100mg Trazodone for Dogs Dosage Chart Calculator by Weight

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100mg Trazodone for Dogs Dosage Chart Calculator by Weight

Accurately determine the appropriate dosage of 100mg Trazodone for your dog based on their weight.

Trazodone Dosage Calculator

Enter your dog's weight in pounds (e.g., 50).
Once Daily Twice Daily Select how often the medication is administered.
Anxiety (e.g., vet visits, travel, thunderstorms) Sedation (short-term, pre-visit) Choose the primary reason for using Trazodone.

Typical Trazodone Dosage Chart (100mg)

Dosage Recommendations by Weight and Reason
Dog Weight (lbs) Approx. Dosage Range (mg) – Anxiety Approx. Dosage Range (mg) – Sedation 100mg Pill Split for Anxiety 100mg Pill Split for Sedation
Note: These are general guidelines. Always consult your veterinarian for precise dosing.

Dosage Visualization

Visual comparison of Trazodone dosage by weight for different administration reasons.

{primary_keyword}

100mg Trazodone for dogs dosage chart calculator by weight is a crucial tool for pet owners and veterinarians to ensure safe and effective use of Trazodone, a medication commonly prescribed to manage anxiety and provide short-term sedation in canine companions. Trazodone is an antidepressant and anxiolytic that works by affecting serotonin levels in the brain, leading to a calming effect. This {primary_keyword} calculator helps bridge the gap between a dog's weight and the precise milligram (mg) dosage required, minimizing the risk of under-dosing (leading to ineffectiveness) or over-dosing (leading to adverse effects). Understanding the correct {primary_keyword} is vital for your dog's well-being, especially when they need support during stressful events like vet visits, travel, fireworks, or thunderstorms.

Many pet owners may be confused about how to administer medications accurately. This is where a reliable {primary_keyword} becomes indispensable. It allows for a quick reference based on the dog's weight, providing a range that is generally considered safe and effective. It's important to note that while this tool provides valuable guidance, it is not a substitute for professional veterinary advice. Individual dog metabolism, health conditions, and concurrent medications can all influence the ideal dosage. Therefore, always consult with your veterinarian before starting or adjusting any medication regimen for your dog. The use of a {primary_keyword} simplifies the process of obtaining a starting point for discussion with your vet.

{primary_keyword} Formula and Mathematical Explanation

The calculation behind the 100mg Trazodone for dogs dosage chart calculator by weight is based on established veterinary guidelines for Trazodone administration. The general therapeutic range for Trazodone in dogs varies depending on the intended use: typically lower for anxiety management and higher for pre-procedural sedation. A commonly cited range is between 3.5 mg/lb and 7 mg/lb of body weight.

Derivation Steps:

  1. Determine the appropriate mg/lb range: Based on the 'Reason for Administration' input, a specific mg/lb range is selected.
    • For Anxiety: A lower range, typically 3.5 mg/lb to 5 mg/lb.
    • For Sedation: A higher range, typically 5 mg/lb to 7 mg/lb.
  2. Calculate the lower end of the dosage: Multiply the dog's weight (in pounds) by the lower end of the selected mg/lb range.
  3. Calculate the higher end of the dosage: Multiply the dog's weight (in pounds) by the higher end of the selected mg/lb range.
  4. Determine the average dosage: The average of the lower and higher ends of the calculated dosage range provides the primary recommended dose.
  5. Calculate pill split: Determine how much of a 100mg Trazodone pill is needed to reach the calculated total mg dose. This is done by dividing the total mg dose by 100mg.

Variable Explanations:

Variable Meaning Unit Typical Range
Dog Weight The current weight of the dog. Pounds (lbs) 0.1 – 200+ lbs
Dosage Frequency How many times per day the medication is administered. N/A Once Daily, Twice Daily
Administration Reason The primary medical reason for prescribing Trazodone. N/A Anxiety, Sedation
Lower mg/lb (Anxiety) Minimum recommended Trazodone dosage per pound for anxiety. mg/lb 3.5
Upper mg/lb (Anxiety) Maximum recommended Trazodone dosage per pound for anxiety. mg/lb 5.0
Lower mg/lb (Sedation) Minimum recommended Trazodone dosage per pound for sedation. mg/lb 5.0
Upper mg/lb (Sedation) Maximum recommended Trazodone dosage per pound for sedation. mg/lb 7.0
Total mg per Dose The calculated total milligram dosage for a single administration. mg Varies based on weight and reason
Pill Split (100mg) The fraction or portion of a 100mg Trazodone pill needed for the dose. Fraction of a pill 0.1 – 1.0+

Practical Examples (Real-World Use Cases)

Let's illustrate how the {primary_keyword} calculator works with practical scenarios. These examples demonstrate how weight and the reason for medication influence the dosage calculation.

Example 1: Managing Vet Visit Anxiety

Scenario: Bella is a 40 lb Golden Retriever who experiences significant anxiety during vet visits. Her owner wants to use Trazodone to help calm her before her upcoming annual check-up. The veterinarian suggested using it for anxiety.

Inputs:

  • Dog's Weight: 40 lbs
  • Dosage Frequency: Once Daily (for the pre-visit dose)
  • Reason for Administration: Anxiety

Calculator Output:

  • mg/lb of Body Weight: Between 3.5 – 5 mg/lb
  • Total mg per Dose: Approximately 140 – 200 mg
  • Primary Result: ~170 mg (average of the range)
  • Pill Split (100mg): Approximately 1.4 – 2 pills (meaning 1 full pill and a half of another, or 2 full pills depending on vet's preference)

Interpretation: For Bella's anxiety, the calculator indicates that a dose between 140mg and 200mg is appropriate. The average of 170mg provides a good target. This means Bella would likely need 1.7 of the 100mg Trazodone pills. The veterinarian would likely advise either 1.5 or 2 pills based on Bella's specific history and response. This is a key use of the {primary_keyword} calculator for situational anxiety.

Example 2: Pre-Grooming Sedation

Scenario: Max is a 70 lb Bernese Mountain Dog who gets very stressed during grooming sessions, especially nail trims. The groomer recommends Trazodone for short-term sedation before the appointment. The veterinarian agrees to prescribe it for sedation.

Inputs:

  • Dog's Weight: 70 lbs
  • Dosage Frequency: Once Daily (for the pre-grooming dose)
  • Reason for Administration: Sedation

Calculator Output:

  • mg/lb of Body Weight: Between 5 – 7 mg/lb
  • Total mg per Dose: Approximately 350 – 490 mg
  • Primary Result: ~420 mg (average of the range)
  • Pill Split (100mg): Approximately 3.5 – 4.9 pills (meaning close to 4 pills)

Interpretation: For Max's sedation needs, the calculator suggests a dosage range of 350mg to 490mg. The average dose of 420mg indicates that Max would require about 4.2 of the 100mg Trazodone pills. This highlights how the {primary_keyword} calculator adjusts for higher-dose scenarios like sedation, guiding the owner on the quantity of medication needed to discuss with their vet.

How to Use This {primary_keyword} Calculator

Using the 100mg Trazodone for dogs dosage chart calculator by weight is straightforward and designed for ease of use. Follow these simple steps to get an estimated dosage for your canine friend:

  1. Enter Dog's Weight: In the "Dog's Weight" field, input your dog's current weight accurately in pounds (lbs). This is the most critical factor in determining the correct dosage.
  2. Select Dosage Frequency: Choose whether the medication will be given "Once Daily" or "Twice Daily" from the dropdown menu. While the calculator primarily outputs a per-dose amount, this helps contextualize the total daily potential.
  3. Choose Reason for Administration: Select the primary reason for using Trazodone: "Anxiety" or "Sedation". This selection determines which therapeutic range (mg/lb) the calculator will use, as dosages can differ significantly based on the intended effect.
  4. Click "Calculate Dosage": Once all fields are completed, click the "Calculate Dosage" button. The calculator will process the information and display the results.

How to Read Results:

  • Primary Result (e.g., ~170 mg): This is the average recommended milligram (mg) dose per administration, calculated from the appropriate weight-based range for your selected reason.
  • mg/lb of Body Weight: Shows the therapeutic range used for the calculation (e.g., 3.5 – 5 mg/lb for anxiety).
  • Total mg per Dose: Displays the full calculated range in milligrams.
  • Pill Split (100mg): This indicates how many of the 100mg Trazodone pills your dog would need for a single dose. For instance, '1.7' means one full 100mg pill plus 0.7 of another pill.
  • Dosage Chart: Provides a quick reference for various weights, allowing you to see typical dosages without needing to calculate each time.
  • Dosage Visualization: The chart offers a graphical comparison of dosage needs across different weights and reasons.

Decision-Making Guidance:

The results from this {primary_keyword} calculator are intended as a guide for discussion with your veterinarian. Never administer medication without consulting your vet. They will consider your dog's overall health, age, breed, and any other medications they may be taking to finalize the exact dosage. Use the calculated pill split to understand how to portion the medication if prescribed, but always confirm the exact method (e.g., cutting pills, using liquid formulations) with your vet.

Key Factors That Affect {primary_keyword} Results

While this {primary_keyword} calculator provides a valuable estimate, several factors can influence the actual dosage prescribed by a veterinarian and how a dog responds to Trazodone. Understanding these factors is crucial for comprehensive pet healthcare.

  1. Veterinarian's Professional Judgment: This is paramount. Vets consider a dog's unique medical history, including any pre-existing conditions like kidney or liver issues, heart health, or other behavioral concerns. They might adjust the standard mg/lb range based on these individual assessments.
  2. Dog's Age and Metabolism: Puppies and senior dogs may metabolize medications differently than adult dogs. Older dogs might require lower doses due to slower metabolism, while younger dogs might have different sensitivities.
  3. Severity of Anxiety or Sedation Needed: Even within the same category (anxiety or sedation), the intensity can vary. A dog with mild situational anxiety might do well on the lower end of the range, while a dog experiencing extreme panic might need a dose closer to the higher end, as determined by the vet.
  4. Concurrent Medications: If a dog is taking other prescription medications, especially those affecting the central nervous system or serotonin levels (like other antidepressants or certain pain relievers), Trazodone dosages may need significant adjustment to avoid dangerous interactions or serotonin syndrome.
  5. Formulation of Trazodone: While this calculator focuses on 100mg pills, Trazodone can also be prescribed in liquid form or other strengths. The veterinarian will decide the most appropriate and easiest-to-administer formulation, which can affect how a specific milligram dose is achieved.
  6. Breed Predispositions: Certain breeds may have sensitivities to specific medications. For example, some herding breeds can be more sensitive to sedatives. A knowledgeable veterinarian will take breed-specific factors into account.
  7. Previous Response to Trazodone: If a dog has been on Trazodone before, the vet will consider how they responded to previous dosages – whether it was effective, if there were side effects, and if tolerance has developed.
  8. Diet and Hydration: While not usually a primary factor for Trazodone, general health, diet, and hydration levels can impact a dog's overall system and how they process any medication.

Frequently Asked Questions (FAQ)

Is 100mg of Trazodone too much for a small dog?
It depends entirely on the dog's weight and the reason for administration. 100mg might be a very high dose for a small dog (e.g., under 20 lbs) but appropriate for a larger dog. The mg/lb calculation is key. Always consult your vet.
Can I cut a 100mg Trazodone pill in half?
Many Trazodone pills are scored and can be safely cut. However, always check with your veterinarian or pharmacist to confirm if your specific prescription is designed to be split. The {primary_keyword} calculator shows the approximate pill split needed.
How long does Trazodone take to work for dogs?
Trazodone typically starts working within 1-2 hours of administration. For anxiety, it's often given 1-2 hours before a stressful event. For sedation, the effect is usually felt within this timeframe.
What are the side effects of Trazodone in dogs?
Common side effects include drowsiness, lethargy, vomiting, diarrhea, and increased appetite. Less common but serious side effects can include unsteadiness, disorientation, or paradoxical excitement. Report any concerning side effects to your vet immediately.
Can Trazodone be used long-term for dogs?
Trazodone is often used short-term for situational anxiety or sedation. However, veterinarians may prescribe it for longer periods if necessary, especially for chronic anxiety disorders, often in conjunction with behavioral modification. Long-term use requires veterinary monitoring.
What should I do if my dog is groggy after Trazodone?
Mild grogginess is common, especially at higher doses or if it's the dog's first time. If it's excessive, lasts too long, or interferes with normal functions, contact your veterinarian. They might adjust the dosage or frequency.
Is there a difference between Trazodone for humans and dogs?
The active ingredient (Trazodone hydrochloride) is the same. However, dosages, strengths (like the 100mg focus here), and formulations may differ. Always use Trazodone prescribed specifically for your dog by a veterinarian. Do not use human medication without veterinary guidance.
How do I calculate the exact fraction of a 100mg pill?
If the calculator suggests 1.7 pills, you need 170mg. This means one full 100mg pill plus 0.7 of another pill. If your pill is scored, you would cut the second pill into tenths and use 7 of those pieces, or cut it into halves and thirds and estimate the 0.7. Your vet can demonstrate the best way to split pills accurately.

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Disclaimer: Information provided on this site is for informational purposes only and does not constitute medical advice. Always consult with a qualified veterinarian regarding your pet's health.

var TrazodoneDosage = { dosageRanges: { anxiety: { minMgPerLb: 3.5, maxMgPerLb: 5.0 }, sedation: { minMgPerLb: 5.0, maxMgPerLb: 7.0 } }, pillStrength: 100 // mg }; function getElement(id) { return document.getElementById(id); } function validateInput(value, id, errorMessageId, minValue = 0, maxValue = Infinity) { var errorElement = getElement(errorMessageId); errorElement.style.display = 'none'; if (value === null || value === undefined || value === "") { errorElement.textContent = "This field cannot be empty."; errorElement.style.display = 'block'; return false; } var numValue = parseFloat(value); if (isNaN(numValue)) { errorElement.textContent = "Please enter a valid number."; errorElement.style.display = 'block'; return false; } if (numValue maxValue) { errorElement.textContent = "Value cannot exceed " + maxValue + "."; errorElement.style.display = 'block'; return false; } return true; } function calculateDosage() { var dogWeight = getElement("dogWeight").value; var administrationReason = getElement("administrationReason").value; var dosageFrequency = getElement("dosageFrequency").value; // Not used in core calculation but kept for context var weightError = getElement("weightError"); var reasonError = getElement("reasonError"); var resultDiv = getElement("result"); weightError.style.display = 'none'; reasonError.style.display = 'none'; resultDiv.classList.add('hidden'); if (!validateInput(dogWeight, "dogWeight", "weightError", 0.1, 200)) { return; } if (!administrationReason) { reasonError.textContent = "Please select a reason for administration."; reasonError.style.display = 'block'; return; } var weight = parseFloat(dogWeight); var range = TrazodoneDosage.dosageRanges[administrationReason]; var minMgPerLb = range.minMgPerLb; var maxMgPerLb = range.maxMgPerLb; var minTotalMg = weight * minMgPerLb; var maxTotalMg = weight * maxMgPerLb; var averageTotalMg = (minTotalMg + maxTotalMg) / 2; var pillSplitMin = minTotalMg / TrazodoneDosage.pillStrength; var pillSplitMax = maxTotalMg / TrazodoneDosage.pillStrength; var averagePillSplit = averageTotalMg / TrazodoneDosage.pillStrength; getElement("primaryResultValue").textContent = averageTotalMg.toFixed(1) + " mg"; getElement("primaryResultLabel").textContent = "Approximate single dose for " + administrationReason.replace('_', ' ') + " (based on " + minMgPerLb + "-" + maxMgPerLb + " mg/lb)"; getElement("resultTitle").textContent = "Recommended Dosage for " + weight + " lbs Dog"; getElement("mgPerLbValue").textContent = minMgPerLb + " – " + maxMgPerLb; getElement("totalMgValue").textContent = minTotalMg.toFixed(1) + " – " + maxTotalMg.toFixed(1) + " mg"; getElement("pillSplitValue").textContent = averagePillSplit.toFixed(1) + " pills"; // Average pill split resultDiv.classList.remove('hidden'); updateChart(weight, minTotalMg, maxTotalMg, minTotalMg * 0.8, maxTotalMg * 1.2); // Scale for chart visualization populateTable(parseFloat(dogWeight)); // Update table dynamically // Display formula explanation var formulaText = "The dosage is calculated based on veterinary guidelines, typically ranging from " + minMgPerLb + " to " + maxMgPerLb + " mg per pound (mg/lb) of body weight, depending on the reason for administration. For " + administrationReason.replace('_', ' ') + ", a range of " + minMgPerLb + " to " + maxMgPerLb + " mg/lb is used. The calculator provides the average of this range as the primary recommendation and indicates how many " + TrazodoneDosage.pillStrength + "mg pills are needed."; getElement("result").querySelector('.formula-explanation').textContent = "How it works: " + formulaText; } function resetCalculator() { getElement("dogWeight").value = "50"; // Sensible default weight getElement("dosageFrequency").value = "once_daily"; getElement("administrationReason").value = "anxiety"; getElement("weightError").style.display = 'none'; getElement("frequencyError").style.display = 'none'; getElement("reasonError").style.display = 'none'; getElement("result").classList.add('hidden'); // Clear table and chart getElement("dosageTableBody").innerHTML = ""; var ctx = getElement("dosageChart").getContext('2d'); ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height); // Optionally call calculateDosage() to show defaults calculateDosage(); } function copyResults() { var primaryValue = getElement("primaryResultValue").textContent; var primaryLabel = getElement("primaryResultLabel").textContent; var mgPerLb = getElement("mgPerLbValue").textContent; var totalMg = getElement("totalMgValue").textContent; var pillSplit = getElement("pillSplitValue").textContent; var formulaExp = getElement("result").querySelector('.formula-explanation').textContent; var dogWeightInput = getElement("dogWeight").value; var reasonInput = getElement("administrationReason").value; var textToCopy = "Trazodone Dosage Calculation:\n\n"; textToCopy += "Dog's Weight: " + dogWeightInput + " lbs\n"; textToCopy += "Reason for Administration: " + reasonInput.replace('_', ' ') + "\n\n"; textToCopy += "— Key Results —\n"; textToCopy += "Primary Dosage: " + primaryValue + "\n"; textToCopy += "Dosage Range (mg/lb): " + mgPerLb + "\n"; textToCopy += "Total mg per Dose: " + totalMg + "\n"; textToCopy += "Pill Split (100mg): " + pillSplit + "\n\n"; textToCopy += "Formula Explanation: " + formulaExp + "\n\n"; textToCopy += "Disclaimer: This is an estimated dosage. Always consult your veterinarian for precise medical advice."; navigator.clipboard.writeText(textToCopy).then(function() { // Success feedback (optional) var copyButton = getElement("result").querySelector('button.success'); // Find the copy button within the result section if it existed, or a general one var originalText = copyButton ? copyButton.textContent : "Copy Results"; if (copyButton) copyButton.textContent = "Copied!"; setTimeout(function() { if (copyButton) copyButton.textContent = originalText; }, 2000); }).catch(function(err) { console.error('Failed to copy text: ', err); alert('Failed to copy results. Please copy manually.'); }); } function populateTable(currentWeight) { var tableBody = getElement("dosageTableBody"); tableBody.innerHTML = ""; // Clear previous rows var weightsToDisplay = [5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 120, 150]; if (!weightsToDisplay.includes(currentWeight)) { weightsToDisplay.push(currentWeight); weightsToDisplay.sort(function(a, b) { return a – b; }); } weightsToDisplay.forEach(function(weight) { var anxietyRange = TrazodoneDosage.dosageRanges.anxiety; var sedationRange = TrazodoneDosage.dosageRanges.sedation; var minAnxietyMg = (weight * anxietyRange.minMgPerLb).toFixed(1); var maxAnxietyMg = (weight * anxietyRange.maxMgPerLb).toFixed(1); var minSedationMg = (weight * sedationRange.minMgPerLb).toFixed(1); var maxSedationMg = (weight * sedationRange.maxMgPerLb).toFixed(1); var pillSplitAnxiety = ( (parseFloat(minAnxietyMg) + parseFloat(maxAnxietyMg)) / 2 / TrazodoneDosage.pillStrength ).toFixed(1); var pillSplitSedation = ( (parseFloat(minSedationMg) + parseFloat(maxSedationMg)) / 2 / TrazodoneDosage.pillStrength ).toFixed(1); var row = tableBody.insertRow(); row.innerHTML = ` ${weight} lbs ${minAnxietyMg} – ${maxAnxietyMg} mg ${minSedationMg} – ${maxSedationMg} mg ~${pillSplitAnxiety} pills ~${pillSplitSedation} pills `; }); } function updateChart(currentWeight, currentMinMg, currentMaxMg, baselineMinMg, baselineMaxMg) { var ctx = getElement("dosageChart").getContext('2d'); ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height); // Clear previous chart var weights = []; var baselineAnxietyDosage = []; var baselineSedationDosage = []; var currentAnxietyDosage = []; var currentSedationDosage = []; var weightStep = Math.max(1, Math.round(currentWeight / 10)); for (var w = 5; w <= Math.max(currentWeight * 1.5, 100); w += weightStep) { weights.push(w); var anxRange = TrazodoneDosage.dosageRanges.anxiety; var sedRange = TrazodoneDosage.dosageRanges.sedation; baselineAnxietyDosage.push((w * anxRange.minMgPerLb + w * anxRange.maxMgPerLb) / 2); baselineSedationDosage.push((w * sedRange.minMgPerLb + w * sedRange.maxMgPerLb) / 2); } // Add current weight to data points if not already present if (!weights.includes(currentWeight)) { weights.push(currentWeight); weights.sort(function(a, b) { return a – b; }); var idx = weights.indexOf(currentWeight); baselineAnxietyDosage.splice(idx, 0, (currentWeight * TrazodoneDosage.dosageRanges.anxiety.minMgPerLb + currentWeight * TrazodoneDosage.dosageRanges.anxiety.maxMgPerLb) / 2); baselineSedationDosage.splice(idx, 0, (currentWeight * TrazodoneDosage.dosageRanges.sedation.minMgPerLb + currentWeight * TrazodoneDosage.dosageRanges.sedation.maxMgPerLb) / 2); } // Scale Y-axis var maxVal = Math.max(…baselineAnxietyDosage, …baselineSedationDosage) * 1.2; if (maxVal === 0) maxVal = 100; // Prevent division by zero if data is empty // Draw X and Y axes var chartWidth = ctx.canvas.width; var chartHeight = ctx.canvas.height; var padding = 40; var chartAreaWidth = chartWidth – 2 * padding; var chartAreaHeight = chartHeight – 2 * padding; // Y-axis scale var yMax = Math.ceil(maxVal / 50) * 50; // Round up to nearest 50 if (yMax < 100) yMax = 100; var yStep = yMax / 5; var yLabelInterval = yStep; ctx.font = '12px Arial'; ctx.fillStyle = '#333'; ctx.textAlign = 'right'; for (var i = 0; i <= 5; i++) { var yPos = padding + chartAreaHeight – (i * (chartAreaHeight / 5)); ctx.fillText(Math.round(i * yStep), padding – 10, yPos); ctx.beginPath(); ctx.moveTo(padding, yPos); ctx.lineTo(padding + chartAreaWidth, yPos); ctx.strokeStyle = '#eee'; ctx.stroke(); } // X-axis scale ctx.textAlign = 'center'; ctx.textBaseline = 'top'; var xStepPx = chartAreaWidth / (weights.length – 1); weights.forEach(function(w, index) { var xPos = padding + (index * xStepPx); ctx.fillText(w + ' lbs', xPos, padding + chartAreaHeight + 10); ctx.beginPath(); ctx.moveTo(xPos, padding + chartAreaHeight); ctx.lineTo(xPos, padding + chartAreaHeight – 5); ctx.strokeStyle = '#eee'; ctx.stroke(); }); // Draw Axes Lines ctx.strokeStyle = '#333'; ctx.lineWidth = 1; // Y-axis line ctx.beginPath(); ctx.moveTo(padding, padding); ctx.lineTo(padding, padding + chartAreaHeight); ctx.stroke(); // X-axis line ctx.beginPath(); ctx.moveTo(padding, padding + chartAreaHeight); ctx.lineTo(padding + chartAreaWidth, padding + chartAreaHeight); ctx.stroke(); // Draw Data Series 1: Average Dosage for Anxiety ctx.beginPath(); ctx.strokeStyle = 'rgba(40, 167, 69, 0.8)'; // Success green ctx.lineWidth = 2; weights.forEach(function(w, index) { var xPos = padding + (index * xStepPx); var yPos = padding + chartAreaHeight – (baselineAnxietyDosage[index] / yMax * chartAreaHeight); if (index === 0) { ctx.moveTo(xPos, yPos); } else { ctx.lineTo(xPos, yPos); } }); ctx.stroke(); // Draw Data Series 2: Average Dosage for Sedation ctx.beginPath(); ctx.strokeStyle = 'rgba(0, 74, 153, 0.8)'; // Primary blue ctx.lineWidth = 2; weights.forEach(function(w, index) { var xPos = padding + (index * xStepPx); var yPos = padding + chartAreaHeight – (baselineSedationDosage[index] / yMax * chartAreaHeight); if (index === 0) { ctx.moveTo(xPos, yPos); } else { ctx.lineTo(xPos, yPos); } }); ctx.stroke(); // Add a marker for the current weight's calculated dosage var currentIndex = weights.indexOf(currentWeight); if (currentIndex !== -1) { var currentXPos = padding + (currentIndex * xStepPx); var currentAnxietyY = padding + chartAreaHeight – (baselineAnxietyDosage[currentIndex] / yMax * chartAreaHeight); var currentSedationY = padding + chartAreaHeight – (baselineSedationDosage[currentIndex] / yMax * chartAreaHeight); // Marker for current anxiety dosage ctx.fillStyle = 'rgba(40, 167, 69, 1)'; ctx.beginPath(); ctx.arc(currentXPos, currentAnxietyY, 5, 0, Math.PI * 2); ctx.fill(); ctx.fillStyle = 'rgba(0, 74, 153, 1)'; ctx.beginPath(); ctx.arc(currentXPos, currentSedationY, 5, 0, Math.PI * 2); ctx.fill(); } // Add legend ctx.textAlign = 'left'; ctx.fillStyle = '#333'; ctx.fillText('Anxiety Avg. Dose', padding, padding – 15); ctx.fillStyle = 'rgba(40, 167, 69, 0.8)'; ctx.fillRect(padding + 100, padding – 20, 15, 10); ctx.fillStyle = '#333'; ctx.fillText('Sedation Avg. Dose', padding, padding – 5); ctx.fillStyle = 'rgba(0, 74, 153, 0.8)'; ctx.fillRect(padding + 100, padding – 10, 15, 10); } // Initialize calculator on page load document.addEventListener('DOMContentLoaded', function() { resetCalculator(); // Load with defaults // Add event listeners for inputs to trigger real-time calculation (optional, but good for UX) var inputs = document.querySelectorAll('.loan-calc-container input, .loan-calc-container select'); for (var i = 0; i < inputs.length; i++) { inputs[i].addEventListener('input', function() { // Only calculate if all required fields have values if (getElement("dogWeight").value && getElement("administrationReason").value) { calculateDosage(); } else { getElement("result").classList.add('hidden'); // Hide results if inputs are incomplete } }); } // Initialize FAQ accordions var faqQuestions = document.querySelectorAll('.faq-question'); for (var i = 0; i < faqQuestions.length; i++) { faqQuestions[i].addEventListener('click', function() { var answer = this.nextElementSibling; if (answer.style.display === 'block') { answer.style.display = 'none'; this.classList.remove('active'); } else { answer.style.display = 'block'; this.classList.add('active'); } }); } });

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