Give it tons of oran berries, just like your screen says.
Route 47 is the best place to find miltank in heartgold.
No you do not need to help the miltank it is recommended though. You need to give it 7 oran berries then you will get a Seal Case and some seals. Which can customize the way your Pokemon enters the battle.
Miltank is a Normal type pokemon.
You can't capture miltank in ruby only colosseum can.
first go to the miltank cottage give the sick miltank about 4 or 5 oran berries and then talk to the girl on the left of it
After getting the seal case from healing the sick Miltank in MooMoo Farm, three seals can be acquired each day from a girl in Olivine City.
feed oran berries to miltank named moomoo
You can find Tauros outside Olivine close to the Miltank farm
Several Pokemon do not evolve or have any pre-evolved forms. Miltank is one of these. It is also one of the only ones that are only females.
Regular BERRIES. (Oran Berries in HeartGold).
Whitney uses Clefairy and Miltank in Pokémon Gold/Silver/Crystal/HeartGold/SoulSilver and in the anime she has a Nidorina, a Clefairy and a Miltank.
A girl in Olivine City will give some to you if you have the Seal Case, which you can get by healing the Miltank on Route 39. Heal the Miltank by giving it Oran Berries.
Near Olivine city you have a miltank farm. There are two girls with a sick miltank. You need a lot of oran berries to heal it. (Be carefull the oran berries are all gone before you healed the miltank because then you have to find another oran berry. It goes faster if you plant them in a berry pot. After you healed the miltank you get a seals case from one of the girls. In Olivine city there is a house where is little girl who gives you every day a few seals. I hope it helped :) xxx
Ice Punch costs 64 BP at the Battle Frontier in HeartGold and SoulSilver.
You can find it in a house on the route just above olivine city.
Give it tons of oran berries, just like your screen says.