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Hiprex (Methenamine)

Prescription medicineOnly Available By Prescription

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What if I find a lower price with another pharmacy?

We guarantee the lowest price on all of our prescription products. If you find your medications cheaper at any other recognized licensed mail order pharmacy, we will not only match their price, we will beat it by 25% of the difference. It is our 125% price match guarantee!

Example: If you find a product on Canada Drugs Direct for $50.00 and find the same product for $40.00 at another mail order pharmacy, we will provide you with a $12.50 discount, bringing your total to $37.50.

To get the discount please make sure to mention the price match to the customer service team when they call to collect payment for your order. Or call toll free at 1-888-904-8467 to place the order through the phone.

Terms & Conditions of Program

  • Guaranteed lowest price is only valid at the time of sale.
  • We will only match the current advertised price.
  • Products must be identical and in stock at the time of placing an order with a licensed mail order pharmacy. They must be an online Canadian pharmacy with an address in Canada.
  • Products must be authentic in brand and size (same manufacturer, same country of manufacture, same pack size, same strength and same quantity).
  • Products must be new. We cannot match the price of any used, short expiry or expired product.
  • Price match can only be issued over the phone with our customer service team. Please note at this time we cannot offer price matching for the products Ozempic or Saxenda.
What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.


Hiprex is a prescription urinary tract infection treatment medication. This antibiotic works to stop the growth of bacteria in urine and makes the user's urine more acidic so that the bacteria causing the infection is eliminated by formaldehyde. Hiprex uses are only for treating bacterial infections in the urinary tract and it is not antibiotic that can be prescribed for different bacterial infections. Individuals taking this medication should understand that it is essential to finish the entirety of the Hiprex medication provided to you in order to fully knock out the infection and prevent it from re-establishing itself.

You can buy Hiprex with a doctor's prescription and your best price on it will be when you order medication online from Canada Drugs Direct.


Your Hiprex dosage will be determined by your doctor based on your age and weight, as well as your current condition and any response to treatment. It is possible that your doctor may also instruct you to have a urine acidity test prior to beginning on the medication, as Hiprex works best to treat urinary tract infections when the patient's urine is more acidic. You may also be instructed to get more vitamin C or drink certain juices like cranberry juice as natural ways to increase urine acidity when treating urinary tract infections.

Medication can be taken with or without food, and it is best to take Hiprex around the same time each day.


The active ingredient in Hiprex is Methenamine.


Tell your doctor if you have any history of liver or kidney problems or dehydration before beginning on Hiprex.

Pregnant or breast-feeding women should only use this medication if their doctor approves it.


There is the possibility of drug interaction risks between Hiprex and other Rx medications, including sulfonamide drugs like sulfamethizole, urinary alkalinizers such as antacids, sodium bicarbonate, potassium or sodium citrate, and carbonic anhydrase inhibitors like acetazolamide. Inform your doctor of all medications and supplements you are currently taking before getting a prescription and proceeding to buy Hiprex.

Side Effects

Hiprex side effects are uncommon, but some users may experience nausea, diarrhea, vomiting, cramps, or lack of appetite. If Hiprex side effects are experienced, then you should discontinue use and speak with your doctor again about urinary tract infection treatment alternatives.

IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.

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