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Gaining weight as a woman often feels like a frustrating battle against a fast metabolism, a busy schedule, or simply not knowing how to add calories without adding bloat. Generic mass gainers can leave you feeling sluggish with sugar crashes, while “diet” shakes are often too low in calories to move the needle. You need a shake that delivers dense nutrition, clean ingredients, and a taste that doesn’t feel like a chore.

I’m Mohammad — the founder and writer behind ProteinJug. I’ve spent years analyzing nutritional supplement labels, comparing macros, and filtering through hundreds of clinical studies to understand exactly what women need for healthy, sustainable weight gain. This guide cuts through the marketing to focus on real specs and real results.

Whether you’re looking for a high-calorie meal replacement or a clean protein boost, this guide to the best protein shakes for women to gain weight breaks down the top contenders by what actually matters for your goals.

How To Choose The Best Protein Shakes For Women To Gain Weight

Selecting the right shake for weight gain is different from choosing a post-workout recovery drink. You are looking for a product that provides a significant caloric surplus while also delivering high-quality protein, healthy fats, and complex carbohydrates. Here are the three most critical factors.

Calorie Density vs. Volume

Your primary goal is a caloric surplus. Look for shakes that pack at least 350 to 500 calories per serving in a manageable 8 to 12 fluid ounces. This allows you to consume the necessary energy without feeling overly full or bloated. A high-calorie-to-volume ratio is the key metric for easy, sustainable weight gain.

Protein Quality and Sugar Profile

You need a complete protein source, ideally whey, casein, or a blend, to support lean muscle growth. However, many mass gainers are loaded with excess sugar. Aim for a shake with less than 8 to 10 grams of sugar per serving. The calories should come from a balanced mix of protein, fiber, and quality carbohydrates, not just simple sugars that spike and crash your energy.

Digestibility and Clean Ingredients

For daily use, the shake must be gentle on your stomach. Opt for brands that use minimal, recognizable ingredients and avoid artificial sweeteners, seed oils, and common allergens when possible. Options like A2 milk protein or plant-based shakes can be easier on digestion, ensuring you can stick to your routine without discomfort.

Quick Comparison

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Model Category Best For Key Spec Amazon
Optimum Nutrition Pro Gainer Powder High-Surplus Mass 650 calories per serving Amazon
Boost Very High Calorie RTD Medical/Recovery 530 calories per serving Amazon
Kate Farms Organic 1.4 RTD Clean Plant-Based 455 calories per serving Amazon
Pioneer Pastures A2 RTD Gentle Digestion 30g A2 milk protein Amazon
Premier Protein Indulgence RTD Low-Calorie Snack 170 calories per serving Amazon
Ensure Max Protein RTD Low-Sugar Meal 30g protein, 1g sugar Amazon
Booty Gainer Pro Series Capsule Targeted Glute Growth 60 capsules per bottle Amazon

In‑Depth Reviews

Best Overall

1. Optimum Nutrition Gold Standard Pro Gainer

650 Calories60g Protein

The Optimum Nutrition Gold Standard Pro Gainer is a heavyweight champion for anyone serious about adding mass. Each serving delivers a dense 650 calories, 60 grams of a quality protein blend, and over 80 grams of carbohydrates with less than 8 grams of sugar. This macro profile is engineered for a significant caloric surplus, making it ideal for women who struggle to eat enough whole food. The Vanilla Custard flavor is praised for its rich, creamy taste that mixes smoothly without the chalky texture common in many powders.

For those looking for a straightforward, effective weight gain powder, this is the top-tier choice. The protein blend supports lean muscle repair and growth, while the carbohydrate load helps replenish glycogen stores and fuel your body. It’s a versatile option that can be mixed with milk for even more calories or blended into a smoothie with fruits and nut butters.

The main consideration is the serving size. At 5.09 pounds, you get 14 servings, so the cost per shake is higher than some other options. Also, as a powder, it requires a shaker or blender, making it less portable than ready-to-drink shakes for on-the-go use. But for dedicated, measurable results, this is the most potent tool in the list.

Why it’s great

  • Massive 650 calorie surplus per shake
  • High-quality 60g protein blend for muscle growth
  • Great tasting Vanilla Custard flavor mixes well

Good to know

  • Only 14 servings per container
  • Requires preparation; not a grab-and-go RTD
Calorie-Dense Pick

2. Boost Very High Calorie Nutritional Drink

530 Calories22g Protein

When you need maximum calories in a minimal volume, the Boost Very High Calorie (VHC) drink is a clinical-grade solution. With a staggering 530 calories packed into just 8 fluid ounces, it’s designed for individuals with low appetites or increased nutritional needs. The chocolate flavor is reported to taste good, though its thicker consistency is a direct result of the high calorie density. It’s fortified with 26 vitamins and minerals, ensuring you’re not just getting energy, but comprehensive nutrition.

This is an excellent option for women recovering from illness, managing a condition, or simply finding it difficult to eat large meals. The small serving size makes it easy to consume between meals or as a quick mini-meal. The caloric punch comes from a blend of fats and carbohydrates, providing sustained energy without a massive protein load that can feel heavy.

Some users note the thickness can be a challenge for those with swallowing difficulties, though chilling it over ice helps. The protein content at 22g is lower than some gainers, so it’s better suited for weight gain from a calorie surplus rather than purely for intense muscle building. It’s a targeted, high-calorie tool best used for specific scenarios.

Why it’s great

  • Incredible 530 calories in just 8 oz
  • Packed with 26 vitamins and minerals
  • Ideal for low appetite or recovery needs

Good to know

  • Thick consistency may not suit everyone
  • Lower protein content (22g) per calorie
Clean Plant Pick

3. KATE FARMS Organic 1.4 High Calorie Shake

455 CaloriesUSDA Organic

For women who prioritize clean, plant-based ingredients, the KATE FARMS Organic 1.4 shake is a standout. With 455 calories and 20 grams of plant-based protein per 11 oz serving, it provides a substantial caloric boost without any artificial flavors or sweeteners. It is USDA Organic, Non-GMO Project Verified, and free from common allergens like dairy, soy, and gluten. The vanilla flavor is smooth and mild, making it easy to blend with fruit or peanut butter for extra calories.

This shake is fortified with 27 vitamins and minerals plus phytonutrients from organic greens like broccoli and green tea, offering a nutrient density that surpasses many standard shakes. It’s an exceptional choice for women with dietary restrictions or those looking for a healthier, whole-food approach to weight gain. Users report it’s highly digestible and effective for supporting weight gain without the bloat or chemical aftertaste.

The main drawback is the cost, as it sits at a premium price point for a 6-pack. Additionally, the 20g of protein is lower than some competitors, meaning a larger percentage of the calories come from fats and carbs. This is perfectly fine for weight gain, but those focused on a higher protein-to-calorie ratio may want to supplement with additional protein powder.

Why it’s great

  • USDA Organic with no artificial ingredients
  • 455 calories from clean, plant-based sources
  • Excellent for sensitive stomachs and allergies

Good to know

  • Premium pricing for a 6-pack
  • Protein content is lower (20g) than whey-based options
Gentle Digestion

4. Pioneer Pastures High Protein A2 Milkshakes

30g ProteinA2 Milk

The Pioneer Pastures shake solves a common problem for women who love dairy but struggle with bloating or digestion issues. Made with ultra-filtered A2 milk, it is naturally lactose-free and easier on the stomach because it lacks the A1 beta-casein protein that causes inflammation for many. Each 11 oz serving delivers 30 grams of complete protein from a single-source, with only 2 grams of sugar from added monk fruit, and absolutely no seed oils or artificial sweeteners. The vanilla flavor is clean, smooth, and subtly sweet.

This shake is a fantastic choice for daily use as a meal replacement or post-workout recovery. The clean ingredient list is a major selling point—what you see is basically real dairy milk, concentrated for protein. The 30g of high-quality A2 protein is excellent for muscle preservation and repair during a weight gain phase. The shelf-stable format makes it perfectly portable for a gym bag or desk drawer.

One consideration is the calorie count, which is around 150-170 calories per serving. This is not a high-calorie weight gainer on its own. To use it for gaining weight, you would need to drink it in addition to meals or blend it with calorie-dense ingredients like nut butters, bananas, and oats. Its strength is clean, digestible protein, not maximum calories.

Why it’s great

  • A2 milk is gentle on digestion and lactose-free
  • Clean ingredients with no seed oils or artificial sweeteners
  • Excellent 30g single-source protein per serving

Good to know

  • Low calorie count for a weight gain goal
  • Subtle flavor may not satisfy those wanting a strong taste
Dessert Flavored

5. Premier Protein Shake INDULGENCE

30g Protein170 Calories

The Premier Protein INDULGENCE line is a fantastic option for women who want the taste of a dessert without derailing their nutrition. The White Chocolate Raspberry flavor is a crowd-pleaser, described as creamy, smooth, and not chalky—a far cry from typical protein drinks. Each 11 oz serving provides 30 grams of protein with only 170 calories and 3 grams of sugar, making it a low-calorie, high-protein snack or a fantastic base for a coffee creamer.

Its primary role in a weight gain plan is as a protein supplement rather than a primary calorie source. It’s perfect for boosting your daily protein intake to support muscle repair, which is essential for converting the calories you eat into lean mass. The flavor variety is a major plus, helping you stick to your routine without getting bored. The 12-pack is a great value for a premium RTD shake.

Because it is low in calories, it cannot be your sole weight gain shake. You would need to consume multiple shakes per day or add high-calorie additions. The sweet taste is also very noticeable, with some users finding it best mixed into coffee rather than drinking straight as a shake. It excels as a delicious, convenient protein booster.

Why it’s great

  • Delicious, smooth, dessert-like flavor
  • 30g high-quality protein for muscle support
  • Versatile as a shake or coffee creamer

Good to know

  • Low in calories (170); not a mass gainer
  • May be too sweet for some tastes
Low Sugar Choice

6. Ensure Max Protein Shake

30g Protein1g Sugar

Ensure Max Protein is a reliable, doctor-recommended choice that focuses on delivering high protein with minimal sugar. With 30 grams of protein, only 1 gram of sugar, and 4 grams of fiber per 11 oz serving, it supports muscle health and digestive wellness simultaneously. The Milk Chocolate flavor is consistently praised as one of the best-tasting protein shakes on the market, often compared to a thin chocolate milk without any chalky or artificial aftertaste. It’s also packed with 25 vitamins and minerals for a well-rounded nutrient profile.

This shake is ideal for weight gain when used in conjunction with a high-calorie diet. It provides the essential building blocks for muscle repair without the unnecessary sugar that can lead to energy crashes. The added prebiotic fiber is a great touch for gut health, which is often a secondary concern during weight gain phases. The 12-pack is a solid value for a trusted brand.

Like the Premier Protein shake, the calorie count is low (around 150-170), so it’s not a standalone weight gain solution. It is a superb protein supplement to complement your meals. Some users have noted the texture is thinner than other protein shakes, but this is generally seen as a positive attribute for drinkability.

Why it’s great

  • Excellent 30g protein with only 1g sugar
  • Includes prebiotic fiber and 25 vitamins/minerals
  • Tastes like real chocolate milk, no chalkiness

Good to know

  • Low in calories; must be part of a larger eating plan
  • Contains corn fiber, which may be an issue for some
Targeted Growth

7. Booty Gainer Pro Series

CapsulesGlute Focus

The Booty Gainer Pro Series takes a different approach as a capsule-based supplement designed to support targeted glute growth. Instead of providing direct calories, it contains a proprietary blend of ingredients intended to naturally support muscle volume and shape in the glutes when paired with a consistent workout routine. Users report it is easy to take, with no stomach issues and a noticeable effect on the roundness and lift of their buttocks after several weeks of use. The packaging is also described as cute and professional.

For women whose primary weight gain goal is a curvier, more pronounced backside, this offers a non-surgical, supplement-based approach to enhance their efforts. It works best as part of a holistic plan that includes glute-targeted exercises and a proper diet. The simple 2-capsule daily dosage is easy to remember and incorporate into any routine.

It is critical to understand that this is not a protein shake and does not provide calories. It is a dietary supplement with claims that are not evaluated by the FDA. Its effectiveness is highly individual and dependent on consistent use and a proper lifestyle. For pure weight gain in a general sense, a high-calorie shake would be more directly effective.

Why it’s great

  • Targeted approach for glute growth and shape
  • Easy, tasteless capsules with no side effects
  • Supports workout results for a curvier figure

Good to know

  • Not a calorie or protein source; not a meal
  • Results vary; requires consistent use and exercise

FAQ

Will protein shakes for women to gain weight make me bulky?
No. Gaining significant “bulk” requires a very specific, high-intensity weight training program and a massive caloric surplus. For most women, using these shakes to support a moderate caloric surplus will result in lean muscle and healthy weight gain, contributing to a fuller, more toned appearance without looking bulky. The term “toned” is often just low body fat with some underlying muscle.
How many shakes should I drink per day to gain weight?
This depends entirely on your individual caloric maintenance level and weight gain goals. As a general guideline, adding one high-calorie shake (350-530 calories) on top of your normal diet can support a gain of about 0.5 to 1 pound per week. Two shakes may be necessary for a more aggressive gain. It is best to track your weight weekly and adjust based on your progress.
Is it better to use powder or ready-to-drink (RTD) shakes?
Powders, like the Optimum Nutrition Pro Gainer, offer more flexibility and typically a lower cost per serving, allowing you to control the mix and add ingredients. However, they require preparation and cleanup. RTD shakes, like Boost VHC, offer maximum convenience and are perfect for busy schedules or travel. They are also a better option if you have a low appetite and need a small, calorie-dense portion.

Final Thoughts: The Verdict

For most users, the protein shakes for women to gain weight winner is the Optimum Nutrition Gold Standard Pro Gainer because it offers the highest calorie and protein density in a proven, great-tasting formula, giving you the most effective tool for a serious caloric surplus. If you want the convenience of the highest calorie RTD with clinical-grade nutrition, grab the Boost Very High Calorie Drink. And for a clean, plant-based option that is gentle on the stomach, nothing beats the KATE FARMS Organic 1.4.