Originally Answered: What type or brand of protein powder or supplements should I use to gain weight?
You will not lose weight if you start lifting and protein will help you gain weight. Of course, yes, calories are the most important thing and you should probably talk to your doctor about ways to gain weight. I don't necessarily recommend eating anything you get your hands on. Sure, you can eat tons of calories to gain weight, but just because you physically cant pack on the pounds does not mean your heart isn’t feeling the unhealthy effects of the junk you are eating. So yes, eat ridiculous amount of food but not necessarily unhealthy food, just make sure you get the calories. You mainly want high quality protein from chicken and lean meat.
If you want to pack on the weight via weightlifting, you need to lift everyday for about an hour, alternating muscle groups each day. An example would be chest/triceps/shoulders one day and bicep/back the next day (your typical push-pull routine). You can do sit ups whenever, and work in legs a couple times a week on one of those days.
As far as supplements are concerned, you should definitely take protein if you are trying to build muscle. I would also recommend creatine (ethyl ester not monohydrate) as well. When using these supplements you need to be sure to drink A LOT of water, this diminishes the harmful effect these supplements might (not if you take them safely) have on your kidneys. I believe the rule of thumb for protein is that you should not exceed 1 gram of supplemental protein per pound of body weight (some people will say per kilogram, ask your doctor). I'd take two grams of creatine before lifting, although people will say to take 2 before and 2 after, that stuff can be a little more detrimental than the protein so I'd play it safe there.
The other supplement I will note, but not not necessarily require you to take, is an N.O./caffeine supplement. This includes, N.O. explode, Nano Vapor, and the brand Wal-Mart carries, NoX Blast. These help with motivation more than anything. The caffeine hit gets you amped to lift and the N.O. (nitric oxide, not to be confused with the gas nitrus oxide) gets your blood flowing. Unfortunately, this supplement is a little pricy. Also, gauge your tolerance carefully when first taking this stuff, you can feel nauseous if you take too much.
For protein, take Whey after you lift (and potentially before if you want) to help recovery. If you eat right after you lift, and what you eat is already high in protein, you probably do not need to take the Whey after. At night you could consider taking Caseine protein. This protein is not absorbed as fast as Whey so its feeds your muscles for a sustained time as you sleep. To build muscle you should take in plenty of protein throughout the day, try to spread it out a little and have something high in protein at each meal.
As far as lifting is concerned, you probably want to do low reps high weight, but that's a whole different matter.
To sum up, if you want to gain weight take the above supplements, consume a crap load of calories, and lift hard everyday and you should be set.
- Side note: You can get all these supplements at Wal-mart. If you do go to a weightlifting supplement store, most will do online price matching. You are also going to need to buy a shaker to mix this crap.