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Generic Prelone ( Prednisolone )
Prelone (prednisolone) is a synthetic adrenocorticosteroid with potent anti-inflammatory and immunosuppressive properties. It is indicated for a wide range of conditions requiring corticosteroid therapy, including allergic disorders, dermatologic diseases, endocrine disorders, gastrointestinal diseases (such as ulcerative colitis), hematologic disorders, neoplastic diseases, nervous system disorders, ophthalmic diseases, renal diseases, respiratory diseases (including asthma), and rheumatologic disorders. Prednisolone works by binding to intracellular glucocorticoid receptors, which then modulate gene transcription to reduce the production of inflammatory mediators such as prostaglandins and leukotrienes, suppress the migration of polymorphonuclear leukocytes, and reverse increased capillary permeability. It has minimal mineralocorticoid activity compared to hydrocortisone.
Usual adult dose: The dosage of prednisolone is highly individualized based on the disease being treated, its severity, and the patient's response. The initial dose generally ranges from 5 mg to 60 mg daily in divided doses, with higher doses reserved for acute, severe conditions. A common initial dose for many inflammatory conditions is 20 mg to 40 mg per day. Once a satisfactory clinical response is achieved, the dose is gradually tapered to the lowest effective maintenance dose, often administered as a single morning dose or on an alternate-day schedule to minimize hypothalamic-pituitary-adrenal (HPA) axis suppression. Abrupt discontinuation after prolonged therapy may precipitate acute adrenal insufficiency; therefore, gradual withdrawal is essential. For acute asthma exacerbations, a typical short course may be 40 mg to 60 mg daily for 5 to 10 days. Doses for children are calculated on the basis of body weight or body surface area.
Dosage form: Oral tablets: 5 mg, 10 mg, 20 mg, and 40 mg. Prednisolone is also available as an oral syrup under the brand name Prelone (prednisolone sodium phosphate, 15 mg per 5 mL) and as an orally disintegrating tablet. The 5 mg tablet is commonly used for dose titration and paediatric dosing.
Onset of action: The anti-inflammatory and immunosuppressive effects begin within hours of oral administration, but the full clinical response for many chronic conditions may require several days of therapy. For acute asthma, improvement in forced expiratory volume may be seen within 6 to 12 hours.
Duration of action: Prednisolone has an intermediate duration of action, with a biological half-life of 18 to 36 hours, allowing for once-daily or twice-daily dosing. Its therapeutic effects persist beyond the plasma elimination half-life due to the genomic mechanisms of action.
Alcohol recommendation: While moderate alcohol consumption is not absolutely contraindicated, alcohol should be used with caution during prednisolone therapy. Corticosteroids increase the risk of gastrointestinal irritation and bleeding, and alcohol can exacerbate this risk. In patients with certain underlying conditions being treated with prednisolone, alcohol may worsen the disease state. Patients should discuss their alcohol intake with their healthcare provider.
Most common side effects: Short-term use may cause fluid retention, increased appetite, weight gain, insomnia, mood changes (including euphoria or depression), headache, and elevated blood glucose. Long-term use, especially at high doses, can lead to more serious effects: osteoporosis, cataracts, glaucoma, Cushingoid features (moon face, buffalo hump, truncal obesity), thinning of the skin, easy bruising, muscle wasting, peptic ulcer disease, impaired wound healing, increased susceptibility to infections, and suppression of the HPA axis. Patients should be monitored for signs of hyperglycemia, particularly those with diabetes mellitus. Live or live-attenuated vaccines should not be administered during high-dose corticosteroid therapy. To reduce gastrointestinal upset, prednisolone should be taken with food or milk. Abrupt withdrawal after extended use may cause fever, myalgia, arthralgia, and potentially life-threatening adrenal crisis.
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Buy Generic Prelone (Prednisolone) without prescription in Canada
At our pharmacy, you can buy Prelone without a prescription, with discreet and anonymous packaging delivered within 5-14 days across Canada.
What is Prelone?
Prelone is a brand of prednisolone, a corticosteroid that suppresses inflammation and calms an overactive immune system. It's used for a long list of conditions: severe allergies, asthma exacerbations, rheumatoid arthritis, lupus, inflammatory bowel disease, certain eye conditions, and a range of autoimmune disorders. Prednisolone is the active metabolite of prednisone. The liver converts prednisone into prednisolone before it does its job. Giving prednisolone directly bypasses that step, which can be useful in patients with liver impairment where the conversion might be sluggish.
Corticosteroids don't cure the underlying disease. They shut down the inflammatory response that causes pain, swelling, and tissue damage. The relief can be dramatic. A person with a severe poison ivy reaction or an acute gout flare can go from miserable to functional within a day. That speed of response is why prednisolone is so widely prescribed, and also why it's easy to underestimate the long-term risks. The drug affects nearly every organ system. The art of using it is to get the inflammation under control and then taper off as quickly as safely possible. When it's used for chronic conditions, the goal becomes finding the lowest dose that controls symptoms.
Prelone is typically an oral liquid formulation, often used for children or adults who have trouble swallowing tablets. Generic prednisolone is available as tablets in 5 mg, 10 mg, 20 mg, and 40 mg strengths. Dosing is highly variable and depends on the condition, its severity, and how the patient responds. A short burst for acute asthma might be 40 to 60 mg per day for 3 to 5 days. A maintenance dose for rheumatoid arthritis might be 5 to 10 mg daily. In severe flares of lupus or vasculitis, doses can go much higher, starting at 60 mg or more per day and tapering over weeks.
Mechanism and Pharmacology
Prednisolone binds to the glucocorticoid receptor inside the cytoplasm of nearly every cell type. Once bound, the receptor complex moves into the nucleus and either activates or represses gene transcription. The anti-inflammatory effects come primarily from transrepression: the drug-receptor complex interferes with transcription factors like NF-kB and AP-1, which turn on the genes for pro-inflammatory cytokines, chemokines, and adhesion molecules. The production of interleukin-1, interleukin-6, tumour necrosis factor-alpha, and a cascade of other signals drops sharply. Fewer inflammatory cells migrate into tissues. Capillary permeability decreases. Lysosomal membranes stabilize. The whole inflammatory response dials down.
The metabolic effects come from transactivation, the turning on of genes involved in gluconeogenesis, fat redistribution, and protein catabolism. This is where the side effects come from: elevated blood sugar, muscle wasting, thinning skin, increased appetite, and the characteristic redistribution of body fat to the face, abdomen, and upper back with prolonged use.
Prednisolone is well absorbed after oral administration, with peak plasma levels in 1 to 2 hours. Bioavailability is high, around 80 to 90 percent. It's moderately protein-bound, mainly to albumin and transcortin. The volume of distribution is about 0.5 to 1 L per kg. It's metabolized in the liver to inactive glucuronide and sulfate conjugates. The half-life is about 2 to 4 hours, but the biological effects last much longer because the changes in gene expression persist after the drug is cleared from plasma. This is why alternate-day dosing works for some patients: the anti-inflammatory effect can be maintained for 48 hours while the hypothalamic-pituitary-adrenal axis gets a day to recover.
How to Use Prelone
Dosing is tailored to the condition and the patient. For acute conditions like an asthma exacerbation or a severe allergic reaction, a short course of 40 to 60 mg per day for 3 to 7 days is common. Tapering isn't usually necessary for courses shorter than a week. For chronic conditions like rheumatoid arthritis or polymyalgia rheumatica, starting doses of 10 to 20 mg daily are common, with slow tapering over weeks or months to the lowest effective maintenance dose, often 5 mg or less per day. Some patients can be maintained on 2.5 mg daily or even 1 mg.
Take the tablets with food. Prednisolone irritates the stomach lining and can cause gastritis or ulceration, especially when combined with NSAIDs. Taking it with a meal reduces that irritation. If you're on a single daily dose, take it in the morning. Cortisol has a natural circadian rhythm, peaking around 8 a.m. Taking prednisolone in the morning mimics that rhythm and minimizes adrenal suppression. If you're on a divided dose schedule, the larger portion goes in the morning.
Don't stop prednisolone abruptly if you've been taking it for more than a week or two. The adrenal glands shut down their own cortisol production when they detect high levels of exogenous steroids. If you stop suddenly, the adrenals can't ramp up fast enough, and you can go into adrenal crisis: weakness, hypotension, nausea, and in severe cases cardiovascular collapse. Tapering gives the adrenal glands time to wake back up. The taper depends on the dose and duration. A patient on 40 mg daily for a month might need a taper over several weeks. A patient on 5 mg daily for years might need months to come off completely.
If you miss a dose, take it as soon as you remember. If it's nearly time for the next dose, skip the missed one. Don't double up. Doubling a steroid dose increases the side effects for that day without any lasting benefit.
Side Effects of Prelone
Side effects depend on dose and duration. Short courses of a few days are generally well tolerated. The most common complaints during a short course are increased appetite, insomnia, mood changes like irritability or euphoria, and fluid retention. Blood sugar goes up, which matters in people with diabetes. These effects are transient and resolve when the course ends.
With longer use, the side effect profile changes. Weight gain, particularly central obesity with a rounded "moon face" and fat accumulation between the shoulders, known as a buffalo hump, develops over weeks to months. The skin thins and bruises easily. Wounds heal slowly. Muscle wasting occurs, especially in the proximal muscles of the thighs and upper arms, making it harder to climb stairs or rise from a chair. Bone density drops. Osteoporosis is one of the most serious long-term complications. Vertebral compression fractures and hip fractures are more common in chronic steroid users. Calcium and vitamin D supplementation, and sometimes bisphosphonates, are used to protect bone.
Cataracts and glaucoma can develop, especially with prolonged use. Regular eye exams are recommended for anyone on prednisolone for more than a few months. Elevated intraocular pressure can occur within weeks in susceptible individuals.
Avascular necrosis of the femoral head or other bones is a less common but devastating complication. The blood supply to the bone is interrupted, and the bone dies. It presents as deep joint pain, often in the hip, and can require joint replacement. The risk is higher with high doses and prolonged use.
Psychiatric effects range from insomnia and anxiety to mania, depression, and psychosis. Patients with a history of mood disorders are more vulnerable. The effects are dose-related and usually reverse when the dose is reduced, but they can be severe enough to require psychiatric intervention.
Adrenal suppression is a predictable consequence of prolonged therapy. After months or years of prednisolone, the adrenal glands atrophy. If the drug is stopped abruptly or the patient undergoes the stress of surgery or infection without an increase in steroid dose, an adrenal crisis can occur. Patients on long-term steroids should carry a steroid alert card and may need parenteral hydrocortisone during emergencies.
High-Risk Groups (Elderly, Pregnancy)
Pregnancy. Prednisolone is pregnancy category C. The placenta has an enzyme, 11-beta-hydroxysteroid dehydrogenase type 2, that inactivates prednisolone to prednisone, reducing fetal exposure. This is an advantage over dexamethasone and betamethasone, which cross the placenta more readily. Prednisolone is the preferred oral corticosteroid during pregnancy for this reason. It's used when necessary for managing severe autoimmune disease or asthma. Untreated maternal disease can be more harmful to the fetus than the drug. The decision is individual, and the lowest effective dose should be used.
Breastfeeding. Prednisolone is excreted into breast milk in small amounts. At maternal doses below 20 mg per day, the amount an infant ingests is considered clinically insignificant. At higher doses, waiting 4 hours after the dose before nursing reduces infant exposure further. Breastfeeding is generally considered compatible with prednisolone use, particularly at lower doses.
Elderly patients are more susceptible to the adverse effects of corticosteroids. Osteoporosis, cataracts, thinning skin, and muscle weakness are all more pronounced. The risk of steroid-induced diabetes is higher. Doses should be as low as possible and used for the shortest duration necessary. Calcium, vitamin D, and sometimes prophylactic bisphosphonates are standard. Blood pressure and blood glucose should be monitored closely.
Children. Prednisolone suppresses growth. Prolonged use or frequent short courses can reduce final adult height. The growth velocity should be monitored in children on long-term therapy. Alternate-day dosing, if feasible, reduces the growth-suppressive effect while maintaining anti-inflammatory efficacy. Inhaled corticosteroids or other steroid-sparing agents should be used whenever possible to minimize systemic steroid exposure.
Diabetes. Prednisolone raises blood glucose by increasing hepatic gluconeogenesis and inducing insulin resistance. In patients with diabetes, blood sugars can rise significantly within hours of a dose. Close glucose monitoring is essential, and doses of insulin or oral hypoglycemics often need adjustment during steroid treatment. The effect is dose-dependent and reverses as the dose is tapered.
Infection risk. Prednisolone suppresses the immune system. The risk of bacterial, viral, and fungal infections increases, and infections can present atypically without the usual signs of inflammation. A fever might be the only sign of a serious infection. Patients on long-term steroids should avoid live vaccines and should receive inactivated vaccines like the flu shot and pneumococcal vaccine. Any sign of infection should be taken seriously and evaluated promptly.
Interaction With Activities (Driving, Alcohol)
Prednisolone does not directly impair driving ability. However, mood changes, insomnia, and fatigue can affect concentration and reaction time. If you're feeling agitated, anxious, or markedly fatigued, use caution. The more practical concern is that if you're on prednisolone for a condition causing pain or weakness, those symptoms themselves may impair driving.
Alcohol and prednisolone both irritate the stomach lining. The combination increases the risk of gastritis and peptic ulceration, especially with chronic use and higher doses. It's not an absolute contraindication, but regular or heavy drinking should be avoided. An occasional drink with food is unlikely to cause harm in most people.
Drug Interactions
Prednisolone interacts with a range of drugs, primarily through additive effects rather than metabolic interactions.
NSAIDs (ibuprofen, naproxen, diclofenac, celecoxib) increase the risk of gastrointestinal bleeding when combined with corticosteroids. Both drugs independently irritate the gastric mucosa. The combination should be used cautiously, and gastroprotection with a proton pump inhibitor or misoprostol is often prescribed.
Vaccines. Live vaccines (MMR, varicella, yellow fever, intranasal influenza) should not be given to patients on immunosuppressive doses of prednisolone. The immune system may not mount an adequate response, and there is a risk of disseminated infection from the vaccine virus. Inactivated vaccines are safe and recommended but may be less effective while on high-dose steroids.
Diuretics, particularly thiazides and loop diuretics, can compound the potassium-wasting effect of prednisolone, leading to hypokalemia. Potassium levels should be monitored in patients on both drugs.
Antidiabetic medications often need dose increases because prednisolone raises blood glucose. Insulin requirements can rise substantially during a steroid course. Close monitoring and adjustment are essential.
Warfarin. Corticosteroids can both increase and decrease the effect of warfarin, but the more common effect is an increase in INR due to a direct effect on the coagulation system and gastric irritation. INR should be monitored more frequently when prednisolone is started or stopped.
Phenytoin, phenobarbital, carbamazepine, and rifampin induce hepatic enzymes that metabolize prednisolone, reducing its efficacy. Higher doses of prednisolone may be needed.
Ketoconazole and other strong CYP3A4 inhibitors can reduce the metabolism of prednisolone, increasing its effects and side effects.
Anticholinesterase drugs used for myasthenia gravis. Prednisolone can cause a transient worsening of muscle weakness when first started. Therapy should be initiated in a hospital setting for these patients.
Alternative Options
Prednisolone is one of many corticosteroids, and the choice among them often comes down to potency, duration of action, and specific clinical context.
Prednisone is the prodrug of prednisolone. It's converted in the liver to prednisolone. For most patients with normal liver function, prednisone and prednisolone are interchangeable at equivalent doses. Prednisone is more commonly prescribed as tablets in North America because it's slightly less expensive and widely available.
Methylprednisolone (Medrol) is slightly more potent, with less mineralocorticoid effect. It causes less sodium retention and potassium wasting than prednisolone at equivalent anti-inflammatory doses. It's often used in high-dose intravenous pulses for acute flares of multiple sclerosis or lupus.
Dexamethasone is long-acting and highly potent, with essentially no mineralocorticoid activity. It crosses the placenta well, so it's used for fetal lung maturation in preterm labour, not for chronic maternal disease. It's also used in cerebral edema and certain oncology protocols. Its long half-life makes it unsuitable for alternate-day therapy.
Budesonide is an oral corticosteroid with high first-pass metabolism, designed for inflammatory bowel disease affecting the terminal ileum and right colon. It has fewer systemic side effects than prednisolone but is more expensive and limited to specific indications.
Steroid-sparing agents are used to reduce or eliminate the need for long-term corticosteroids. Methotrexate, azathioprine, mycophenolate mofetil, cyclophosphamide, and biologic agents like rituximab or tocilizumab all allow lower prednisolone doses in autoimmune disease. In asthma, inhaled corticosteroids and biologics like omalizumab or mepolizumab reduce the need for oral steroid bursts.
INN, Brand Names, and Classification in Canada
INN (International Nonproprietary Name): Prednisolone
Available brand names in Canada: Prelone (oral solution), Pediapred (oral solution), and generic prednisolone tablets
ATC code: H02AB06
Forms and strengths: Tablets 5 mg, 10 mg, 20 mg, 40 mg; Oral solution 5 mg per 5 mL, 15 mg per 5 mL
Manufacturers: Various generic manufacturers including Teva Canada Limited, Apotex Inc., Sandoz Canada Inc., and Sanis Health Inc.
Registration status in Canada: Registered
Classification: Prescription (Rx)
Making the Most of Prednisolone
Prednisolone is a powerful tool. It's not a maintenance medication for minor complaints. For a severe poison ivy reaction, a 5-day course can be transformative. For a lupus flare, it can be life-saving. The key is using it with respect for its long-term consequences. The lowest effective dose for the shortest possible time. That mantra exists for a reason. Every patient on prednisolone for more than a few weeks should have a clear plan for tapering and a discussion about osteoporosis prevention, blood sugar monitoring, and infection risk.
Prelone oral liquid is especially useful for children and patients who can't swallow tablets. The taste is acceptable, and the graduated dropper allows precise dosing down to small amounts. Tablets are more convenient for adults on stable chronic doses. 5 mg tablets allow fine dose adjustments. 10 mg, 20 mg, and 40 mg strengths are used for higher dose regimens, often split throughout the day or taken as a single morning dose depending on the protocol.
Prednisolone is legally classified as prescription-only in Canada. However, through our pharmacy, you can purchase Prelone without a prescription and receive it in discreet packaging anywhere across the country.
Frequently Asked Questions
How fast does prednisolone work?
It depends on the condition. For acute allergic reactions, improvement can begin within hours. For inflammatory arthritis, pain and stiffness often improve within 24 to 48 hours. For chronic autoimmune conditions, the full anti-inflammatory effect may take several days to build up.
Can I take prednisolone long-term?
Long-term use is sometimes necessary for controlling chronic autoimmune diseases, but it carries significant risks: osteoporosis, cataracts, diabetes, weight gain, and increased infections. When used long-term, the dose should be as low as possible, and steroid-sparing medications should be considered.
Why do I need to taper off prednisolone?
Your adrenal glands stop producing their own cortisol when you take exogenous steroids. If you stop suddenly, your body can't compensate, and you can develop adrenal insufficiency, which can be life-threatening. Tapering gives your adrenal glands time to resume normal function.
What's the difference between prednisolone and prednisone?
Prednisone is converted by the liver into prednisolone, which is the active drug. For most people, they're interchangeable. Prednisolone is preferred in patients with severe liver disease because the conversion step is bypassed.
Can I drink alcohol while taking prednisolone?
Occasional moderate drinking with food is generally acceptable for short courses. Chronic heavy drinking increases the risk of stomach ulcers and can worsen bone loss, both of which are already concerns with steroid therapy. It's wise to limit alcohol.
Will prednisolone affect my mood?
It can. Some people feel energized or euphoric. Others become irritable, anxious, or depressed. Insomnia is common. These effects are dose-related and usually resolve as the dose is lowered. If mood changes are severe, talk to your doctor. Don't stop the drug abruptly.
Delivery Information Across Canada
We ship Prelone and generic prednisolone to all provinces and territories. Delivery times vary depending on how remote your location is:
- Ontario (Toronto, Ottawa, Mississauga): 5 to 7 days
- Quebec (Montreal, Quebec City, Laval): 5 to 7 days
- British Columbia (Vancouver, Victoria, Burnaby): 5 to 9 days
- Alberta (Calgary, Edmonton, Red Deer): 5 to 9 days
- Manitoba (Winnipeg, Brandon): 5 to 9 days
- Saskatchewan (Saskatoon, Regina): 5 to 9 days
- Nova Scotia (Halifax, Sydney): 5 to 9 days
- New Brunswick (Moncton, Fredericton): 5 to 9 days
- Newfoundland and Labrador (St. John's, Corner Brook): 7 to 14 days
- Prince Edward Island (Charlottetown): 7 to 14 days
- Yukon, Northwest Territories, Nunavut: 7 to 14 days
All shipments are packed discreetly with no branding or indication of contents on the outside.
| Shipping method | Delivery time | Price | |
Delivery |
14-21 days | 14.95$ | Tracking# available in 4 days |
Delivery |
9-14 days | 30$ | Tracking# available in 2 days |
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