---
product_id: 590415146
title: "Underground Bio Labs Skull Pre-Workout Lemon Blueberry Pineapple 40sv"
brand: "underground bio labs"
price: "$119.59"
currency: USD
in_stock: true
category: "Underground Bio Labs"
url: https://www.desertcart.us/products/590415146-underground-bio-labs-skull-pre-workout-lemon-blueberry-pineapple-40sv
store_origin: US
region: United States of America
---

# 403mg Caffeine for sustained energy 8g L-Citrulline Malate for insane muscle pump 600mg Alpha GPC for tunnel vision focus Underground Bio Labs Skull Pre-Workout Lemon Blueberry Pineapple 40sv

**Brand:** underground bio labs
**Price:** $119.59
**Availability:** ✅ In Stock

## Summary

> 💥 Skull Pre-Workout: Dominate your day with focus, pump, and relentless energy!

## Quick Answers

- **What is this?** Underground Bio Labs Skull Pre-Workout Lemon Blueberry Pineapple 40sv by underground bio labs
- **How much does it cost?** $119.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/590415146-underground-bio-labs-skull-pre-workout-lemon-blueberry-pineapple-40sv)

## 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

- • **Laser-Sharp Focus:** 600mg Alpha GPC and 3g L-Tyrosine dial in tunnel vision for peak mental clarity
- • **Endurance to Outlast:** 50mg Senactiv boosts stamina so you push harder, longer
- • **Nootropic Powerhouse:** 500mg Lion’s Mane and 100mg CognatiQP enhance cognition and mood for total mind-body synergy
- • **Explosive Muscle Pumps:** 8g L-Citrulline Malate + 1000mg Agmatine Sulfate deliver vascularity that turns heads
- • **Unmatched Energy Surge:** 403mg caffeine from 3 sources powers your grind without the crash

## Overview

Underground Bio Labs’ Skull Pre-Workout is a cutting-edge nootropic formula combining 403mg caffeine, 600mg Alpha GPC, and 8g L-Citrulline Malate to deliver unparalleled energy, tunnel vision focus, and muscle pumps. Enhanced with Lion’s Mane and CognatiQP for cognitive support, plus endurance-boosting Senactiv, this 40-serving powder fuels intense workouts with sustained energy and mental sharpness, making it the go-to choice for professionals who demand peak performance without the crash.

## Description

Buy Underground Bio Labs Skull Pre-Workout Lemon Blueberry Pineapple 40sv | Panda Supps SKULL pre-workout combines elite focus, tunnel vision, huge pumps, and 403mg caffeine for relentless endurance! on desertcart.com ✓ FREE SHIPPING on qualified orders

## 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 | B0CMJBD76R |
| Age Range Description | Adult |
| Best Sellers Rank | #133,739 in Health & Household ( See Top 100 in Health & Household ) #282 in Sports Nutrition Pre-Workout Powders |
| Brand | Underground Bio Labs |
| Brand Name | Underground Bio Labs |
| Customer Reviews | 3.9 out of 5 stars 23 Reviews |
| Dosage Form | Powder |
| Flavor | Insane In The Membrane |
| Item Dimensions | 3.5 x 3.5 x 6 inches |
| Item Form | Powder |
| Item Highlight | Panda Supps SKULL pre-workout combines elite focus, tunnel vision, huge pumps, and 403mg caffeine for relentless endurance! |
| Item Weight | 1.2 pounds |
| Item dimensions L x W x H | 3.5 x 3.5 x 6 inches |
| Manufacturer | Underground Bio Labs |
| Manufacturer Part Number | SkullPre |
| Model Name | "SkullPre |
| Number of Items | 1 |
| Product Benefits | Energy Management |
| Recommended Uses For Product | pre-workout |
| Total Servings Per Container | 40 |
| UPC | 051497423179 |
| Unit Count | 14.81 Ounce |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** Underground Bio Labs
- **Flavor:** Insane In The Membrane
- **Item Form:** Powder
- **Item Weight:** 1.2 pounds
- **Item dimensions L x W x H:** 3.5 x 3.5 x 6 inches
- **Number of Items:** 1
- **Product Benefits:** Energy Management
- **Servings per Container:** 40
- **Unit Count:** 14.81 Ounce

## Images

![Underground Bio Labs Skull Pre-Workout Lemon Blueberry Pineapple 40sv - Image 1](https://m.media-amazon.com/images/I/81ZoFLKluyL.jpg)
![Underground Bio Labs Skull Pre-Workout Lemon Blueberry Pineapple 40sv - Image 2](https://m.media-amazon.com/images/I/61SPAE92VlL.jpg)
![Underground Bio Labs Skull Pre-Workout Lemon Blueberry Pineapple 40sv - Image 3](https://m.media-amazon.com/images/I/81kcwUqr3fL.jpg)
![Underground Bio Labs Skull Pre-Workout Lemon Blueberry Pineapple 40sv - Image 4](https://m.media-amazon.com/images/I/81pvTeWstbL.jpg)

## Available Options

This product comes in different **Flavor** options.

## Questions & Answers

**Q: How much should I take if I'm new to high-stimulant pre-workouts?**
A: Start with 1/2 to 1 scoop mixed in 8 oz of water. Assess tolerance before increasing. Do not exceed 2 scoops per serving.

**Q: When should I take SKULL before my workout?**
A: Consume SKULL 20 minutes before your workout or exercise session for best results.

**Q: How do I mix SKULL properly?**
A: Add 1 to 2 scoops to 8 oz of water and mix vigorously until fully dissolved. Adjust water amount to your taste preference.

**Q: How much caffeine is in a full serving of SKULL?**
A: A full 2 scoop serving contains 403 mg of caffeine sourced from 3 different sources. Start with a half scoop if you are sensitive to stimulants.

## Frequently Bought Together

- Underground Bio Labs/Panda Supps Skull:Nootropic Pre-Workout, 403mg Caffeine for Tunnel Vision Focus,Pump, Unparalled Energy (40 Scoops) (Lemon Blueberry Pineapple)(Insane in The Membrane)
- 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)
- 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)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-08*