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Colesevelam 625 mg tablet?

See the DrugPatentWatch profile for Colesevelam

Colesevelam 625 mg tablet (brand name Welchol)
Colesevelam is a bile‑acid‑sequestering resin used mainly to manage cholesterol levels and, in some patients, to improve blood‑sugar control.

1. What it does

  • Low‑density lipoprotein (LDL) cholesterol: Colesevelam binds bile acids in the intestines, which forces the liver to pull more cholesterol from the bloodstream to replace them. This reduces LDL (“bad”) cholesterol and can slightly raise HDL (“good”) cholesterol.
  • Type‑2 diabetes: When added to metformin, it can modestly lower fasting plasma glucose and HbA1c, likely by slowing carbohydrate absorption and affecting gut hormones.

2. How to take it

Form Typical dose Instructions
Colesevelam 625 mg tablet 1 tablet twice daily (1 mg BID) Take with a full glass of water, 1–2 hours before or after meals. Avoid taking with other medications or supplements within the same time window, because colesevelam can bind them and reduce absorption.
  • Missed dose: If you’re close to the next scheduled dose, skip the missed one. Do not double‑dose to catch up.
  • Switching from other lipid‑lowering drugs: Discuss with your clinician; often a gradual transition is needed.

3. Common side effects

  • Gastrointestinal: constipation, bloating, gas, abdominal discomfort, nausea.
  • Rare: hypocalcemia (low calcium levels) if you have kidney disease or take high doses of calcium‑based supplements.
  • If you notice severe constipation, abdominal pain, or any allergic reaction (rash, itching, swelling), seek medical help promptly.

4. Things to watch out for

Interaction Why it matters What to do
Antacids, iron, magnesium, zinc, calcium, thyroxine, levothyroxine, warfarin Colesevelam can bind these, reducing their absorption. Separate intake by at least 2–3 hours, or use a different formulation (e.g., liquid) if available.
Other lipid‑lowering agents (statins, fibrates) May increase risk of muscle pain or liver enzyme changes. Your clinician may adjust doses or monitor labs.
Kidney disease Reduced excretion can lead to accumulation and calcium binding. Dose may need adjustment; monitor kidney function.

5. What it’s not for

  • Acute gallstone or bile‑duct obstruction (it can worsen symptoms).
  • Short‑term cholesterol reduction (it works best over weeks to months).
  • Surgery or end‑of‑life care – your doctor will advise.

6. Storage

  • Keep at room temperature, away from moisture and direct sunlight.
  • Do not use past the expiration date.

7. When to talk to your doctor

Situation Why
Uncontrolled cholesterol or diabetes Your target levels may not be reached; dose adjustment may be needed.
New symptoms Severe constipation, abdominal pain, muscle pain, jaundice (yellowing skin/eyes).
Adding or stopping other medications Interactions can alter effectiveness or safety.
Pregnancy or breastfeeding Not recommended without clinician approval.

Bottom line

Colesevelam 625 mg tablets are a handy, non‑steroidal option for people looking to lower LDL cholesterol and, for some, improve glucose control. Take it with water on an empty stomach, keep a few hours between it and other meds, and monitor for GI upset or constipation. Always discuss any new symptoms or medication changes with your healthcare provider.



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