PAIN

Canvas Inbox Protocol: Students are strictly required to use the Canvas Inbox for all course communication with Dr. Gerber. Standard MWU email should not be used for this course.
Subject Line Requirements: Subject lines must be succinct to ensure efficient responses. An example of an appropriate heading is: "Questions about risks of valerian in food."
Response Timeframe: Dr. Gerber makes every effort to respond to Canvas Inbox messages within $48\,\text{hours}$ .
Office Hours: Recurring office hours are held via Microsoft Teams.
- Schedule: Wednesdays from $12:00\,\text{noon}$ to $12:30\,\text{pm}$ .
- Access: Links for these meetings are provided in the Canvas Announcements section.

Patient Inquiry Management: Apply specific, structured steps when a patient or family member inquires about dietary supplements promoted for pain.
ACR/AF Guideline Knowledge: Recite the 2019 American College of Rheumatology/Arthritis Foundation Guideline recommendations regarding the management of hand, hip, and knee osteoarthritis (OA), specifically regarding glucosamine and chondroitin sulfate.
ESCEO Recommendation: Recite the European Society of Clinical and Economic Aspects of Osteoarthritis (ESCEO) recommendations concerning glucosamine usage.
Clinical Evaluation of Chondroitin Sulfate: Describe the specific risks and benefits associated with chondroitin sulfate.
Clinical Evaluation of Glucosamine Variants: Describe the risks and benefits of both glucosamine sulfate and glucosamine HCl.
Dosing Proficiency: Identify the specific target dose of glucosamine sulfate and calculate the number of tablets required to reach that dose based on varying manufacturer serving sizes.

Primary Agents: The market for pain-related complementary and alternative medicine (CAM) focuses heavily on three substances:
- Glucosamine sulfate.
- Glucosamine HCl.
- Chondroitin sulfate.
Product Ingredients (Example: Kirkland Extra Strength):
- Label Claim: Glucosamine $1500\,\text{mg}$ and Chondroitin $1200\,\text{mg}$ .
- Serving Size: $2\,\text{Tablets}$ .
- Supplement Facts Details per serving:
  - Calories: $10$ .
  - Sodium: $115\,\text{mg}$ (approx. $5\,\%$ Daily Value based on a $2000\,\text{calorie}$ diet).
  - Total Carbohydrate: $3\,\text{g}$ (approx. $1\,\%$ Daily Value).
  - Glucosamine Hydrochloride: $1500\,\text{mg}$ ( $1.5\,\text{g}$ ).
  - Chondroitin Sulfate Sodium: $1200\,\text{mg}$ ( $1.2\,\text{g}$ ).
- Verification: Products may bear the USP Verified mark, indicating the contents match the label and comply with quality standards.

Strong Recommendation For: Tai chi is strongly recommended for patients suffering from knee and/or hip OA.
Conditional Recommendation For:
- Yoga is conditionally recommended for knee OA (noted scarcity of data).
- Chondroitin sulfate is conditionally recommended specifically for hand OA.
Conditional Recommendation Against: Fish oil is conditionally recommended against for patients with knee, hip, and/or hand OA.
Strong Recommendation Against:
- Glucosamine is strongly recommended against for knee, hip, and/or hand OA.
- Chondroitin sulfate is strongly recommended against for knee and/or hip OA.
- Combination products containing both glucosamine and chondroitin sulfate are strongly recommended against for knee and/or hip OA.

Target Dose: The clinical target dose for Glucosamine is $1500\,\text{mg}$ daily.
Glucosamine HCl (Hydrochloride):
- Evidence of benefit is mixed to negative.
- Data shows no benefit specifically for knee osteoarthritis.
Glucosamine Sulfate:
- Efficacy: Oral administration for a minimum of $4\,\text{weeks}$ shows modest benefit in improving pain and function in knee OA.
- Prevention: It does not appear to prevent the onset of osteoarthritis.
- Other Sites: It is currently unclear if benefit extends to other forms of OA outside of the knee.
ESCEO Perspective: The European Society of Clinical and Economic Aspects of Osteoarthritis (ESCEO) strongly recommends using pharmaceutical-grade glucosamine sulfate (as opposed to standard dietary supplement grade).

Cochrane Database Review (2015):
- The review covered randomized trials, though most were categorized as low quality.
- Findings: Chondroitin (either as monotherapy or in combination with glucosamine) showed better results than placebo for pain improvement in short-term studies.
- Magnitude: The observed benefit was characterized as small to moderate.
- Current Status: High-quality studies are still required to fully determine its role in OA treatment.

Duration of Therapy: For Glucosamine sulfate, a minimum trial of at least $4\,\text{weeks}$ at the target dose is required to assess efficacy. If no response is seen after this window, the supplement should be discontinued.
Warfarin Interaction: Glucosamine can increase the anticoagulant effects of warfarin (Coumadin).
- Risk: Potential for increased International Normalized Ratio (INR), leading to a higher risk of bruising and bleeding.
- Literature: Case reports and MedWatch database reviews have documented this significant drug-nutrient interaction.

Step 1: Understand Motivations: Recognize that patient inquiries often stem from a sincere desire for the best possible care. Pharmacists should convey this understanding to build rapport.
Step 2: Provide Honest Interpretation: Offer a scientific interpretation of supporting evidence, including known risks and financial costs. This fosters dialogue rather than immediate dismissal of the patient's interest.
Step 3: Education on DSHEA: Educate the patient on the US Dietary Supplement Health and Education Act, explaining that this law limits the FDA’s ability to test and regulate supplements compared to prescription drugs.
Step 4: Maintain Partnership: Explicitly express a willingness to remain a partner in the patient's medical care, regardless of whether there is an agreement on the use of a particular supplement.

Patient Profile: Sophia, a $70\text{-year-old}$ female.
Chief Complaint: Difficulty getting onto the ground to play with grandkids due to joint stiffness; interested in "Osteo Bi-Flex Triple Strength" based on a friend's recommendation.
Current Medication List:
- HCTZ (Hydrochlorothiazide).
- Lisinopril.
- Alendronate.
Application of Practice Steps:
- Identify Sophia's motivation (maintaining mobility for family interaction).
- Evaluate the supplement (Osteo Bi-Flex) in context of her health and the 2019 ACR guidelines.
- Discuss the lack of regulation under DSHEA.
- Ensure continued medical partnership despite potential differences in supplement interpretation.

Glucosamine-Warfarin Interaction: Pharmacotherapy. 2008;28(4):540–548.
GAIT Trial (Glucosamine/Chondroitin Arthritis Intervention Trial): New England Journal of Medicine. 2006;354(8):795–808.
Glucosamine vs. Acetaminophen: Arthritis & Rheumatism. 2007;56(2):555–567.
Meta-analysis of Preparation Types: Int J Clin Pract. 2013;67(6):585-94.
ESCEO Algorithm: Semin Arthritis Rheum. 2019 Dec;49(3):337-50.
Pseudomedicine and Communication: JAMA. 2019;321(6):543–544.