Group Therapy is a character deck card in Back 4 Blood. It is a Discipline Type Card with Defense 
Affinity and will be a part of many healer-deck builds.
Pros
- Heals all party members regardless of distance from the user
- Healing amount from Group Therapy can be increased with +Healing Efficiency cards on player that receives the Medical Accessory
Cons
- Healing increase dependent on target of Medical Accessory
- Does not overheal and can be wasted on full health or near full health teammates
- Group Therapy does not heal Trauma Damage
How to Get Group Therapy in Back 4 Blood
The Group Therapy deck card can be purchased from The Clinic Supply Line.
Card Synergies
Group Therapy is best used in healer decks since it heals teammates and gets buffed with cards that increase +Healing Efficiency.
Medical Expert – A great card to go with Group Therapy because of its 15% Healing Efficiency and increased movement speed when using a healing item. Great for healing and running from Ridden.
Field Surgeon – The biggest healing increase from a single card at 60%. Its only drawback is -50% Use Speed making healing application twice as long. Make sure you offset this with a +Use Speed item.
EMT Bag – The 2nd biggest healing increase at 40% but has a less severe negative effect with -20% stamina efficiency.
Antibiotic Ointment – A small healing increase at 20% but has no negative effects.
Players can also take advantage of the 2 Pain Meds enhancement cards to further give the player bonuses when they use Pain Meds to trigger Group Therapy in Back 4 Blood.
Stimulants – Gives the player 10% Move Speed, Reload Speed, and Weapon Speed for 30 seconds. Works well with the previously listed Medical Expert to give the player a combined 25% move speed buff for 15 seconds.
Chemical Courage – A purely offensive card that increases damage by 25% for 60 seconds. Great for using just before boss encounters. Heal up and add to your firepower.