glp 1 can't poop Be honest… How many of you started a GLP-1 and immediately Googled: “Why haven't I pooped in 3 days?” 😭 You're not crazy. You're not alone. GLP-1s can slow digestion, which is GLP-1RA Essentials in Gastroenterology: Side

Qiu et al., 2023

When a supplement has high bioavailability, your body can use nearly every milligram provided

Studies confirm that ion release (Ca 2+ , F , PO 4 ) at acidic pH (4.5-5.5) is markedly higher than at neutral pH (6.5), a trend sustained even after recharging (Venkataiah et al., 2025)

Niacinamide does not cause the dramatic flush of niacin, so titration to mitigate flushing is usually not necessary

S.KhirasariaR

While calcium responses to the first on step were identical in both protocols, the amplitude of the second pulse, following a short offstep interval, was lower (Fig 6C), in agreement with the experimental results (Fig 4A)