When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
ANIMAL M-STAK – NEW 2026 ADVANCED FORMULA
Non-Hormonal Lean Muscle & Performance Support
Universal Nutrition / Animal
NEW FORMULA – NOW FEATURING 400 MG PEAK ATP®
Take your training to the next level with the NEW Animal M-Stak, a completely updated non-hormonal muscle-building formula from Universal Nutrition\'s Animal brand.
M-Stak is designed for serious lifters, hard gainers, and athletes looking for additional support for lean muscle development, strength, training performance, recovery, endurance, and nutrient utilization.
The 2026 formula has been rebuilt around several targeted complexes and now includes the clinically studied PEAK ATP® ingredient at a full 400 mg dose.
WHAT\'S NEW IN THE 2026 FORMULA?
400 MG PEAK ATP®
A patented form of ATP designed to support exercise performance, strength, power output, and lean mass development.
3,000 MG AMINO COMPLEX
A concentrated amino acid complex designed to support muscle growth, recovery, and lean muscle preservation while helping support the body\'s response to intense training.
1,325 MG ADAPTOGEN & ABSORPTION COMPLEX
Featuring ingredients including PeakO2® and Ashwagandha, designed to support endurance, recovery, and the body\'s response to physical stress.
AstraGin® is included to support nutrient absorption and utilization.
500 MG ENERGY & FOCUS COMPLEX
Provides approximately 200 mg of caffeine from a combination of caffeine, kola nut, and guarana to support energy, focus, and training intensity.
KEY FORMULA FEATURES
✔ NEW 2026 ADVANCED FORMULA
✔ 400 MG PEAK ATP®
✔ Non-Hormonal Muscle-Building Formula
✔ 3,000 MG Amino Complex
✔ PeakO2® for Endurance & Training Support
✔ AstraGin® for Nutrient Absorption Support
✔ Beta-Ecdysterone & Turkesterone
✔ Energy & Focus Complex
✔ Approximately 200 MG Caffeine
✔ Designed for Lean Muscle & Strength Support
✔ Convenient Animal Pill-Pack Format
✔ Made by Universal Nutrition / Animal
BUILT FOR SERIOUS TRAINING
Animal M-Stak takes a multi-pathway approach to muscle and performance support. Instead of relying on a single ingredient, the updated formula combines ATP support, amino acids, adaptogens, nutrient-absorption ingredients, and an energy/focus complex in one convenient pack.
It\'s an excellent addition to a structured training and nutrition program for anyone looking to maximize their efforts in the gym.
HOW TO USE
Follow the directions printed on the product label.
IMPORTANT: The new M-Stak formula contains a 500 mg Energy & Focus Complex with approximately 200 mg of caffeine. Animal also indicates that the energy-complex pill can be removed for those who prefer a stimulant-free option.
For best results, use M-Stak consistently as part of a proper diet, resistance-training program, hydration, and recovery routine.
PRODUCT DETAILS
Brand: Animal / Universal Nutrition
Product: M-Stak
Formula: NEW 2026 Advanced Formula
Type: Non-Hormonal Muscle & Performance Support
Format: Convenient Pill Pack
Primary Goal: Lean Muscle, Strength, Performance & Recovery Support