All powdered supplements are mixed in specialised units which are designed to give you the exact ratio of protein, fats and carbs and other ingredients as stated on the label. Yes Synergy ISO-7 is classed as an all in one product.

You can eat a meal virtually right after (it wouldn't likley negatively affect the performance of the product) but most people wait 30 minutes or more. Depends upon your goals too

If you are slim and have trouble building muscle, you will never succeed unless you increase your calories dramatically. Bodyfat is an inevitable consequence of gaining muscle unless you are just starting to train or have very fortunate genetics. We would strongly recommend a weight gainer product. Choose one that contains creatine or add creatine to your gainer. Excellent choices are Mutant Mass and Mass-Tech. In addition to the gainer, you need to train hard and consistently and to eat a LOT!

If you move to the Muscle Fuel Anabolic by USN, this will supply more calories and allow you to gain faster. You have to decied whether you want to gain muscle or stay (or get) lean. If you try to do both at the same time, you'll likely fail at both. So either gain muscle along with some fat or get lean and try to preserve as much muscle as possible. Feel free to request more advice when you have decided upon your main priority.

Firstly NO-Xplode is a pre workout designed to give you great mental focus and muscle pumps during training. ISO-7 does not have this stimulant effect. So combining the two is great.

In order to build the maximum amount of muscle you need to be over eating your daily intake of calories on a daily basis.

ISO-7 is a great product for people who are looking to maintain as it offers only a small amount of carbs.

Muscle fuel anabolic is one of the best selling mass gaining all-in-ones on the market and provides you with everything you need to repair and and help grow. MFA contains a great amount of carbs for post training replenishment and the right amount of creatine to help boost those strength and muscle gains.

Dont look at consuming high quality calories as a bad thing as if your going to store fat. The excess calories will help promote more substantial muscle gains than those on a low carb diet.

If you take both at the recommended dosages, there shouldn't be any problems in this regard.

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Synergy twice daily is great for lean gains but if you want big, fast gains or if you are a hard gainer, then you need something with more calories. Try Muscle Fuel Anabolic - it has a similar formula but just more calories and carbs for gaining.

Creatine can definitely be taken long term. There is no evidence of methoxy being harmful long term but this has not been studied extensively (although thousands of people probably use it long term).

16 year olds should not use testosterone boosters. testosterone levels are already at their peak at this age. Stick to using protein or weight gainers (depending upon what body type you have, your goals and how easily you gain weight) and creatine products.

As far as the Methoxy, there isn\'t enough research to say you should or shouldn\'t \"cycle off\" it but there is no evidence of harm in using it long term so far. Creatine and HMB can be taken continuously because they and similar molecules have been in our diet since before humans walked upright and there is no evidence of negative side effects in either (despite the ill-informed reports of side effects from creatine).
There is no evidence that ZMA absorption or retention is affected by dairy products.

Creatine has not been shown to affect growth (height wise) and there's no good reason to believe it is a problem to take it at your age but very little research has been done on people your age. Whoever told you it can have negative affects on your heart and organs is misinformed. There are now over 3000 scientific studies on creatine and most experts believe it has no negative side effects whatsoever. The Synergy is probably a good choice as (like you said) it is not high in creatine.

Yes, these products contain mostly different ingredients. The only thing to watch is your zinc intake, as both products contain a good dose of zinc. Over time, this can possibly have some side effects but as long as you don't take both products together for more that a few months, it shouldn't be a problem.

This product does contain a moderate amount of creatine monohydrate, which has been heavily studied and is considered safe but hasn't been studied in too many people under 18 (although it has been studied in young children with certain diseases without any aparent negative effects). Creatine is also found naturally in the diet (although in smaller amounts).
So it's your choice but you should be fine to take this product.

One Stop has a similar ingredient profile to Synergy but reports are that the One Stop doesn't taste that great. Promax extreme is very low in carbs (so you won't absorb as much creatine and won't recover optimally after workouts) and also only contains 10 servings per tub.

Synergy suggests that you take it twice per day - 60-90 min before your workout and either any other time during the day or just after your workout. You could also use it just as a post workout product and have it between meals on non-workout days.