Temporary skill boost

A temporary skill boost is anything caused by an item, Summoning familiar, or action that temporarily raises a player's level in one or more skills. It allows the player to access some skilling activities above their current base level. For example, a Crafting potion, which boosts a player's Crafting level by three, lets the player craft potion flasks with a Crafting level of 86. The skill boost rounds down, e.g. when a stranger plant boosts a player from level 90 Farming by 4.6 levels, their level will be boosted to 94.

Temporary boosts do not stack, e.g. a dwarven stout provides +1 level boost to Mining and Smithing, and a mature dwarven stout provides +2 to the same skills; using them together only produces a +2 boost as only the higher boost counts.

Gaining a level while a temporary boost is active also increases the boosted level by 1.

Boost decay and how to prevent it

Boosts decay back to the player's base level at a rate of one level per minute. Unlike most other effects, skill changes do decay while banking. The second when the boost decays is based upon the time at which the player logged in. When players log in to a world (after the logging in message disappears and the players begin to load the screen into the game), a timer starts, and when they log out, this timer resets. Usually, a skill boost will decrease by 1 whenever 60 seconds have elapsed. Given these facts, players can almost indefinitely maintain a decayable boost by ensuring they log off or hop worlds before the 60 seconds have elapsed.

Overloads and overload variants, wilder pies, and other effects which provide a 'static' boost resist decay by periodically reapplying their effect.

The Berserker curse extends the decay timer by 15% (nine seconds) for combat skills, but it is unknown if this can be used in combination with the trick wherein you maintain a boost by logging out and in.

Levels which are drained are also restored at a level per minute. The Rapid Restore prayer doubles this rate of restoration, restore potions can restore the levels of all combat skills (except Summoning), and a super restore restores the levels of all skills, including Prayer points.

Invisible boosts

These boosts are not visible on the player's skills interface, and most of them cannot allow a player to perform activities above their base level (an exception is the Crystal saw). Most invisible boosts are provided by Summoning familiars. For example, a granite lobster provides an invisible Fishing boost of four levels but does not allow a player with level 72 Fishing to catch sharks, which require level 76 Fishing; instead, it allows the player to catch fish with the same speed as if they were four levels higher. Invisible Archaeology boosts only affect the rate at which materials are gathered from both excavation hotspots and material caches. Invisible boosts do stack with visible boosts and other invisible boosts.

Uses

Entering a guild that requires a certain skill level, such as drinking a dwarven stout to enter the Mining Guild. Note: This does not work for the Warriors' Guild.
Doing an action that requires a higher level than the player is currently at, such as using a fishing potion to fish sharks.
Meeting the skill requirements of some quests, such as While Guthix Sleeps. Players should note that temporary boosts do not work on all quests. Check the page for the quest to confirm whether temporary boosts will work.
Performing most achievements.
Investigating ancient effigies.
Repairing items that are cheaper depending on Smithing level.

Boost calculator

 template  = :Temporary skill boost/Calc/Template
 form      = boostCalcForm
 result    = boostCalcResult
 param     = skill|Skill|Select skill|select|Agility,Archaeology,Attack,Constitution,Construction,Cooking,Crafting,Defence,Divination,Farming,Firemaking,Fishing,Fletching,Herblore,Hunter,Invention,Magic,Mining,Necromancy,Prayer,Ranged,Runecrafting,Slayer,Smithing,Strength,Thieving,Woodcutting
 param     = level|Level|1|int|1-120

Items that give temporary boosts

Potions, such as the hunter potion which boosts a player's Hunter level by three.
Food, such as the garden pie which boosts a player's Farming level by three.
Drinks, such as the wizard's mind bomb which boosts a player's Magic level by two or three depending on the player's Magic level.
Summoning scrolls, such as the Spirit Terrorbird scroll (Tireless Run) which boosts a player's Agility level by two.
Spicy stews - can only be accessed with completion of Evil Dave's section in the quest Recipe for Disaster. These are random and can boost OR lower a skill by up to five (six is possible albeit extremely uncommon).
The crystal saws from The Eyes of Glouphrie and Prifddinas provide an invisible boost of three and five respectively to a player's Construction level. They allow players to build items as if their Construction level was three or five levels higher; this is an invisible boost and so can be used in conjunction with tea or stews.
Capes of Accomplishment boost the corresponding skill level to 100/99 when the cape is equipped or operated. Prayer and Constitution skillcapes have a cool down period of one minute.
God banners allow players to boost one non-combat skill by 2 levels for a period of 30 minutes each day. Completing the exploration set allows players to boost Agility by five levels for 30 minutes a day. Completing the combat set allows players to boost one combat skill by five levels for a period of 30 minutes each day.
Advanced pulse cores have a chance to boost a random category of skills with a scaling boost of up to seven for most skills and up to eleven levels for gathering skills upon running out of charge and exploding.

List of boosts affecting multiple skills

Image	Boost	Skill	Level increase	Visibility	Other info
	Skillcape	Any skill	+1	Visible	Activating the cape's effect increases the corresponding skill by 1.
	Poison chalice	Crafting, Fletching, Thieving, Attack, Strength, Defence	Up to +1 Crafting, Fletching, or Thieving, Up to +4/up to -3 Attack, Strength, and Defence	Visible	Has random effects of skill increase, combat stats increase/decrease, or heal/damage the player, see effects
	Spicy stew	Any skill but Summoning, Constitution, Prayer, Dungeoneering, Invention and Archaeology	Up to ±6 with three spice doses Up to ±3 with 2 spice doses Up to ±1 with a spice dose	Visible	Depending on type of stew, any skill (besides Summoning, Invention, Constitution, Prayer, and Dungeoneering) can be boosted or reduced by one to six points randomly. Completion of Evil Dave's Big Day Out is advised for a guaranteed boost of two or higher.
	Super melee potion	Attack, Strength, and Defence	12% + 2, rounded down	Visible	None.
	Super warmaster's potion	Attack, Strength, Defence, Magic, Ranged and Necromancy	12% + 2, rounded down	Visible	None.
	Extreme brawler's potion	Attack, Strength, and Defence	15% + 3, rounded down	Visible	Recipe must be found and bought.
	Extreme battlemage's potion	Magic and Defence	15% + 3, rounded down	Visible	Recipe must be found and bought.
	Extreme sharpshooter's potion	Ranged and Defence	15% + 3, rounded down	Visible	Recipe must be found and bought.
	Extreme warmaster's potion	Attack, Strength, Defence, Magic, Ranged and Necromancy	15% + 3, rounded down	Visible	Recipe must be found and bought.
	Overload	Attack, Strength, Defence, Magic, Ranged and Necromancy	15% + 3, rounded down	Visible	The boost is reapplied every 15 seconds for five minutes.
	Holy overload potion	Attack, Strength, Defence, Magic, Ranged and Necromancy	15% + 3, rounded down	Visible	Recipe must be bought. Restores 486 Prayer points over the course of six minutes. Stat boosts are reapplied every 15 seconds.
	Searing overload potion	Attack, Strength, Defence, Magic, Ranged and Necromancy	15% + 3, rounded down	Visible	Recipe must be bought. Protects against dragon fire for six minutes. Stat boosts are reapplied every 15 seconds.
	Overload salve	Attack, Strength, Defence, Magic, Ranged and Necromancy	15% + 3, rounded down	Visible	Recipe must be found and bought. Protects against dragon and wyvern fire damage for six minutes. Restores 555 Prayer points over the course of six minutes. Reduces poison damage taken by 100% for 5 minutes and 46 seconds. Stat boosts are reapplied every 15 seconds.
	Aggroverload	Attack, Strength, Defence, Magic, Ranged and Necromancy	15% + 3, rounded down	Visible	Recipe must be unlocked. Causes monsters in an 8 by 8 radius of the player to become aggressive towards them for 6.25 minutes. Stat boosts are reapplied every 15 seconds.
	Holy aggroverload	Attack, Strength, Defence, Magic, Ranged and Necromancy	15% + 3, rounded down	Visible	Recipe must be unlocked. Causes monsters in an 8 by 8 radius of the player to become aggressive towards them for 6.25 minutes. Restores 486 Prayer points over the course of six minutes. Stat boosts are reapplied every 15 seconds.
	Supreme overload potion	Attack, Strength, Defence, Magic, Ranged and Necromancy	16% + 4, rounded down	Visible	Recipe must be found and bought. Stat boosts are reapplied every 15 seconds.
	Supreme overload salve	Attack, Strength, Defence, Magic, Ranged and Necromancy	16% + 4, rounded down	Visible	Recipe must be found and bought. Protects against dragon and wyvern fire damage for six minutes. Restores 555 Prayer points over the course of six minutes. Reduces poison damage taken by 100% for 5 minutes and 46 seconds. Stat boosts are reapplied every 15 seconds.
	Elder overload potion	Attack, Strength, Defence, Magic, Ranged and Necromancy	17% + 5, rounded down	Visible	Recipe must be bought. Stat boosts are reapplied every 15 seconds.
	Elder overload salve	Attack, Strength, Defence, Magic, Ranged and Necromancy	17% + 5, rounded down	Visible	Recipe must be bought. Protects against dragon and wyvern fire damage for six minutes. Restores 555 Prayer points over the course of six minutes. Reduces poison damage taken by 100% for 5 minutes and 46 seconds. Stat boosts are reapplied every 15 seconds.
	Dominion marker	Attack, Strength, Defence, Magic, Ranged and Necromancy	Tier 1: +4 Tier 2: +6 Tier 3: +8 Tier 4: +10	Visible	Boosts Combat skills when placed nearby. Reapplies the boost once it decays back to the base level.
	Clan citadel powerups	Attack, Strength, Defence, Magic, Ranged, Necromancy, Agility, or Summoning	Up to 10	Visible	Which skill is boosted and the amount it is boosted by depend on what the powerup has been assigned in the battlefield editor.
or	Sugar skull or Toffee apple	Any skill except Constitution, Invention, Prayer, Summoning, or Archaeology	+2	Visible	If the correct random effect (given at random from amongst four effects) is received, then: When eaten, all skills except for the four mentioned ones are boosted.
	God banner powerup	Any skill except Constitution, Slayer, Prayer, Summoning, Dungeoneering, or Invention.	Combat boost: +5 to Attack, Strength, Defence, Magic, Ranged and Necromancy Exploration boost: +5 to Agility. Skill boost: +2 to any choice of one of the following: Fishing, Mining, Runecrafting, Crafting, Woodcutting, Firemaking, Fletching, Construction, Hunter, Thieving, Cooking, Herblore, Smithing, Farming, Divination, or Archaeology.	Visible	Requires pledging allegiance to one of the god factions and completing the relevant set of tasks assigned by that god's emissary. Each type of boost can be used once per day and lasts for 30 minutes; active boosts must expire before activating another.
	Advanced pulse core explosion	Any skill except Invention.	Artisan: Up to +7 to Cooking, Construction, Crafting, Firemaking, Fletching, Herblore, Runecrafting, and Smithing. Combatant: Up to +7 to Attack, Constitution, Defence, Magic, Necromancy, Prayer, Ranged, Strength, and Summoning. Gatherer: Up to +11 to Divination, Fishing, Mining, and Woodcutting. +8 to Farming and Archaeology. +7 to Hunter Support: Up to +7 to Agility, Dungeoneering, Slayer and Thieving.	Visible	Any of the four skill categories may be boosted at random for non-ironmen members in the area when a core is consumed and explodes. The boost amount scales with the levels of the skills being boosted. It may alternatively heal the player and restore prayer points.
	Ring of Whispers	Divination, Farming, Fishing, Hunter, and Archaeology.	+3	Invisible	Equipping this ring will provide a +3 invisible skill boost to any gathering skill except Mining, where it instead provides a +3 damage boost per strike.

List of temporary boosts

Boost	Skill	Level increase	Visibility	Notes
Jitterberry	Agility	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Spirit Terrorbird scroll (Tireless Run)	Agility	2	Visible	Special move of the spirit terrorbird. Restores running energy by half the player's Agility level rounded up. Does not stack.
Agility potion (or mix)	Agility	3	Visible	Mix also heals 60 life points. Agility potion does not stack with summer pies or stamina potions.
Stamina potion	Agility	6	Visible	Untradeable. Requires 77 . Also drastically decreases energy drain rate. Any boosts that restore run energy will prevent you from drinking this potion.
Abyssal Lurker scroll (Abyssal Stealth)	Agility and Thieving	4	Visible	Special move of the Abyssal lurker. Does not stack.
Summer pie	Agility	5	Visible	Also heals 1,187 life points and restores 20% run energy per bite.
Mead	Agility	1 + 1%	Visible
Cup of soil tea	Archaeology	2	Visible	Untradeable. Requires 20 .
Archaeology potion	Archaeology	3	Visible
Standard cup of tea	Attack	2-3	Visible	Also heals 200-375 life points. Not to be confused with cup of tea (player-owned house).
Attack potion (or mix)	Attack	1 + 8%	Visible	Mix also heals 30 life points.
Super attack (or mix)	Attack	2 + 12%	Visible	Mix also heals 60 life points.
Extreme attack	Attack	3 + 15%	Visible	Requires 88 herblore to make.
Zamorak brew (or Zamorak mix)	Attack and Strength	1 + 8%	Visible	Decreases Defence by 1 + 8% and remaining life points by 12% (Mix boosts life points by 600 then drains 12%).
Super Zamorak brew	Attack, Strength, Ranged, Magic, and Necromancy	2 + 12%	Visible	Decreases Defence by 2 + 8% and remaining life points by 20 + 8%.
Combat potion (or mix)	Attack and Strength	1 + 8%	Visible	Mix also heals 60 life points.
Ruby harvest jar	Attack	20%	Visible	Must be used on another player. Boost affects the player it is used on.
Rumberry	Attack	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Grand attack potion	Attack	2 + 14%	Visible
Supreme attack potion	Attack	4 + 16%	Visible	Recipe needs to be bought
Cavefish	Combat skills	One combat skill is boosted randomly by 2.	Visible	Also heals 2,200 life points.
Cup of tea (player-owned house)	Construction	1, 2, or 3	Visible	Boost depends on the shelf the cup used was obtained from.
Crystal saw	Construction	3	Invisible	Only applies to items requiring a saw (e.g. not rooms or plants).
Crystal saw (Prifddinas)	Construction	5	Invisible	Only applies to items requiring a saw (e.g. not rooms or plants).
Sculpting chisel	Construction	1	Invisible	Requires completions of God Statues for at least four months in any location. Needs to be wielded to receive boost.
Chef's delight	Cooking	1 + 5%	Visible	Also reduces Attack and Strength by 2 levels and restores 540 life points.
Mature chef's delight	Cooking	2 + 5%	Visible	Also reduces Attack and Strength by 7 levels and restores 570 life points.
Cooking potion	Cooking	3	Visible
Super cooking potion	Cooking	5	Visible
Extreme cooking potion	Cooking	1-17 (level-dependent)	Visible	Untradeable. Requires 104 .
Squiffberry	Cooking	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Crafting potion	Crafting	3	Visible
Defence potion (or mix)	Defence	1 + 8%	Visible	Mix also heals 60 life points.
Enhanced Excalibur	Defence	15%	Visible	Also heals 20% lifepoints over 21 seconds
Elite enhanced excalibur	Defence	15%	Visible	Also heals 40% lifepoints over 21 seconds
Super defence (or mix)	Defence	2 + 12%	Visible	Mix also heals 30 to 60 life points.
Extreme defence	Defence	3 + 15%	Visible	Requires 90 herblore to make.
Saradomin brew / Dom saradomin brew	Defence	4% + 1	Visible	Decreases Attack, Strength, Magic, Ranged and Necromancy levels by 4% + 1.
Super Saradomin brew	Defence	6% + 1	Visible	Decreases Attack, Strength, Magic, Ranged and Necromancy levels by 4% + 1.
Draynor Manor Cabbage	Defence	1 or 2	Visible	Also heals 200 life points.
War Tortoise scroll (Testudo)	Defence	8	Visible	Special move of a war tortoise.
Elemental Titan scroll (Titan's Constitution)	Defence	12.5%	Visible	Special move of a fire titan, moss titan, and ice titan. Also restores 6% maximum life points. Life points can rise above normal level with the boost.
Sapphire glacialis jar	Defence	20%	Visible	Must be used on another player. Boost affects the player it is used on.
Grand defence potion	Defence	2 + 14%	Visible
Supreme defence potion	Defence	4 + 16%	Visible	Recipe needs to be bought.
Divination potion	Divination	3	Visible
Super divination	Divination	5	Visible
Extreme divination	Divination	15% of level + 3	Visible	Requires level 89 Herblore to make.
Meloberry	Divination	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Dreadfowl	Farming	1	Visible	Speak to dreadfowl.
Compost mound	Farming	1 + 2%	Visible	Speak to compost mound.
Stranger plant	Farming	1 + 4%	Visible	Speak to stranger plant.
Cider	Farming	1	Visible	Also reduces Attack and Strength by 2 levels and restores 140 life points.
Mature cider	Farming	2	Visible	Also reduces Attack and Strength by 5 levels and restores 170 life points.
Cocoaberry	Farming	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Garden pie	Farming	3	Visible	Also heals 60 life points per bite.
Pork pie	Farming	5	Visible	Also heals 1,350 life points. Unlike most pies, only has one bite.
Pigswill	Farming	3	Visible	Also reduces Attack and Strength by 3 levels and restores 1,100 life points.
Mature pigswill	Farming	4	Visible	Also reduces Attack and Strength by 3, restores 30 Summoning points and 880 life points.
Smoulderberry	Firemaking	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Pyrelord	Firemaking	3	Invisible	Familiar must be summoned.
Phoenix (familiar)	Firemaking	6	Invisible	Familiar must be summoned.
Lava titan	Firemaking	10	Invisible	Familiar must be summoned.
Fishing potion (or mix)	Fishing	3	Visible	Mix also heals 30 to 60 life points.
Super fishing potion	Fishing	5	Visible
Fishstabber	Fishing	3	Visible	Special attack of a dragon harpoon
Fish pie	Fishing	3	Visible	Also heals 470 life points per bite.
Admiral pie	Fishing	5	Visible	Also heals 875 life points per bite.
Granite Crab	Fishing	1	Invisible	Familiar must be summoned.
Ibis	Fishing	3	Invisible	Familiar must be summoned.
Granite lobster	Fishing	4	Invisible	Familiar must be summoned.
Stormberry	Fishing	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Squeck juice	Fishing	1	Visible	Severely reduces Cooking.
Fletching potion	Fletching	3	Visible
Greenman's ale	Herblore	1	Visible	Also reduces Attack, Strength, and Defence by 2 levels and restores 290 life points.
Mature Greenman's ale	Herblore	2	Visible	Also reduces Attack, Strength, and Defence by 2 levels and restores 320 life points.
Gloomberry	Herblore	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Hunter potion (or mix)	Hunter	3	Visible	Mix heals 20 to 30 life points.
Super hunter	Hunter	5	Visible
Extreme hunter	Hunter	15% of level + 3	Visible	Requires level 80 Herblore to make.
Spirit graahk, spirit kyatt, and spirit larupia	Hunter	5	Invisible	Familiar must be summoned.
Arctic bear	Hunter	7	Invisible	Familiar must be summoned.
Mournberry	Hunter	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Wolpertinger	Hunter	5	Invisible	Familiar must be summoned.
Mud bath	Hunter	10%	Visible	Requires completion of As a First Resort, which requires level 48 Hunter. Also temporarily removes the player's scent, removing the need to use a torch while hunting to improve catch rates.
Invention potion	Invention	3	Visible
Super invention	Invention	5	Visible
Extreme invention	Invention	15% of level + 3	Visible	Requires level 95 Herblore to make.
Elidinis Statuette	Life points	500	Visible	Requires completion of Spirit of the Elid. Any lost life points are restored prior to the boost. Also restores Prayer points.
Thermal bath	Life points	5%	Visible	Requires completion of As a First Resort. Any lost life points are restored prior to the boost. Also cures and gives temporary protection from poison and disease.
Fireberry	Magic	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Magic essence potion (or mix)	Magic	3	Visible	Mix also heals 30 to 60 life points.
Wizard's mind bomb	Magic	2 + 2%	Visible	Also reduces Attack, Strength, and Defence by 5 levels and restores 340 life points. +3 boost only applies if the player's Magic level is higher than 50. Is available to free players.
Mature wizard's mind bomb	Magic	3 + 2%	Visible	Also reduces Attack, Strength, and Defence by 5 levels and restores 370 life points. +4 boost only applies if the player's Magic level is higher than 50.
Magic potion (or mix)	Magic	1 + 8%	Visible	Mix also heals 30 to 60 life points.
Vecna skull	Magic	2 + 10%	Visible	Cannot be used if magic is boosted and only once every seven minutes.
Super magic potion (or mix)	Magic	2 + 12%	Visible	Mix also heals 30 to 60 life points.
Extreme magic	Magic	3 + 15%	Visible	Requires level 91 Herblore to make.
Wolpertinger scroll (Magic Focus)	Magic	7	Visible	Special move of a wolpertinger.
Grand magic potion	Magic	2 + 14%	Visible
Supreme magic potion	Magic	4 + 16%	Visible	Recipe needs to be bought.
Void ravager	Mining	1 + 1	Visible and invisible	Familiar must be summoned. Speak to the void ravager to obtain a visible boost of one (45 seconds).
Stoneberry	Mining	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Obsidian golem	Mining	9	Invisible	Familiar must be summoned.
Lava titan	Mining	10	Invisible	Familiar must be summoned.
Gargoyle	Mining	12	Invisible	Familiar must be summoned.
Mining potion	Mining	3	Visible
Super mining potion	Mining	5	Visible
Dwarven stout	Mining and Smithing	1	Visible	Also reduces Attack and Strength levels by 2 + 5% and restores 190 life points. Is available to free players.
Mature dwarven stout	Mining and Smithing	2 + 1%	Visible	Also reduces Attack, Strength, and Defence by 7 levels and restores 220 life points.
The Alms of Death	Necromancy	1-3	Visible	Also decreases Magic level by 1–6 levels.
Necromancy potion	Necromancy	1 + 8%	Visible
Super necromancy	Necromancy	2 + 12%	Visible
Extreme necromancy	Necromancy	3 + 15%	Visible
Wendlewick ale	Prayer	2 + 1%	Visible
Wendlewick ale (m)	Prayer	3 + 1%	Visible
Ranging potion (or mix)	Ranged	1 + 8%	Visible	Mix also heals 30 to 60 life points.
Super ranging potion (or mix)	Ranged	2 + 12%	Visible	Mix also heals 30 to 60 life points.
Extreme ranging	Ranged	3 + 15%	Visible	Requires level 92 Herblore to make.
Wild pie	Ranged and Slayer	4, 5	Visible	Also heals 850 life points per bite.
Wilder pie	Ranged and Slayer	5, 6	Visible	Also heals 1,100 life points per bite.
Geyser titan	Ranged	1 + 3%	Visible	Speak to the Geyser titan to obtain the boost.
Ranger's aid	Ranged	2	Visible	Reduces Defence by 5 levels.
Mature ranger's aid	Ranged	3	Visible	Reduces Defence by a 7 levels.
Grand ranging potion	Ranged	2 + 14%	Visible
Exuberry	Ranged	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Supreme ranging potion	Ranged	4 + 16%	Visible	Recipe needs to be bought.
Talking to Oldak	Runecrafting and Magic	+2 or -2	Visible	Also possible no stats are boosted.
Slayer's respite	Slayer	2	Visible	Also reduces Attack and Strength by 2 levels and restore 590 life points.
Mature slayer's respite	Slayer	4	Visible	Also reduces Attack and Strength by 2 levels and restore 620 life points.
Runecrafting potion	Runecrafting	3	Visible
Super runecrafting	Runecrafting	5	Visible
Extreme runecrafting	Runecrafting	15% of level + 3	Visible	Requires level 91 Herblore to make.
Blisterberry	Strength	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Blurberry Special/Premade Blurberry Special	Strength	7	Visible	Also reduces Attack by 5.
Drunk Dragon/Premade Drunk Dragon	Strength	7	Visible	Also reduces Attack by 4.
Wizard Blizzard/Premade Wizard Blizzard	Strength	6	Visible	Also reduces Attack by 4.
Short Green Guy/Premade Short Green Guy	Strength	4	Visible	Also reduces Attack by 3.
Asgarnian ale	Strength	2	Visible	Also lowers Attack by 4 levels and restores 240 life points.
Mature Asgarnian ale	Strength	3	Visible	Also lowers Attack by 6 levels and restores 270 life points.
Beer	Strength	1 + 2%	Visible	Also reduces Attack by 1 + 6%. Is available to free players.
Dragon bitter	Strength	2	Visible	Also reduces Attack by 4 levels and restore 390 life points.
Mature dragon bitter	Strength	3	Visible	Also reduces Attack by 6 levels and restore 420 life points.
Grog	Strength	4	Visible	Also reduces Attack by 7 levels and restore 100 life points.
Braindeath 'rum'	Strength, Necromancy, Mining	Strength +3, Necromancy +3.5%, Mining +1	Visible	Decreases Attack, Magic and Herblore by 5%. Decreases Defence and Agility by 10%. Also restores 10% maximum life points.
Karamjan rum	Strength	5	Visible	Also reduces Attack by 4 levels and restores 625 life points.
Brandy / Gin / Vodka / Whisky	Strength	5	Visible	Also reduces Attack by 4 levels and restores 200 life points.
Strength potion (or mix)	Strength	1 + 8%	Visible	Mix also heals 30 life points. Strength potion is available to free players.
Super strength (or mix)	Strength	2 + 12%	Visible	Mix also heals 30 to 60 life points.
Extreme strength	Strength	3 + 15%	Visible	Requires 89 Herblore to make.
Obsidian Golem scroll (Volcanic Strength)	Strength	9	Visible	Special move of the Obsidian golem.
Black warlock jar	Strength	20%	Visible	Must be used on another player. Boost affects the player it is used on.
Grand strength potion	Strength	2 + 14%	Visible
Supreme strength potion	Strength	4 + 16%	Visible	Recipe needs to be bought.
Musaberry	Summoning	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Bandit's brew	Thieving, Attack	1 + 1%	Visible	Reduces Strength and Defence by 6-8 levels.
Magpie scroll (Thieving Fingers)	Thieving	2	Visible	Special move of the Magpie.
Spring sq'irkjuice	Thieving	1	Visible	20% run energy boost.
Autumn sq'irkjuice	Thieving	2	Visible	30% run energy boost.
Summer sq'irkjuice	Thieving	3	Visible	40% run energy boost.
Sourberry	Thieving	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Axeman's folly	Woodcutting	1	Visible	Also reduces Attack and Strength by 3 levels and restores 490 life points.
Mature axeman's folly	Woodcutting	2	Visible	Also reduces Attack and Strength by 4 levels and restores 520 life points.
Rosaberry	Woodcutting	2	Visible	Requires access to The Arc. Also reduces Defence by one level.
Beaver	Woodcutting	2	Invisible	Familiar must be summoned.
Woodcutting potion	Woodcutting	3	Visible
Super woodcutting potion	Woodcutting	5	Visible

Notes

A percentage boost is always rounded down, except for the mud bath, which is rounded up.
A reduction of x or more levels means the actual amount reduced depends on the player's level in the skills listed.

Update history

This information has been compiled as part of the update history project. Some updates may not be included – see here for how to help out!

patch 19 August 2019 (Update):
- Boosting your Slayer level to kill NPCs above your base level now awards the correct amount of Slayer XP while on task.

patch 4 February 2014 (Update):
- Stat boosts are no longer reset when levelling up.