Best mass gainer in Canada in 2026? PVL Clean Mass Gainer XL for a clean bulk (1,120 cal, 60 g protein, whole-food carbs), MUTANT Mass for the best all-round hard-gainer formula, and Allmax QuickMass for flexible value. All stocked in Montreal with same-day shipping.

Best Mass Gainers & Weight Gainers in Canada (2026)

Owner Diana Famintsyna curates every gainer we stock at our Montreal store. This is our complete 2026 lineup of in-stock mass gainers and weight gainers — MUTANT, PVL, Allmax and PEScience — with verified calories, protein and carbs, a balanced "best for" for each, and an honest buyer's guide. No filler, just what is actually on our shelves.

On this page

Our top picks by goal
Full comparison table
Add a gainer to cart
How to choose a gainer
FAQ

Our top picks by goal

Five in-stock gainers, one clear "best for" each. All ship same-day from Montreal.

Best Clean Bulk

PVL Clean Mass Gainer XL (10 lbs)

$111.99 · Weight Gainer · 60 g protein · 1,120 cal

The cleanest macro profile here — 100 g whole-food carbs (oats, quinoa, sweet potato, rice) with only ~9 g sugar, plus 38 g of EAAs/BCAAs/glutamine per 2-scoop daily serving. Best for lean bulking.

Best Overall Gainer

MUTANT Mass Gainer (5 lbs)

$64.99 · Weight Gainer · 56 g protein · ~1,100 cal

Serious hard-gainer gainer — a six-source protein matrix with real-food carbs (sweet potato, oats, barley) and MCT/avocado/seed-oil fats instead of cheap sugar. Triple Chocolate is the bestseller.

Best Value / Flexible Dosing

Allmax QuickMass (3.5 lbs)

$54.99 · Weight Gainer · 16 g / scoop protein · 250 / scoop cal

Flexible dosing — one 65g scoop is 250 cal / 16 g protein / 41 g carbs, so you dial calories up or down. Complex carbs (sweet potato, rolled oats, quinoa) plus coconut MCTs, only 4 g sugar per scoop. Best entry-price gainer.

Best Clean Low-Cal Gainer

PEScience Smart Mass Sachets

$3.99 · Clean Gainer · 25 g / sachet protein · ~225 / sachet cal

The cleanest, most controlled way to add calories — whey+casein with slow-digesting Carb10/Palatinose/oat-bran carbs, maltodextrin-free, no added fat. One sachet ~225 cal / 25 g protein; two = ~450 cal / 40 g protein / 60 g carbs. Best for a clean lean-mass surplus.

Best Bulk Size

MUTANT Mass Gainer (15 lbs)

$129.99 · Weight Gainer · 56 g protein · ~1,100 cal

Same clean six-source formula as the 5lb in the best-value bulk size — the pick if Mutant Mass is already your daily gainer and you want the lowest cost per calorie.

Also great: Prefer to bundle? The PVL Clean Mass + Creatine bundle pairs the clean gainer with creatine at a discount. A note on restocks: Mammoth Mass is a customer favourite that is temporarily out of stock — watch our weight gainer collection for its return.

Full comparison table — in-stock mass gainers

Every column verified against the product label and product page. Calories and macros are per the serving noted on each label (single scoop vs. multi-scoop serving).

Best for	Brand	Product	Calories	Protein	Carbs	Servings	From	Action
Best Overall	Mutant	MUTANT Mass Gainer (5 lbs)	~1,100	56 g	192 g	~10 (5lb)	$64.99	Add to cart →
Best Clean Bulk	PVL	PVL Clean Mass Gainer XL (10 lbs)	1,120	60 g	100 g	~22 (2-scoop)	$111.99	Add to cart →
Best Value	Allmax Nutrition	Allmax QuickMass (3.5 lbs)	250 / scoop	16 g / scoop	41 g / scoop	scalable	$54.99	Add to cart →
Cleanest / Low-Cal	PEScience	PEScience Smart Mass Sachets	~225 / sachet	25 g / sachet	20 g / sachet	single sachet	$3.99	Add to cart →
Best Bulk Size	Mutant	MUTANT Mass Gainer (15 lbs)	~1,100	56 g	192 g	~30 (15lb)	$129.99	Add to cart →

Add a gainer to cart in one tap

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BEST CLEAN BULK

PVL Clean Mass Gainer XL (10 lbs) — buy in Canada at Top Nutrition & Fitness

$111.99 CAD

PVL Clean Mass Gainer XL (10 lbs) PVL In stock

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BEST OVERALL GAINER

MUTANT Mass Gainer (5 lbs) — buy in Canada at Top Nutrition & Fitness

$64.99 CAD

MUTANT Mass Gainer (5 lbs) Mutant In stock

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BEST VALUE / FLEXIBLE DOSING

Allmax QuickMass (3.5 lbs) — buy in Canada at Top Nutrition & Fitness

$54.99 CAD

Allmax QuickMass (3.5 lbs) Allmax Nutrition In stock

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BEST CLEAN LOW-CAL GAINER

PEScience Smart Mass Sachets — buy in Canada at Top Nutrition & Fitness

$3.99 CAD

PEScience Smart Mass Sachets PEScience In stock

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BEST BULK SIZE

MUTANT Mass Gainer (15 lbs) — buy in Canada at Top Nutrition & Fitness

$129.99 CAD

MUTANT Mass Gainer (15 lbs) Mutant In stock

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How to choose a mass gainer: a 3-minute guide

Work out your calorie gap first. A gainer just fills the difference between what you eat and what you need to grow. If you only need +300-500 cal, a flexible-dose gainer (Allmax QuickMass) or a single PEScience Smart Mass sachet is plenty — you do not need a 1,100-calorie shake.
Look at the carb source, not just the number. Whole-food carbs (oats, quinoa, sweet potato, rice in PVL Clean Mass XL and MUTANT Mass) digest slower and feel cleaner than maltodextrin and sugar. PEScience Smart Mass is maltodextrin-free with Carb10/Palatinose.
Match protein to the rest of your day. Clean Mass XL (60 g) and MUTANT Mass (56 g) carry a full protein hit; QuickMass (16 g/scoop) is lighter, so you may pair it with a whey shake.
Pick a size you will actually finish. Start with a 3.5-5 lb tub before committing to a 15 lb; gainers are best used fresh and consistently.

FAQ — mass gainers in Canada

What is the best mass gainer in Canada in 2026?

For a clean lean bulk, PVL Clean Mass Gainer XL is our top pick — 1,120 calories and 60 g protein per 2-scoop serving with 100 g of whole-food carbs (oats, quinoa, sweet potato, rice) and only ~9 g sugar. For an all-round hard-gainer gainer, MUTANT Mass delivers ~1,100 calories, 56 g protein and 192 g carbs from a six-source protein blend. Allmax QuickMass is the best value with flexible per-scoop dosing (250 cal / 16 g protein per scoop). All are stocked in Montreal with same-day shipping.

What is the difference between a mass gainer and a weight gainer?

The terms are used interchangeably — both are high-calorie protein powders designed to add a calorie surplus for weight and muscle gain. The real difference is calorie density and carb source. A "clean" gainer like PVL Clean Mass XL or PEScience Smart Mass uses whole-food or slow-digesting carbs and keeps sugar low, while a maximum-calorie gainer like MUTANT Mass pushes ~1,100 calories per serving. Choose based on how many calories you actually need and how clean you want the carbs.

How many calories should a mass gainer have?

It depends on your goal. If you only need to top up 300-500 calories, a flexible-dose gainer like Allmax QuickMass (250 cal per single scoop, scalable) or one PEScience Smart Mass sachet (~225 cal) is ideal. If you are a true hard-gainer who struggles to eat enough, a full-size serving of MUTANT Mass (~1,100 cal) or PVL Clean Mass XL (1,120 cal) makes the surplus easy. Start with the smallest effective dose and increase only if the scale is not moving.

Are mass gainers good for skinny guys and hard-gainers?

Yes — mass gainers exist precisely for people who cannot eat enough whole food to grow. They deliver hundreds of quality calories in one shake. For hard-gainers we recommend PVL Clean Mass XL or MUTANT Mass, both of which use real-food carbs (oats, sweet potato, quinoa, barley) and multi-source protein rather than cheap sugar, so you gain size without the junk-sugar crash.

Can I use a mass gainer to lean bulk without getting fat?

Yes, if you control the dose and pick a clean formula. PEScience Smart Mass is maltodextrin-free with slow-digesting Carb10/Palatinose carbs and no added fat, so you can add a precise ~225-450 calories. PVL Clean Mass XL keeps sugar to ~9 g per serving. Use a half serving, track your weekly weight, and adjust — a lean bulk is about a modest surplus, not maximum calories.

Where can I buy mass gainers with fast shipping in Canada?

Top Nutrition & Fitness ships same-day from Montreal for orders placed before 1pm ET, and carries in-stock gainers from MUTANT, PVL, Allmax and PEScience ready to leave the warehouse the same business day. Quebec, Ontario and Maritime addresses typically see delivery in 1-2 business days. Free shipping on qualifying Canadian orders.

🛡️Backed by free 30-day support — with an optional 90-day satisfaction upgrade

Every order ships with our free 30-day return policy and full customer service — even on opened tubs. Same-day shipping from Montreal across Canada and the USA via UPS, GLS, Canada Post, ITS, Canpar, Purolator and FedEx. Free shipping on qualifying Canadian orders.

Want more? At checkout, click "Checkout+ Now" for our optional 90-day satisfaction guarantee — no return required, 5% cash back as a coupon (stacks with TNF rewards points), and instant claim resolution within 24 hours via Onward Checkout+. Click "Continue without Benefits" to keep our standard support. Learn more about Onward →

Questions about a specific product?

Email support@topnutritionandfitness.com or text the store at 438-812-5229. We answer every message personally.

About this guide & why trust it

Written by Diana Famintsyna

Owner, Top Nutrition & Fitness · Montreal · Building Canada's most-curated supplement store since July 2016

Every product on this page is stocked in our Montreal warehouse and personally curated. Macros are verified against each product label and product page — never invented. No paid placements: we sell every product listed, so we describe the honest best use for each.