(Phospho-Soda Laxative Grape)
Brand Choices


Oral Liquid


Oral Liquid
Over the Counter Manufactured by Odan Laboratories Ltd.. Product of Canada. Shipped from Canada.

Phoslax Drug Information

Are you paying too much for Phoslax? Save up to 80% when purchasing your prescription drugs from Universal Drugstore. Our prescription service aspires to conveniently provide you with affordable medications at the lowest prices in Canada and internationally.

We’re working with a number of Canadian and international pharmacy partners, all licensed by their qualified governmental regulatory bodies. By collaborating with our partners, we are able to offer a wide range of brand and generic medications at very competitive prices. You can obtain discount prescription drugs through our online pharmacy. Our prices are already up to 80% lower than your local pharmacy. We are committed to providing you with the best service and prices. This is why we’ll match the price of any of our online pharmacy competitors who require a valid prescription.

Order Phoslax at a discount price today!

Why Buy Phoslax from Universal Drugstore?

We are the global leader in online prescription drug savings with almost 20 years of experience supplying prescription and over the counter drugs to our international customers. More than 300,000 international patients have used our service to receive their prescription and over-the-counter medications.

In the past two decades together with our international pharmacy partners we have shipped over 2 million prescription medication orders to our satisfied customers.

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How Long Does It Take to Receive My Phoslax Order?

You can easily place an order on our website in under 5 minutes. First you need to set up an account with us, create a payment method, and send us your prescriptions. Alternatively, you can order by downloading our order form or by placing an order over the phone. Delivery can take approximately 2 weeks to North America, and 4 weeks to other countries.

  • Phoslax Overview

    Phoslax may be used to relieve occasional constipation. However, when treating constipation, you should use milder products (such as stool softeners, bulk-forming laxatives) whenever possible. Talk to your doctor or pharmacist about other treatment options. Your doctor may also prescribe Phoslax (usually along with other products) to clean stool from the intestines before surgery or certain bowel procedures (such as colonoscopy, radiography). Use it only as directed by your doctor. Sodium phosphate is a saline laxative that is thought to work by increasing fluid in the small intestine. It usually results in a bowel movement after 30 minutes to 6 hours. Do not use Phoslax in children younger than 5 years of age unless directed by the doctor.

  • Phoslax Warnings

    Rarely, serious kidney problems have occurred with the use of Phoslax. Heart failure, kidney disease, bowel problems (e.g., blockage, ulcerative colitis), or being older than 55 years can increase the risk. Taking certain medications that can affect the kidneys (see Drug Interactions section) can also increase the risk. If any of these cautions apply to you, talk with your doctor before using Phoslax.

  • How to Use Phoslax

    Read and follow all directions on the product package. If you have any questions, ask your doctor or pharmacist. To improve the taste, Phoslax may be chilled in the refrigerator before use. Do not freeze. Mix your dose in 8 ounces (240 milliliters) of liquid and drink the mixed solution. Since your bowel movements can be very large/watery, drink plenty of clear liquids so that you do not lose too much body water (become dehydrated). If your doctor has directed you to use Phoslax before surgery or a bowel procedure, he or she should tell you how long before the surgery/procedure you should take Phoslax. Follow your doctor's directions closely. After taking the medication, drink plenty of clear liquids as directed by your doctor. Doing so will help prevent serious side effects (e.g., kidney problems, dehydration). Talk with your doctor about types of liquids you can drink before your procedure. Dosage of Phoslax is based on your medical condition, procedure, age, and response to treatment. Do not take more of Phoslax than directed, use Phoslax more often than once in 24 hours, or use Phoslax for more than 3 days unless directed by your doctor. Also, do not use any other laxative products while using Phoslax unless directed by your doctor. Doing so may increase your risk for severe side effects. If you are seeing a doctor for any medical problems, are on a salt-restricted diet, or if you are taking any other medications, do not use Phoslax to treat yourself for constipation without consulting your doctor. Phoslax may cause a condition known as laxative dependence, especially if it has been used regularly for a long time. In such cases, ongoing constipation and loss of normal bowel function may occur. For most people with occasional constipation, a bulk-forming laxative (e.g., psyllium) or a stool softener (e.g., docusate) is a better and safer product. To prevent laxative dependence, consult your doctor if you need to use Phoslax or other laxative products for more than 7 days. Stop using Phoslax and contact your doctor promptly if you do not have a bowel movement within 6 hours of using Phoslax, if you have symptoms of dehydration (see Side Effects section), if you bleed from the rectum, or if you think you may have a serious medical problem.

  • Phoslax Precautions

    Before taking sodium phosphate, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. Phoslax may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using Phoslax, tell your doctor or pharmacist your medical history,serious loss of body water (dehydration), high/low levels of certain minerals in the blood (e.g., potassium, calcium, sodium, phosphate), kidney disease, current stomach/abdominal symptoms (e.g., pain, cramping, persistent nausea/vomiting), bowel problems (e.g., blockage, ulcerative colitis, hemorrhoids), laxative use for constipation in the past week, heart disease (e.g., heart failure, chest pain, irregular heartbeat, edema), liver disease, sodium-restricted diet. Consult your doctor before using Phoslax if you have had a sudden change in bowel habits lasting more than 2 weeks or if you need to use a laxative daily for more than 1 week. These could be symptoms of a serious medical problem. Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). Young children may be more sensitive to the side effects of Phoslax, especially dehydration and kidney problems. Older adults may be more sensitive to the side effects of Phoslax, especially dehydration and kidney problems. During pregnancy, Phoslax should be used only when clearly needed. Discuss the risks and benefits with your doctor. It is not known if Phoslax passes into breast milk. Consult your doctor before breast-feeding.

  • Phoslax Misdose

    Not applicable.

  • Phoslax Interactions

    Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.other drugs that may affect the kidneys (for example, ACE inhibitors such as lisinopril, ARBs such as valsartan, diuretics/"water pills" such as furosemide/hydrochlorothiazide, NSAIDs such as ibuprofen/naproxen). The watery bowel movements from sodium phosphate may cause your body to absorb less of your regular medicines and get less benefit from them. Consult your doctor or pharmacist about how to reduce this effect.

  • Phoslax Side Effects

    What are Phoslax side effects?

    Side effects are physical, mental or emotional symptoms which occur in addition to or outside of the desired effect of a therapeutic treatment such as an over-the-counter or prescribed drug or medication. Side effects from Phoslax may occur at the beginning or at the end of treatment and may also depend on the length of time an individual remains on the treatment. Side effects, also known as adverse effects, are generally more likely to occur when starting treatment. Individuals may also experience side effects from Phoslax as a result of an interaction with other medications.

    Side Effects of Phoslax

    The side effects of Phoslax may vary in number and intensity for many different reasons. Factors such as age, weight, gender and ethnicity may influence the side effects of Phoslax. Also, an individual’s state of general physical health and seriousness of the disease or illness as well as an increase or decrease in dosage may lead to side effects. Further, side effects from Phoslax may also occur as a result of an interaction with certain herbal supplements, foods or drinks.

    Prescription drug side effects can be serious and may cause patients to stop the treatment. However, when side effects from the use of a prescription drug, such as Phoslax, do occur a patient should consult their physician. A physician may prescribe an additional treatment in order to control the symptoms or an adjustment in the dosage may be made. In addition, changes to diet, exercise or other lifestyle activities may help to lessen the side effects of Phoslax.

    By understanding side effects and the factors which may influence the occurrence of side effects patients are empowered to take an active role in their care. Patients who have specific questions about the side effects of Phoslax, or any other medication, should contact their physician. General information about Phoslax and the side effects associated with Phoslax are described in the following:

    Common Phoslax Side Effects


    Less Severe

    • abdominal pain with cramps
    • hyperphosphatemia
    • abdominal distension

    Less Frequent Phoslax Side Effects


    • ulceration of colon
    • hyperkalemia

    Less Severe

    • nausea
    • vomiting
    • dizziness
    • headache disorder

    Rare or Very Rare Phoslax Side Effects


    • hypernatremia
    • hypocalcemia
    • dyspnea
    • acidosis
    • bronchospastic pulmonary disease
    • acute renal failure
    • dehydration
    • kidney disease with reduction in GFR
    • throat constriction
    • angioedema
    • hypersensitivity drug reaction
    • seizure disorder
    • anaphylaxis

    Less Severe

    • dysphagia
    • urticaria
    • paresthesia
    • cardiac arrhythmia
    • pruritus of skin
    • skin rash
  • Phoslax Storage

    Refer to storage information on the package label. If you have any questions about storage, ask your pharmacist. Do not freeze. Do not store in the bathroom. Keep all drug products away from children and pets. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard Phoslax when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.

IMPORTANT DISCLAIMER: All medical content is supplied by a third-party company who is independent from this web site. As such, this web site cannot guarantee the reliability, accuracy, and /or medical efficacy of the information provided. In all circumstances, you should seek the advice of a health professional pertaining to drug, treatment and/or medical condition advice. Note that not all products are shipped by our contracted Canadian pharmacy. This website contracts with dispensaries around the world that ship products directly to our customers. Some of the jurisdiction include but are not limited to United Kingdom, Europe, Turkey, India, Canada, Vanuatu, Mauritius, and USA. The items within your order may be shipped from any one of these jurisdictions depending on the availability and cost of the products at the time you place your order. The products are sourced from these countries as well as others. Please note that the product appearance may vary from actual product received depending on availability.