This list includes ALL consumable items that you'll find in the Grunge game, and what their effects are. 

• Alcohol - recovers 20% HP 
• Water - recovers 60% HP and 30% MP 
• Weed - removes ANY state and recovers 20% HP 
• Josta - recovers 30% HP 
• Mello Yello - recovers 30% MP 
• Crystal Pepsi - recovers 40% HP and removes Poison 
• School Lunch - recovers 10% HP 
• Tampon - recovers 20% HP 
• Pad - recovers 40% HP 
• Candy - recovers 5% HP 
• Popcorn - recovers 100% HP 
• Doritos - recovers 50% HP 
• Dunkaroos - Grow Max HP by 20 points 
• Carrots - Grow Max HP by 100 points 
• First Aid Kit - full recovery of HP and removes almost all states EXCEPT knockout 
• Bandaids - 30% HP recovery 
• Squeezit - 100% MP recovery 
• Sunny Don't Die Revive - revives player 

Update as of version 1.6:

• Bagel Bites - increases AK by 15
• Pizza Pockets - increases DF by 15 
• Chef Boyadoi - increases MP & HP by 15