These provide limited healing (+5 units of health), but do little to reverse the effects of major damage.
Nali Healing Fruit
This native plant has natural healing properties. When eaten, it can give you a 30-unit health boost. In multiplayer games, Nali Healting Fruits re-grow soon after they are picked. You can create these by dropping Seeds. Plants heal you lesser when they are growning.
Health
Medium-sized Health boxes that heal you for 20 points.
Superhealth
Boosts your health by 100 units. Don't waste Superhealth by using it when you are close to full health (200 units). Wait until you need a big health boost before you pick it up. (Note: you can not exceed 100 health without one of these)
Assault Vest
You will find many different types of armor throughout the game, all of which increase your resistance to damage from weapons and impact. Certain types of armor provide better protection from certain forms of attack. The more damage your armor absorbs, the weaker it becomes. Keep an eye on your Armor level indicator to see how much strength your armor has left. Once your armor level reaches zero, the armor no longer offers you any protection. The Assault Vest provides for you incredible defense, but its durability is very low.
Asbestos Suit
Provides resistance to Burned (like Lava and Gasbag's belches) and Frozen (Nitrogen pools) damage. They have a durability of 50 points.
Kevlar Suit
Works in conjunction with the Assault Vest to provide even greater protection from damage. Unlike it, the Kevlar Suit is more durable but it provides less protection.
Toxin Suit
Prevents damage from Tarydium waste pools, and other toxic areas. You're also immune to BioRifle shots and Slith's acidic saliva. Note: all protective suits increase your overall resistance to any sort of damage to some degree. Like armor, protective suits become weaker as they absorb damage. Has a durability of 50 points.