Bucked Up Mother Bucker, 20 Servings

Six-dimension breakdown

Why this scored 55/100

Bucked Up Mother Bucker is a high-stimulant pre-workout from Bucked Up (parent brand DAS Labs), a real US sports-nutrition brand with distribution and a public product line. This SKU explicitly discloses 400 mg total caffeine from fast and delayed-release sources, which is a critical honest disclosure — pre-workout products in the 300-400 mg caffeine range are common but many hide the dose. 400 mg is at the FDA-cited safe daily limit for healthy adults, meaning even a single serving hits the day's ceiling; caffeine-sensitive users, those under 5 ft 5 in / 130 lb, and anyone with cardiovascular baseline risk should avoid it. Beyond caffeine, pre-workouts in this class typically include beta-alanine (RCT evidence for high-intensity work at 3-6 g/day loading), citrulline malate (evidence for pumps and repeated-set performance at 6-8 g), L-tyrosine, and various proprietary 'focus' blends. Full ingredient panel not visible in the excerpt; if the non-caffeine actives are dose-disclosed, Standard is appropriate. If they are hidden in a proprietary blend the score drops. Standard tier reflects legitimate brand, extreme-user honesty about caffeine dose, and inherent safety trade-off of high-stim category.

Evidence & sources

The Vyvata score's Evidence dimension measures the quality of published RCT support for a product's active ingredients at the label dose. Our source hierarchy: double-blind RCTs in MEDLINE-indexed journals > single-blind RCTs > open-label trials > observational studies > mechanism papers > N=1 case studies (anecdotes). Predatory journals and manufacturer-authored studies without independent replication are weighted down.

Product-specific evidence citations for this item are embedded in the analysis text on the "Analysis" tab. For the full framework and evidence hierarchy, see the methodology page.

How to read the Evidence dimension

• 80–100: Multiple double-blind RCTs in indexed journals directly testing this product OR the exact ingredients at the exact dose.
• 60–79: Single double-blind RCT + supporting ingredient literature at the studied dose.
• 40–59: Open-label trials + ingredient literature; no product-specific double-blind evidence.
• 20–39: Ingredient literature only; no product-specific trials or trials in predatory venues.
• 0–19: No credible evidence base or unverifiable claims.

FAQ data has not been generated for this product yet. See the site FAQ for general questions.

Customer reviews

All the data we have on this product

Every VSF-related metafield surfaced verbatim. Nothing hidden. If you spot data that looks wrong, let us know.

VSF score

55 / 100

Tier

Standard

Category

Supplements

Subcategory

energy metabolic

Last scored

August 30, 2026

Third-party certifications

None on record at time of scoring

Vendor

PoorBoySupplements.com

Product type

Pre-Workout

Tags

PoorBoySupplements.com, Shopify Collective

Every score is set from the published rubric, audit-logged, and rescored whenever new evidence emerges (published trials, updated labels, third-party testing releases). Every vendor is scored on the same criteria — no pay-to-play. See our editorial-independence disclosure for the full policy, including brands with an editorial relationship to this site.