In humans, where C-cell GIP receptor expression appears to be lower, this effect may be minimal GIP and thyroid blood flow: Some preclinical data suggest GIP influences thyroid gland blood flow, which could theoretically affect hormone production and levothyroxine absorption in patients with remaining thyroid tissue No adverse thyroid effects in trials: In the SURMOUNT and SURPASS clinical trials, tirzepatide did not produce clinically significant changes in thyroid function tests in participants with normal thyroid function The presence of GIP receptors on thyroid tissue is an area of active research
Levocarnitine supplementation at doses above 1,000 mg daily produces modest improvements in body weight, BMI, and fat mass in overweight and obese adults
Propionyl-L-carnitine corrects metabolic and cardiovascular alterations in diet-induced obese mice and improves liver respiratory chain activity
Timing your injection matters
Adjusting dose or administration time usually resolves this
Wang, Z., Zhao, S., Tao, S., Hou, G., Zhao, F., Tan, S., & Meng, Q