"How much does bowel prep cost without insurance?"

"Prescription bowel prep kits cost $15–$150 without insurance depending on the brand, with generic polyethylene glycol (PEG) solutions at the low end and brand-name low-volume preps like Suprep or Clenpiq at the high end."

"Is bowel prep covered by insurance?"

"Yes, under the Affordable Care Act, bowel prep is generally covered without cost-sharing when prescribed for a screening colonoscopy, though some insurers require the prep to be filled at an in-network pharmacy or may cover only the generic version at $0 copay."

"Why does the same bowel prep cost different amounts at different pharmacies?"

"Pharmacy cash prices for the same prep product can vary by $30–$80 between locations because prescription prep kits aren't always covered by standard drug discount programs, so it pays to call two or three pharmacies before filling."

ClenPiq and ColPrep Cost Guide: Bowel Prep Prices Compared

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📋 Data from Medicare fee schedules & FAIR Health ✓ Reviewed by board-certified gastroenterologist 🔄 Updated May 2026

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The $110 pharmacy receipt catches a lot of patients off guard. You already paid your colonoscopy copay — why is the prep bottle costing extra? The answer is that bowel prep is a separate prescription, billed through your pharmacy benefit rather than your medical benefit, and the price swings wildly depending on which product your doctor writes and where you fill it.

Bowel Prep Cost by Product

Prep Type	Cash Price (No Insurance)	Typical Insurance Copay
Generic PEG 3350 (Golytely equivalent)	$15 – $40	$0 – $10
Generic split-dose PEG powder	$20 – $50	$0 – $15
Suprep Bowel Prep Kit	$80 – $150	$10 – $50
Clenpiq (liquid, low-volume)	$90 – $160	$10 – $50
Sutab (tablet form)	$100 – $170	$15 – $60

Why the Price Range Is So Wide

Bowel prep sits in an odd spot for insurance billing. The Affordable Care Act requires no-cost coverage for screening colonoscopy itself, and the U.S. Preventive Services Task Force guidance that drives this requirement has been interpreted by many insurers to include the prep needed to complete the exam. But interpretation varies — some plans cover only the cheapest generic option at $0, and charge a standard drug copay if your doctor prescribes a brand-name low-volume kit.

That’s why the same prescription can cost $0 at one pharmacy under one insurance plan, and $120 at another pharmacy for a patient with a high-deductible plan who hasn’t met their deductible yet.

Generic vs. Brand-Name Prep

Generic polyethylene glycol (PEG) solutions — often still called “Golytely” after the original brand — require drinking a full gallon of liquid, which many patients find unpleasant. Newer brand-name options like Suprep, Clenpiq, and Sutab use smaller volumes or tablet forms, which patients tend to tolerate better, but they cost significantly more out of pocket if your insurance doesn’t cover the brand at a low tier.

Ask for the Generic If Cost Is a Concern

If a $100+ prep prescription is a problem, tell your GI office before your appointment — most will happily write for generic PEG 3350, which costs $15–$40 cash and works identically well for bowel cleansing, according to studies published by the American Society for Gastrointestinal Endoscopy comparing prep formulations. The convenience of a lower volume comes at a real price premium that isn’t necessary for a successful exam.

Comparing Pharmacy Prices

Because prep kits aren’t always processed through standard prescription discount cards, cash prices for the identical product can vary by $30–$80 between pharmacies in the same city. Before filling:

Call two or three pharmacies for a cash-price quote
Ask your GI office if they have prep coupons — manufacturers of Suprep, Clenpiq, and Sutab often offer $20–$50 savings cards
Check GoodRx or similar discount tools, which sometimes beat insurance copays for prep products specifically

Insurance Coverage Nuances

Screening colonoscopy: Prep is generally covered at $0 cost-share under ACA preventive care rules, though brand-name products may still carry a copay.

Diagnostic colonoscopy (ordered because of symptoms, not as routine screening): Prep may be subject to your standard pharmacy deductible and copay, since diagnostic procedures don’t always qualify for the same $0 preventive coverage as screening exams. This distinction is explained further in our screening vs. diagnostic colonoscopy cost guide.

Never substitute an over-the-counter laxative regimen for a prescribed bowel prep without talking to your doctor first. Prescription preps are specifically formulated and dosed to clear the entire colon for adequate visualization — an inadequate prep is one of the most common reasons a colonoscopy has to be repeated, doubling your cost and your time off work.

The Bottom Line

Bowel prep costs anywhere from $15 to $170 depending on the product and your insurance, and the difference between generic and brand-name options is almost entirely about convenience, not effectiveness. If cost matters to you, ask for generic PEG — it does the same job for a fraction of the price.

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费用与医疗免责声明：本页所列价格为美国市场估算数据，来源于Medicare收费标准及FAIR Health行业数据库（2025年）。实际费用因保险状态、地区及医疗机构不同而存在差异。 本内容仅供参考，不构成专业医疗建议。请咨询持牌肠胃科医生后再做检查和治疗决定。

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Disclaimer: Cost figures are estimates for US patients based on 2025–2026 published fee schedules, Medicare data, and FAIR Health benchmarks. Actual costs vary by location, provider, plan, and procedure complexity. This site does not provide medical advice. Always verify costs with your provider before scheduling.

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