SAFE — No Known Interaction
🟢 SAFE — Levothyroxine and Cat's Claw can be taken together safely.
Evidence level: THEORETICAL
Levothyroxine and Cat's Claw are safe to take together based on current evidence. No adverse interactions reported.
No clinically significant interaction between Levothyroxine and Cat's Claw has been identified in medical literature.
No interaction between Levothyroxine and Cat's Claw has been documented in clinical literature. Even so, always let your doctor and pharmacist know you're taking Cat's Claw — it helps them make better decisions about your care.
Take levothyroxine first thing in the morning on an empty stomach, 30-60 minutes before food. Take all other supplements and medications at least 4 hours later.
Higher risk for: elderly with cardiac conditions, those with adrenal insufficiency, recent thyroid dose adjustments, concurrent calcium/iron/antacid use (absorption interference), or narrow therapeutic index sensitivity.
Monitor thyroid function when combining Levothyroxine with Cat's Claw. Some medications can alter thyroid hormone levels or metabolism. Watch for hypo symptoms (fatigue, weight gain, cold sensitivity, constipation) or hyper symptoms (anxiety, rapid pulse, weight loss, tremors, heat intolerance). Get thyroid levels (TSH, free T4) rechecked 6-8 weeks after starting or stopping the combination. When to seek emergency help: Chest pain, rapid or irregular heartbeat, high fever with confusion, or severe swelling of the neck.
No urgent need to discuss, but always keep your doctor informed of your full supplement and medication list. An up-to-date list helps them make the best treatment decisions.
Safe combination at standard doses. Continue your medication as prescribed. Inform your doctor or pharmacist that you are using both, so they can monitor for any changes over time.
Levothyroxine and Cat's Claw are safe to take together based on current evidence. No adverse interactions reported.
Take levothyroxine first thing in the morning on an empty stomach, 30-60 minutes before food. Take all other supplements and medications at least 4 hours later.
Monitor thyroid function when combining Levothyroxine with Cat's Claw. Some medications can alter thyroid hormone levels or metabolism. Watch for hypo symptoms (fatigue, weight gain, cold sensitivity, constipation) or hyper symptoms (anxiety, rapid pulse, weight loss, tremors, heat intolerance). Get thyroid levels (TSH, free T4) rechecked 6-8 weeks after starting or stopping the combination. When to seek emergency help: Chest pain, rapid or irregular heartbeat, high fever with confusion, or severe swelling of the neck.
Safe combination at standard doses. Continue your medication as prescribed. Inform your doctor or pharmacist that you are using both, so they can monitor for any changes over time.
No urgent need to discuss, but always keep your doctor informed of your full supplement and medication list. An up-to-date list helps them make the best treatment decisions.
Or browse the full interaction database (121,000+ pairs).