Diltiazem (Tiadylt) price at Cost Plus Drugs
The cash price for Diltiazem (Tiadylt) at Mark Cuban Cost Plus Drug Company, PBC, without insurance, for each strength they sell. Then see how it compares with what 2027 Medicare plans near you would charge.
Diltiazem (Tiadylt) at Cost Plus Drugs
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Diltiazem HCl Extended Release 120mg Capsule Extended Release$8.26 for 30 · $14.77 for 90 + $5.25 shipping per orderAbout $80 a year, one a day, on 90-day ordersSee this at Cost Plus Drugs ↗
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Diltiazem HCl Extended Release 180mg Capsule Extended Release$10.64 for 30 · $21.92 for 90 + $5.25 shipping per orderAbout $109 a year, one a day, on 90-day ordersSee this at Cost Plus Drugs ↗
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Diltiazem HCl Extended Release 240mg Capsule Extended Release$10.32 for 30 · $20.97 for 90 + $5.25 shipping per orderAbout $105 a year, one a day, on 90-day ordersSee this at Cost Plus Drugs ↗
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Diltiazem HCl Extended Release 360mg Capsule Extended Release$15.92 for 30 · $37.75 for 90 + $5.25 shipping per orderAbout $172 a year, one a day, on 90-day ordersSee this at Cost Plus Drugs ↗
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Diltiazem HCl Extended Release 420mg Capsule Extended Release$23.34 for 30 · $60.03 for 90 + $5.25 shipping per orderAbout $261 a year, one a day, on 90-day ordersSee this at Cost Plus Drugs ↗
Cost Plus Drugs' posted cash prices as of October 26, 2026, including their pharmacy fee. Prices can change; Cost Plus Drugs' website shows the current price. Yearly figures are estimates.
Medicare drug coverage for Diltiazem (Tiadylt) in 2027
On 277 of 286 2027 Medicare drug lists (97%), most often on tier 2.
Each Medicare drug plan, and each Medicare Advantage plan with drug coverage, uses a drug list (formulary) that CMS publishes. Being on a plan's list means the plan covers the drug; what you pay depends on the plan's tier, deductible and pharmacy. Counts are from CMS's 2027 formulary files.
Compare with Medicare plans near you
Whether Cost Plus Drugs is lower than a Medicare plan depends on the plan, your other prescriptions and your pharmacy. Enter your ZIP code on the next page to see each 2027 plan's estimated yearly cost for Diltiazem (Tiadylt), next to the Cost Plus price.
Compare with 2027 Medicare plansAbout Diltiazem (Tiadylt) at Cost Plus Drugs
- Drug group: Muscle relaxants
- Brand-name version: Taztia XT, Tiadylt ER. The prices above are for the generic unless a brand name is shown next to the strength.
- Forms sold at Cost Plus Drugs: capsule extended release
- Shipping: $5.25 per order, mailed to you. A prescription is required.
- Insurance: these are cash prices. Bought this way, outside your insurance, a drug generally doesn't count toward a Medicare plan's deductible or yearly out-of-pocket cap.