You can get it by itself. MuscleandStrength has some pretty decent deals. I would just be careful of anything that says made in China on it. Vitamin Shoppe or if you have a local health and vitamin or supplement store it might be a good place to start.
You can also get NAC which is a supplement they're trying to stop from being sold over the counter that some people swear is very effective with the flu. There are some really good amino acid supplements, many tied in with caffeine which can be good tasting and a good alternative to coffee or energy drinks.
You can get it by itself. MuscleandStrength has some pretty decent deals. I would just be careful of anything that says made in China on it. Vitamin Shoppe or if you have a local health and vitamin or supplement store it might be a good place to start.
You can also get NAC which is a supplement they're trying to stop from being sold over the counter that some people swear is very effective with the flu. There are some really good amino acid supplements, many tied in with caffeine which can be good tasting and a good alternative to coffee or energy drinks.