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Fallout 76-Database-Mutations and Addictions-Unstable Isotope

All Mutations and Addictions

Unstable Isotope
Fallout 76 Mutation

Unstable Isotope

Medium chance to release a radiation blast when struck in melee. Minor damage to player during the radiation blast.

Mutation

Medium chance to release a radiation blast when struck in melee. Minor damage to player during the radiation blast.

Unstable Isotope is a mutation in Fallout 76. It can be gained reliably from the Unstable Isotope Serum.

1 perk and 2 team conditions change what it does.

Unstable Isotope Builds

Feral Ghoul chainsaw build

Ghoul feral melee

Melee Adrenaline pure strength and endurance. Theory crafting. build

Ghoul low level build

Decapitated Assaultron

Assaultron Head build

Fallout 76 build

Fallout 76 build

Blood Sacrifice Ghoul PA

High HP Red Terror build

Fisher King Ghoul build

Show all 141

builds

Jump into the character build planner with this mutation, plus the perks and conditions you've toggled, already selected, then build the rest of your loadout around it.

Create a build with Unstable Isotope

Modifiers

These perks and team conditions change what Unstable Isotope does. Toggle them and watch the effects above update.

Perk

Strange In Numbers

Positive mutation effects are +25% stronger if teammates are mutated too.

Condition

Team

Condition

Has Mutated Teammate

Granted by

Consumables (1)

Unstable Isotope Serum

When you take melee damage, a radiation effect may be created. This damages you and your foes.

More Mutations

Adrenal Reaction

Electrically Charged

Twisted Muscles

F76

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