Thorne Pre-Workout Elite Citrus Berry Flavored Review

Caffeine is the main active ingredient here. The label figure of 5.11 grams of caffeine per serving looks like a misread, likely the serving weight, since reviewers describe a modest dose of about 70 milligrams. That would sit slightly below the smallest dose that worked in the studies given. In controlled trials, a single 86 milligram dose raised energetic mood and sped reaction time ^[1]. Doses of 200 to 400 milligrams reduced boredom and fatigue during repetitive tasks ^[2]. A review of 13 crossover studies found low to moderate doses before or during exercise improved self-reported energy, mood and attention ^[3]. Pooled analyses of trials found caffeine improved running endurance ^[4], energy production and time to exhaustion in combat sports ^[5], and overall exercise test results by about 12 percent ^[6]. Most of these exercise studies used doses scaled to body weight, well above what this product likely provides. The mushroom blend has no study findings here, so its effect is unknown. Animal and cell studies are never counted.

Caffeine is the main ingredient, and the panel is split, with no clear majority recommending it. Four of the ten use it, for morning alertness, focus, fasted training and fat burning, and for long stretches of mental work; doses mentioned run from 100 to 150 milligrams up to 300 or 400 milligrams, with 100 to 200 milligrams suggested before focused work, and one person uses slow release caffeine. Several recommend pairing it with L-theanine to smooth out jitters, and one adds Alpha GPC and MCT to coffee. Three warn against it, citing stress, worry, a crash later in the day, and poor sleep, and many advise stopping by noon or lunch, with one adding that people who clear caffeine slowly are most affected; one person stopped for a year, and another suggests avoiding it for three months before conception. One panelist cautions against combining caffeine with a large dose of glycine, and another notes it cannot fix brain fog on its own.

Combine with: For its intended pre-workout purpose, this product pairs well with creatine monohydrate (3-5 g daily) for strength and power, L-citrulline or citrulline malate for blood flow and endurance, and electrolytes (sodium, potassium, magnesium) for hydration during training. Post-workout, whey or plant protein and magnesium glycinate support recovery and sleep, which caffeine can disrupt if taken late in the day. L-theanine can smooth out caffeine jitters. If your real goal is vision support, choose a separate evidence-based eye formula containing lutein, zeaxanthin (AREDS2-style), astaxanthin, omega-3 DHA/EPA, zinc, and vitamin C and E, and take it independently of the pre-workout.