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What Should I Do If I Miss a Dose of Tagamet?

Many people take Tagamet only when they need it. However, for those who take it on a daily basis, if you do not take your dose as scheduled, take your next dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose of Tagamet.


Brand-name prescription Tagamet is no longer being made. Generic prescription Tagamet is available in the following strengths:
  • Cimetidine 300 mg tablets
  • Cimetidine 400 mg tablets
  • Cimetidine 800 mg tablets
  • Cimetidine solution -- 300 mg per 5 mL (300 mg per teaspoonful).
Over-the-counter Tagamet is available as Tagamet HB 200 mg tablets. Tagamet is also available in an injectable form for use in hospitals.

Generic Tagamet

Currently, generic Tagamet tablets, Tagamet solution, and Tagamet HB tablets are licensed for sale.
(Click Generic Tagamet for more information.)
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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