what's the difference between this one and serious mass?

This is much easier to digest, healthier, better protein and nutrients and only one scoop compared to 4 which becomes chalky and hard to drink. This tastes a lot better than serious mass and is much easier to drink overall. I drank this with reduced fat milk for 3-4 months straight and gained 20 lbs. of course I was also tracking and lifting weights, but this helped a ton to get those extra 800 calories I needed that I couldn’t obtain through meals and a lot of cooking.

I'm most concerned about it causing gas. Any comments?

NO Gas with vanilla custard and i give this to my 98 yr old MOTHER who weight 80 LBS as a supplement !! SHE Wd get it cuase shes in a wheelchair- Just finished a 10 lb bag.. DO need to drink WATER cuase HIGH protein can stop u up.. I also add ice cream to it:) tastes great! Good stuff- Doc approved! Shes in GREAT shape + he does Labs on her al the time.

If this is so good, it makes me wonder why it has twice the protein and is $45 cheaper per 10lb bag than Gold Standard - the same company.

Which Gold Standard are you looking at? This is a lean weight gainer vs protein vs bulking weight gainer. Sometimes the wholesalers give us deals if we purchase a large amount at a time. Some sellers (myself included) will discount the price in relationship with the "cost" associated with the product I sell.

Which is better for bulk muscle mass: serious mass or pro gainer

Serious Mass is a high-calorie gainer with 1,250 calories and 60 grams of protein per serving. PRO Gainer is a high-protein gainer with 60 grams of protein per serving at 650 calories.

ASIN	B0015R3A1S
ASIN	B0015R3A1S
Age Range Description	Adult
Allergen Information	Milk, Soy
Best Sellers Rank	#10,971 in Health & Household ( See Top 100 in Health & Household ) #9 in Sports Nutrition Weight Gainers #1,136 in Sales & Deals
Brand Name	Optimum Nutrition
Color	No Color
Container Type	Bag
Date First Available	April 28, 2004
Department	unisex-adult
Diet Type	Kosher
Dosage Form	Powder
Flavor	Double Chocolate
Global Trade Identification Number	00748927029710
Is Discontinued By Manufacturer	No
Item Dimensions	8.06 x 8.06 x 11.18 inches
Item Form	Powder
Item Weight	5.09 Pounds
Item model number	1077890
Manufacturer	Optimum Nutrition - NutWell
Manufacturer	Optimum Nutrition - NutWell
Manufacturer Part Number	1077890
Material Features	Sugar Free
Model Name	GS - Pro-Gainers Weight Gainer - Protein Powder
Model Number	1077890
Number of Items	1
Primary Supplement Type	Vitamin C
Product Benefits	Muscle Growth, Weight Gain
Product Dimensions	8.06 x 8.06 x 11.18 inches; 5.09 Pounds
Total Servings Per Container	14
UPC	748927029710
Unit Count	81.44 Ounce

GS Pro Gainer Weight Gainer Protein Powder, Double Chocolate, 5.09 Pounds (Packaging May Vary)

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