What Is It: Scivation Xtend is the original Amino Acid BCAA product. This is the best selling amino acid product with caffeine to help energize you and build muscle
Use: As a dietary supplement, mix one scoop per 8-16 oz. of water (adjust for taste preferences). Shake well and consume up to two scoops during exercise on training days or between meals on non-training days. For best results, use two scoops per day.
The BCAAs here are in the standard 2:1:1 configuration emphasizing leucine (which, of course, is the most important of the amino acids for building and maintaining muscle). This means, each serving of Xtend Go provides 3.5g L-Leucine, 1.75g L-Isoleucine, and 1.75g L-Valine. For a “tweener” product that’s mostly billed as a lighter pre-workout, this is actually a great dosage!
In fact, it’s the identical dosage to what’s in Scivation’s original Xtend intra-workout… certainly more than enough for a mid-day “booster” product. Many BCAA-only supplements often top out at 5g of BCAAs, and some of the cheaper ones are dosed far lighter than this!
For a pick-me-up product, caffeine anhydrous is requisite. The standard moderate one-cup-of-coffee dose of 100mg is just fine, but some days that’s just not enough.
Scivation has updated the 2016 version of Xtend Go to pack a whopping 200mg per scoop – far more than most energy amino products that have 100mg! This if for those days you are really dragging after lunch.
For some of you this may mean 1/2-scooping the product for a more mild energy boost, but for the rest of us, it’s the perfect amount to keep you turning and burning throughout the work day. If you like smaller doses of caffeine, don’t worry, the next ingredient will help soothe things out.
L-Theanine is a non-dietary amino acid that’s mostly found in a few varieties of tea. It induces relaxation without sedation, so it’s usually included in supplements to take any rough edges off the stim content. As you no doubt noticed, the theanine dosage has now been disclosed and increased from the previous version.
Theanine has been a hot focus-enhancer and jitter-killer popular in new pre workouts lately, but users of cognitive enhancers have long known about it and loved it. The 1:1 ratio of caffeine to theanine is different from the typical 2:1 ratio seen in pre workouts, but since this is more of a “pick me up” product, you’re not supposed to get all “jacked up” like you would on a pre workout; you’re just supposed to feel more awake and focused, which is exactly what you’ll get with the 1:1 ratio.
A conditionally essential amino acid, glutamine is depleted rapidly during prolonged exercise (and that’s the only time supplementation is really necessary outside of certain medical conditions). 5g per serving is a more standard dose, but since this product isn’t intended to be an intra-workout it isn’t really a big loss.
Note that glutamine does not “build muscle”, but it’s good and cheap to have during workouts, especially if on an empty stomach (like many of Xtend’s users prefer to work out).
Citrulline Malate is included here in a relatively minor dose, and not meant for the pumps like most citrulline users like. Study results that show improvement in exercise performance are up in the 6g to 8g range.
Moreso than the citrulline pumps, the malic acid (from the malate) may boost work capacity and oxygen utilization.
A now-relatively-standard electrolyte blend. Xtend Go carries over the same proprietary blend of Sodium Chloride, Potassium Chloride and Trisodium Citrate Dihydrate seen in the original Xtend. Trisodium citrate dihydrate is just another term for sodium citrate and is mostly included for flavor.