These mutagens are presented in alphabetical order. You can learn a mutagen at the same time you meet its prerequisites.

Aether

Prerequisite: 11th level.
You gain a flying speed of 20 feet for 1 hour.
Side effect. You have disadvantage on Strength and Dexterity ability checks for 1 hour.

Alluring

Your skin and voice become malleable, allowing you to slightly enhance your appearance and presence. You have advantage on Charisma ability checks.
Side effect. You have disadvantage on initiative rolls.

Celerity

Your Dexterity score increases by 3, as does your Dexterity maximum. This bonus increases by 1 at 11th and 18th level.
Side effect. You have disadvantage on Wisdom saving throws.

Conversant

You gain advantage on Intelligence ability checks.
Side effect. You have disadvantage on Wisdom ability checks.

Cruelty

Prerequisite: 11th level.
When you use the Attack action, you can make an additional weapon attack as a bonus action.
Side effect. You have disadvantage on Intelligence, Wisdom, and Charisma saving throws.

Deftness

You gain advantage on Dexterity ability checks.
Side effect. You have disadvantage on Wisdom ability checks.

Embers

You gain resistance to fire damage.
Side effect. You gain vulnerability to cold damage.

Gelid

You gain resistance to cold damage.
Side effect. You gain vulnerability to fire damage.

Impermeable

You gain resistance to piercing damage.
Side effect. You gain vulnerability to slashing damage.

Mobility

You gain immunity to the grappled and restrained conditions. At 11th level, you also are immune to the paralyzed condition.
Side effect. You have disadvantage on Strength ability checks.

Nighteye

You gain darkvision for up to 60 feet. If you already have darkvision, this increases its range by 60 additional feet.
Side effect. You gain sunlight sensitivity.

Percipient

You gain advantage on Wisdom ability checks.
Side effect. You have disadvantage on Charisma ability checks.

Potency

Your Strength score increases by 3, as does your Strength maximum. This bonus increases by 1 at 11th and 18th level.
Side effect. You have disadvantage on Dexterity saving throws.

Precision

Prerequisite: 11th level
Your weapon attacks score a critical hit on a roll of 19-20.
Side effect. You have disadvantage on Strength saving throws.

Rapidity

Your speed increases by 10 feet. At 15th level, your speed increases by 15 feet instead.
Side effect. You have disadvantage on Intelligence ability checks.

Reconstruction

Prerequisite: 7th level
For 1 hour, at the start of each of your turns, you regain hit points equal to your proficiency bonus if you have at least 1 hit point, but no more than half of your hit points.
Side effect. Your speed decreases by 10 ft for 1 hour.

Sagacity

Your Intelligence score increases by 3, as does your Intelligence maximum. This bonus increases by 1 at 11th and 18th level.
Side effect. You have disadvantage on Charisma saving throws.

Shielded

You gain resistance to slashing damage.
Side effect. You gain vulnerability to bludgeoning damage.

Unbreakable

You gain resistance to bludgeoning damage.
Side effect. You gain vulnerability to piercing damage.

Vermillion

You gain an additional use of your Blood Maledict feature.
Side effect. You have disadvantage on death saving throws.