Severe dizziness or fainting (signs of low blood pressure)
  • Swelling of the face, lips, tongue, or throat (signs of angioedema, seek emergency care)
  • Difficulty breathing or swallowing
  • Yellowing of the skin or eyes (jaundice)
  • Unusual tiredness or weakness
  • Muscle cramps or weakness, irregular heartbeat (signs of electrolyte imbalance)
  • Signs of kidney problems (e.g., decreased urination, swelling in feet/ankles)
  • Signs of high blood sugar (e.g., increased thirst, frequent urination)
  • Signs of gout (e.g., sudden joint pain, swelling, redness)
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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, such as foods or drugs. Be sure to describe the allergic reaction you experienced.
A known sulfa allergy.
Current or planned use of dofetilide.
Presence of kidney disease or liver disease.
Inability to urinate.
Use of a medication containing aliskiren, particularly if you have diabetes or kidney problems.
* Breastfeeding status, as you should not breastfeed while taking this medication.

This list is not exhaustive, and it is crucial to discuss all your medications (prescription, over-the-counter, natural products, and vitamins) and health conditions with your doctor and pharmacist. They will help determine the safety of taking this medication in conjunction with your other treatments and health issues. Never start, stop, or adjust the dosage of any medication without first consulting your doctor.
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Precautions & Cautions

Important Information About Your Medication

It is crucial that you inform all of your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication.

Caution with Daily Activities

Until you know how this medication affects you, avoid driving and other tasks that require alertness. To minimize the risk of dizziness or fainting, stand up slowly after sitting or lying down, and be cautious when climbing stairs.

Monitoring Your Condition

If you have diabetes (high blood sugar), closely monitor your blood sugar levels. Check your blood pressure as directed by your healthcare provider, and have regular blood tests as advised by your doctor.

Interactions with Other Substances

This medication may interfere with certain laboratory tests, so inform all of your healthcare providers and lab personnel that you are taking it. If you are using a salt substitute containing potassium, a potassium-sparing diuretic, or a potassium product, consult with your doctor. Additionally, if you are on a low-salt or salt-free diet, discuss this with your doctor.

Potential Side Effects

It may take several weeks to experience the full effects of this medication. Although rare, new or worsening chest pain can occur after starting or increasing the dose of this medication, which may increase the risk of heart attack, particularly in individuals with severe heart blood vessel disease. Discuss this risk with your doctor.

Over-the-Counter Products and Other Substances

Before using over-the-counter products that may increase blood pressure, such as cough or cold medications, diet pills, stimulants, non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen or naproxen, or certain natural products, consult with your doctor. Also, discuss the use of alcohol, marijuana or other forms of cannabis, or prescription or over-the-counter drugs that may cause drowsiness with your doctor.

Heat and Fluid Loss

Be cautious in hot weather or during physical activity, and drink plenty of fluids to prevent dehydration. If you experience excessive sweating, fluid loss, vomiting, or diarrhea, inform your doctor, as these conditions may lead to low blood pressure.

Interactions with Other Medications

If you take cholestyramine or colestipol, consult with your pharmacist about how to take these medications with your current medication. Be aware of the potential for gout attacks.

Special Considerations

If you have lupus, this medication may cause your condition to become active or worsen. Inform your doctor immediately if you experience any new or worsening symptoms. Liver problems have been associated with this medication, and in some cases, hospitalization has been necessary. Discuss this risk with your doctor.

Age-Related Considerations

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

Overdose Symptoms:

  • Profound hypotension (very low blood pressure)
  • Bradycardia (slow heart rate)
  • Tachycardia (fast heart rate)
  • Dizziness
  • Fainting
  • Electrolyte disturbances (e.g., severe hypokalemia, hyponatremia)
  • Dehydration

What to Do:

Seek immediate medical attention or call Poison Control (1-800-222-1222). Treatment is supportive and symptomatic. May involve IV fluids for hypotension, vasopressors, and monitoring of vital signs and electrolytes.

Drug Interactions

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Contraindicated Interactions

  • Aliskiren (in patients with diabetes or renal impairment due to increased risk of hyperkalemia, hypotension, and renal impairment)
  • Potassium-sparing diuretics (e.g., spironolactone, triamterene, amiloride) and potassium supplements (due to valsartan component, increased risk of hyperkalemia)
  • Lithium (due to valsartan and HCTZ components, increased lithium levels and toxicity)
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Major Interactions

  • NSAIDs (including COX-2 inhibitors): May reduce antihypertensive effect of valsartan and HCTZ, and increase risk of renal impairment and hyperkalemia.
  • Other antihypertensives: Additive hypotensive effects.
  • CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, ritonavir, clarithromycin): May increase amlodipine exposure, leading to increased hypotensive effects.
  • CYP3A4 inducers (e.g., rifampin, St. John's Wort): May decrease amlodipine exposure, leading to reduced efficacy.
  • Digoxin: Increased risk of digoxin toxicity with HCTZ (due to hypokalemia/hypomagnesemia).
  • Corticosteroids: May antagonize the diuretic and antihypertensive effects of HCTZ.
  • Cholestyramine and colestipol resins: May impair absorption of HCTZ.
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Moderate Interactions

  • Antidiabetic agents (oral agents and insulin): HCTZ may decrease glucose tolerance, requiring adjustment of antidiabetic dosage.
  • Muscle relaxants, non-depolarizing: HCTZ may potentiate their effect.
  • Alcohol, barbiturates, or narcotics: May potentiate orthostatic hypotension with HCTZ.
  • Calcium supplements: HCTZ may increase serum calcium levels.
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Minor Interactions

  • Not available

Monitoring

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Baseline Monitoring

Blood Pressure (BP)

Rationale: To establish baseline and guide therapy.

Timing: Prior to initiation

Serum Electrolytes (Potassium, Sodium, Magnesium, Calcium)

Rationale: HCTZ can cause hypokalemia, hyponatremia, hypomagnesemia, and hypercalcemia. Valsartan can cause hyperkalemia.

Timing: Prior to initiation

Renal Function (BUN, Serum Creatinine, eGFR)

Rationale: To assess baseline renal function, especially important with ARB and HCTZ.

Timing: Prior to initiation

Liver Function Tests (LFTs)

Rationale: To assess baseline hepatic function, especially important for amlodipine and valsartan metabolism.

Timing: Prior to initiation

Serum Uric Acid

Rationale: HCTZ can increase uric acid levels, potentially precipitating gout.

Timing: Prior to initiation

Blood Glucose

Rationale: HCTZ can impair glucose tolerance.

Timing: Prior to initiation

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Routine Monitoring

Blood Pressure (BP)

Frequency: Regularly, e.g., weekly initially, then monthly or as clinically indicated

Target: <130/80 mmHg or individualized target

Action Threshold: If BP remains uncontrolled, consider dose adjustment or alternative therapy. If too low, consider dose reduction.

Serum Electrolytes (Potassium, Sodium)

Frequency: Within 1-2 weeks of initiation/dose change, then every 3-6 months or as clinically indicated

Target: Potassium: 3.5-5.0 mEq/L; Sodium: 135-145 mEq/L

Action Threshold: Significant deviations (e.g., K < 3.0 or > 5.5 mEq/L, Na < 130 mEq/L) require intervention.

Renal Function (BUN, Serum Creatinine, eGFR)

Frequency: Within 1-2 weeks of initiation/dose change, then every 3-6 months or as clinically indicated

Target: Stable within normal limits or patient's baseline

Action Threshold: Significant increase in creatinine (>30% from baseline) or decrease in eGFR requires investigation and potential dose adjustment/discontinuation.

Serum Uric Acid

Frequency: Annually or if symptoms of gout develop

Target: Within normal limits

Action Threshold: Elevated levels may require management.

Blood Glucose

Frequency: Annually or if patient develops symptoms of hyperglycemia

Target: Within normal limits

Action Threshold: Elevated levels may require management.

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Symptom Monitoring

  • Dizziness
  • Lightheadedness
  • Fatigue
  • Peripheral edema (ankles, feet)
  • Muscle cramps or weakness (due to electrolyte imbalance)
  • Unusual thirst or dry mouth
  • Increased urination
  • Signs of hyperkalemia (e.g., palpitations, muscle weakness)
  • Signs of hypokalemia (e.g., muscle cramps, weakness, irregular heartbeat)
  • Signs of angioedema (swelling of face, lips, tongue, throat)

Special Patient Groups

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Pregnancy

Contraindicated in the second and third trimesters of pregnancy due to the risk of fetal injury and death from the valsartan (ARB) and hydrochlorothiazide components. Discontinue as soon as pregnancy is detected.

Trimester-Specific Risks:

First Trimester: Limited data, but ARBs are generally avoided. HCTZ is generally avoided due to potential for fetal/neonatal jaundice, thrombocytopenia, and other adverse effects.
Second Trimester: High risk of fetal injury (renal dysfunction, oligohydramnios, skull hypoplasia, lung hypoplasia, skeletal deformations, death) due to valsartan. HCTZ also carries risks.
Third Trimester: High risk of fetal injury (renal dysfunction, oligohydramnios, skull hypoplasia, lung hypoplasia, skeletal deformations, death) due to valsartan. HCTZ also carries risks (e.g., neonatal jaundice, thrombocytopenia).
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Lactation

Not recommended during breastfeeding. Hydrochlorothiazide is excreted in breast milk and can suppress lactation. Valsartan and amlodipine are also likely excreted in breast milk. Potential for serious adverse effects in the infant.

Infant Risk: Risk of hypotension, electrolyte disturbances, and other adverse effects in the infant. HCTZ may reduce milk supply.
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Pediatric Use

Safety and effectiveness have not been established in pediatric patients. Not recommended for use in this population.

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Geriatric Use

Use with caution. Elderly patients may be more sensitive to the hypotensive effects and may have age-related decreases in renal function. Consider lower starting doses of individual components if initiating therapy, and monitor closely for adverse effects, especially hypotension and electrolyte imbalances.

Clinical Information

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Clinical Pearls

  • This fixed-dose combination is generally reserved for patients whose blood pressure is not adequately controlled on dual therapy with an ARB and a CCB, or an ARB and a diuretic, or for those who require three agents.
  • Always check renal function and electrolytes before initiating and periodically during therapy, especially in patients with pre-existing renal impairment or those on concomitant medications that affect potassium levels.
  • Educate patients about the signs of angioedema and the importance of seeking immediate medical attention if it occurs.
  • Advise patients to report any symptoms of dizziness or fainting, especially when standing up, as this may indicate orthostatic hypotension.
  • Due to the long half-life of amlodipine, the full antihypertensive effect may not be seen for several days to weeks after initiation or dose adjustment.
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Alternative Therapies

  • Other classes of antihypertensives (e.g., ACE inhibitors, beta-blockers, alpha-blockers, direct vasodilators)
  • Individual components taken separately (Amlodipine, Valsartan, Hydrochlorothiazide)
  • Lifestyle modifications (diet, exercise, weight management, stress reduction)
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Cost & Coverage

Average Cost: Varies widely, typically $30-$200+ per 30 tablets
Generic Available: Yes
Insurance Coverage: Tier 1 or Tier 2 (generic), Tier 3 (brand)
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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 guidance. To ensure your safety, never share your medication with others or take someone else's medication. Some medications may come with an additional patient information leaflet, so it's a good idea to check with your pharmacist for more information. If you have any questions or concerns about this medication, don't hesitate to discuss them with your doctor, nurse, pharmacist, or other healthcare provider. 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 details about the medication taken, the amount, and the time it happened.