Gravol Immediate Release and Long Acting: the dual layer caplet

Brand facts · sold in Canada · Church & Dwight Canada Corp · labels and regulator records read 2026-09-08

What is in each box

What each version changes

The layer split is the product

25 mg immediate plus 75 mg sustained. Nothing else in the Gravol range is built this way, and it is the only reason to pay for this box rather than the 50 mg tablet.

Fewer doses, longer tail

An 8 to 12 hour interval instead of 4 suits a full travel day. It also means the drowsiness the carton warns about has longer to run.

Adults only

The standard 50 mg tablet prints a band for children 6 to 12. This one does not: the carton says it is not recommended under 12.

It replaced the 75 mg capsule

Health Canada lists the old 75 mg Long Acting capsule and caplet as cancelled post market, which is why searches for them find no current product.

The brand, in retail terms

Health Canada lists this product as a tablet in combined release form, DIN 02254409, which is a category no other Gravol box sits in. Gravol describes the design plainly: the top layer dissolves immediately and the bottom layer keeps releasing. The pack sizes are 8 or 24 caplets, against 10, 30 and 80 for the standard Easy to Swallow tablets, so the long acting box is the trip purchase rather than the cupboard purchase.

Where it is sold

Over the counter in Canada, DIN 02254409, listed by Health Canada as a combined release tablet held by Church & Dwight Canada Corp.

• Canada. DIN 02254409, held by Church & Dwight Canada Corp, listed as marketed and scheduled as a non prescription drug.
• Packs of 8 or 24 caplets, per the brand's product page.
• Canada only, so far. The five Gravol products with United States label records are the coated tablet, the liquid filled capsule, the chewables, the Kids chewables and the Kids syrup. This caplet is not one of them.

The ingredient behind the brand

The ingredient is dimenhydrinate, the same one in every other Gravol box except the Ginger line, and our dimenhydrinate page carries what it does and its full caution list. The only thing this box changes is delivery: a quarter of the dose arrives at once and three quarters arrives over the following hours.

Dimenhydrinate, the ingredient monograph →

What the label says about timing

The carton keeps the same head start as the rest of the range, the first dose at least half an hour and preferably 1 to 2 hours before departure, and then stretches the gap between doses to 8 to 12 hours with a daily maximum. That is the practical difference on a long drive or a full day at sea. It is not for children under 12. We do not provide dosing instructions: follow the carton, and ask a pharmacist whether this box suits you.

We don't provide dosing instructions. The exact amount, the schedule, and whether a product suits you are individual decisions. Read the carton, follow its directions, and ask a doctor or pharmacist.

What the carton warns about

• Drowsiness. The carton carries the same warning as the rest of the range against driving or tasks needing mental alertness.
• Excitability, which the carton flags especially in children, though this box is not for anyone under 12.

Who should check with a doctor or pharmacist first

• Not recommended for children under 12. For a younger child the Kids boxes are the labeled option.
• The carton says not to take it if you have glaucoma, chronic lung disease, or difficulty urinating from an enlarged prostate, unless a physician directs it.
• Pregnant or breastfeeding: the carton says not to take it unless a physician directs it.
• Do not take it with other antihistamines, tranquilizers or other sedating drugs without asking a physician.
• The carton says to avoid alcoholic beverages.
• A sustained release layer means a longer tail of drowsiness than a 50 mg tablet. If you have to drive at the other end, raise that with a pharmacist.
• Prolonged use should be on a physician's advice.

Other boxes under this name

• Gravol, the whole range
  All eight dimenhydrinate boxes in one table, with strengths, forms and pack sizes.
• Gravol Kids
  The labeled option for anyone under 12, at 15 mg and 25 mg.
• Gravol Ginger
  The non drowsy line, with no antihistamine in it.

Set against the alternatives

• Bonine vs Gravol
  How a once daily meclizine tablet stacks up against the Canadian dimenhydrinate boxes.

Frequently asked questions

This page is for general educational and informational purposes only. It is not medical advice and is not a substitute for the advice of a qualified healthcare professional. Dizzout is not a medical provider: we are not doctors or pharmacists. The information here is a general summary drawn from sources such as the FDA-approved label and other public health resources, and it may not reflect the most current changes; the official product label is the authoritative source. Whether any medicine is right for you, and how much to take, are individual decisions that depend on your health, age, and other medicines. We do not provide dosing instructions: always read the product label and follow its directions. Talk to your doctor or pharmacist before starting, stopping, or changing any medication, and never disregard or delay professional medical advice because of something you read here. If you think you may have a medical emergency, contact a doctor or your local emergency number immediately.