--- product_id: 581838869 title: "Underground Bio Labs/Panda Supps Skull:Nootropic Pre-Workout,403mg Caffeine, ..." brand: "underground bio labs" price: "€ 122.45" currency: EUR in_stock: true category: "Underground Bio Labs" url: https://www.desertcart.gr/products/581838869-underground-bio-labs-panda-supps-skull-nootropic-pre-workout-403mg store_origin: GR region: Greece --- # 403mg multi-source caffeine for explosive energy 8g L-Citrulline Malate + 1000mg Agmatine for insane muscle pumps 600mg Alpha GPC for razor-sharp tunnel vision focus Underground Bio Labs/Panda Supps Skull:Nootropic Pre-Workout,403mg Caffeine, ... **Brand:** underground bio labs **Price:** € 122.45 **Availability:** ✅ In Stock ## Summary > 💥 Skull Crusher: Unlock your ultimate workout beast mode! ## Quick Answers - **What is this?** Underground Bio Labs/Panda Supps Skull:Nootropic Pre-Workout,403mg Caffeine, ... by underground bio labs - **How much does it cost?** € 122.45 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/581838869-underground-bio-labs-panda-supps-skull-nootropic-pre-workout-403mg) ## Best For - underground bio labs enthusiasts ## Why This Product - Trusted underground bio labs brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Epic Muscle Pumps:** 8g L-Citrulline Malate and 1000mg Agmatine Sulfate deliver vascular pumps that turn heads 💪 - • **Endurance That Lasts:** 50mg Senactiv boosts stamina so you push harder and recover faster 🔥 - • **Unmatched Energy Surge:** 403mg caffeine blend powers your workouts with sustained, jitter-free energy ⚡ - • **Mood & Motivation Boost:** Lion’s Mane and AstraGin enhance cognition and absorption for a motivated, elevated mindset 🚀 - • **Laser-Focused Tunnel Vision:** 600mg Alpha GPC and 3g L-Tyrosine sharpen mental clarity to crush distractions 🧠 ## Overview Underground Bio Labs’ Skull Pre-Workout is a high-stimulant, nootropic formula designed for professionals who demand peak mental focus, explosive energy, and massive muscle pumps. Featuring 403mg of caffeine from three sources, 600mg Alpha GPC for tunnel vision, and potent pump agents like L-Citrulline Malate and Agmatine Sulfate, this 40-serving powder fuels endurance, sharpens cognition, and elevates mood — all in a delicious Dragonfruit Watermelon Candy flavor. Perfect for those who refuse to settle and want to dominate every training session. ## Description PANDA SUPPS - SKULL Pre-Workout Behold SKULL, our all new High Stimulant Nootropic Pre-Workout the newest addition to our growing pre-workout lineup! Forged with utmost precision over an arduous span, this pre-workout transcends the boundaries of focus and nootropic pre-workouts, ascending to the realm of the extraordinary. SKULL combines pump, focus, tunnel vision, and endurance all in one pre-workout! A new chapter has been opened in the Panda Supps pre-workout lineup. SKULL Pre is a testament to the unyielding dedication of Panda Supps, forever etched in the hearts of those who seek unparalleled excellence. Skull pre-workout, with its powerful ingredients, promotes muscle endurance, helping you push through those intense training sessions with ease. Not only does it aid in energy production, giving you the sustainable fuel you need to power through your workouts, but most importantly, it supports focus and mental sharpness, allowing you to stay fully engaged and in the zone. Additionally, Skull pre-workout provides mood elevation, helping you feel motivated and ready to tackle your fitness goals. Its tunnel vision effect enables you to block out distractions and maintain unwavering concentration. What sets this pre-workout apart is its ability to reduce the perception of effort. With the added benefit of delivering amazing pumps, Skull pre-workout is undoubtedly destined to become your new favorite pre-workout supplement. Directions: SKULL should be consumed 20 minutes prior to any workout or exercise session. Depending on tolerance, start with 1/2 - 1 scoops and mix vigorously in 8 Oz of water until dissolved fully. Do NOT exceed 2 scoops. ## Features - MENTAL PERFORMANCE: 500 MG Lion’s Mane COGNITION: 100 Mg CognatiQ - PUMP: 1000 MG Agmatine Sulfate PUMP: 8G L-Citrulline Malate - ENERGY: 403MG Caffeine (3 Different Sources) ABSORBTION: 50 MG AstraGin ENDURANCE: 50 MG Senactiv - FOCUS: 3G L-Tyrosine TUNNEL VISION: 600 MG Alpha GPC ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CMJ8CS7R | | ASIN | B0CMJ8CS7R | | Age Range Description | Adult | | Best Sellers Rank | #102,438 in Health & Household ( See Top 100 in Health & Household ) #233 in Sports Nutrition Pre-Workout Powders | | Brand Name | Underground Bio Labs | | Customer Reviews | 4.2 4.2 out of 5 stars (28) | | Date First Available | November 4, 2023 | | Flavor | Skull Crusher | | Item Dimensions | 3.5 x 3.5 x 6 inches | | Item Form | Powder | | Manufacturer | Underground Bio Labs | | Manufacturer | Underground Bio Labs | | Manufacturer Part Number | SkullPre | | Model Name | "SkullPre | | Number of Items | 1 | | Product Benefits | Energy Management | | Product Dimensions | 3.5 x 3.5 x 6 inches; 1.12 pounds | | Total Servings Per Container | 40 | | UPC | 051497423186 | | Unit Count | 14.81 Ounce | ## Product Details - **Age Range (Description):** Adult - **Brand:** Underground Bio Labs - **Flavor:** Skull Crusher - **Item Form:** Powder - **Item dimensions L x W x H:** 3.5 x 3.5 x 6 inches - **Model Name:** "SkullPre - **Number of Items:** 1 - **Product Benefits:** Energy Management - **Servings per Container:** 40 - **Unit Count:** 14.81 Ounce ## Images ![Underground Bio Labs/Panda Supps Skull:Nootropic Pre-Workout,403mg Caffeine, ... - Image 1](https://m.media-amazon.com/images/I/81wDHp-Q6aL.jpg) ![Underground Bio Labs/Panda Supps Skull:Nootropic Pre-Workout,403mg Caffeine, ... - Image 2](https://m.media-amazon.com/images/I/61SPAE92VlL.jpg) ![Underground Bio Labs/Panda Supps Skull:Nootropic Pre-Workout,403mg Caffeine, ... - Image 3](https://m.media-amazon.com/images/I/81HjPeSKAxL.jpg) ![Underground Bio Labs/Panda Supps Skull:Nootropic Pre-Workout,403mg Caffeine, ... - Image 4](https://m.media-amazon.com/images/I/81i8KPOL3IL.jpg) ## Available Options This product comes in different **Flavor** options. ## Frequently Bought Together - Underground Bio Labs/Panda Supps Skull:Nootropic Pre-Workout,403mg Caffeine, Tunnel Vision Focus,Pumps, Unparalled Energy (40 Scoops) (Dragonfruit Watermelon Candy) Skull Crusher - Underground Bio Labs Panda Supps Pump, Pre-Workout, No-Clump Formula w/10G L-Citrulline Malate, Alpha GPC, Lions Mane,CognatiQ™,VasoDrive-AP® 40 Scoops (Rainbow Dragonfruit) - Underground Bio Labs™ Panda Supps: Rampage, Extreme Pre-Workout, High Stim, Maximum Pump, Focus, and Energy,(50 Servings) (Kiwi-Lychee-Pinapple Flavor AKA Goblin Juice) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/581838869-underground-bio-labs-panda-supps-skull-nootropic-pre-workout-403mg](https://www.desertcart.gr/products/581838869-underground-bio-labs-panda-supps-skull-nootropic-pre-workout-403mg) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-08-05*