Canada Drugs Direct

Visiting from Canada?

Want to save up to 80% on your medications? Signup below to be notified if we open a Canadian Online Pharmacy.

I agree to receive email updates from Canada Drugs Direct

Looking for Call us toll free 1-800-500-2897

Erythrocin (Erythromycin)

Prescription medicineOnly Available By Prescription

Top brand choice

Strength Pack Size Qty
Pack Size

You'll have option to make 4 interest-free payments by credit card once your order is confirmed using

Top Generic choice

Strength Pack Size Qty
Pack Size

You'll have option to make 4 interest-free payments by credit card once your order is confirmed using

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. The must be a member of CIPA (Canadian International Pharmacy Association).
  • 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
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.


Erythrocin (erythromycin) is an antibiotic prescribed to treat different infections. Some of the infections treated include:

  • Acute pelvic inflammatory disease
  • Diptheria
  • Intestinal amebiasis
  • Legionnaires Disease
  • Lower respiratory infections
  • Pertussis
  • Sexually transmitted infections
  • Skin and skin structure infections
  • Upper respiratory infections

Erythromycin works by stopping bacterial growth. It binds to the 50S ribosomal subunit of bacteria, blocking the production of necessary proteins.


There are different formulations of erythromycin tablets that are made with different ingredients.

The standard dosage is based on the amount of "erythromycin base" in the tablet.

The normal dosage is 250-500 mg of erythromycin base every 6 to 12 hours as directed by the doctor. Do not take this medication for longer than prescribed by the doctor.

The directions can be very different depending on the type of infection, so follow the directions from the doctor closely.


The active ingredient in erythrocin is erythromycin.


Erythromycin is a potent inhibitor of the metabolic enzyme CYP3A4. Other drugs that are metabolized by this enzyme can increase to dangerous levels when taking together with erythromycin. Tell your doctor all the medications you are taking before starting erythromycin.

Some examples of drugs that interact with erythromycin include:

  • Antibiotics
  • Anticoagulant medications
  • Antineoplastic agents (chemotherapy)
  • Calcium channel blockers
  • Carbamazepine
  • Cilostazol
  • Cobicistat
  • Colchicine
  • Eplerenone
  • Everolimus
  • Fentanyl
  • Guanfacine
  • Ibrutinib
  • Lurasidone
  • Methadone
  • Sleep medications
  • Statin medications
  • Theophylline

This is not a complete list of drug interactions. Erythromycin reacts with many other medications and your doctor should review your entire list of medications.


Erythromycin should never be taken unless a doctor confirms a bacterial infection. Taking it without a confirmed infection can cause side effects like antibiotic resistance and gastrointestinal side effects.

Erythromycin can cause heart arrhythmias, so tell your doctor if you have a history of this condition.

Tell your doctor if you have a history of liver impairment or liver disease.

Side Effects

The most common side effects of erythromycin include:

  • Abdominal pain
  • Anorexia
  • Convulsions
  • Diarrhea
  • Heart arrhythmias
  • Nausea
  • Pancreatitis
  • Symptoms of hepatitis
  • Vomiting


Erythrocyn [Package insert].Atlanta, GA: Arbor Pharmaceuticals; 2003.

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.

product-reviews Product Reviews