
AI-estimated changes in effects over the first 14 hours after taking 1 serving.
| Ingredient | Clinically effective dose | Dose in Shred Burner | Status |
|---|---|---|---|
| Caffeine (actual caffeine) | 200–400 mg | 100 mg | 50%Under-dosed |
| Tetramethyluric Acid (Theacrine) | 200 mg | 20 mg | 10%Under-dosed |
| Methylliberine (Dynamine) | 100 mg | 20 mg | 20%Under-dosed |
| Theanine | 200–400 mg | 100 mg | 50%Under-dosed |
| N-Acetyl-L-Tyrosine (NALT) | 1 g | 0.08 g | 8%Under-dosed |
| Synephrine | 30 mg | 15 mg | 50%Under-dosed |
| Theobromine | 250 mg | 50 mg | 20%Under-dosed |
| Huperzine-A | 200 mcg | 50 mcg | 25%Under-dosed |
| Forskolin | 250 mg | 12 mg | 5%Under-dosed |
| Rhodiola Rosea | 200 mg | 50 mg | 25%Under-dosed |
| Juniper Berry Extract | 200 mg | 50 mg | 25%Under-dosed |
| Amentoflavone (Selaginella) | 50 mg | 25 mg | 50%Under-dosed |
| Lion's Mane (Hericium erinaceus) | 1.5 g | 0.05 g | 3%Under-dosed |
Pack Nutrition Shred Burner leans into mental clarity and focus rather than fat-burning or appetite control, which are both fairly weak here.
It spreads its stimulant content across a few sources instead of one big caffeine hit, which tends to feel smoother.
You'll want the larger 2-capsule dose for a meaningful effect — the smaller option is quite mild.
Honest take: A mediocre fat burner dressed up as a focus supplement.
Effects of Caffeine Intake on Endurance Running Performance and Time to Exhaustion: A Systematic Review and Meta-Analysis
Promising, but Not Completely Conclusive-The Effect of l-Theanine on Cognitive Performance Based on the Systematic Review and Meta-Analysis of Randomized Placebo-Controlled Clinical Trials
The effect of Rhodiola rosea supplementation on endurance performance and related biomarkers: a systematic review and meta-analysis
The Safety and Efficacy of Citrus aurantium (Bitter Orange) Extracts and p-Synephrine: A Systematic Review and Meta-Analysis