Here is a comprehensive kit list for the Annapurna basecamp trek.
1/2 light weight short sleeved sports tops
1 thermal long sleeved top
1 pair of thermal trousers or leggings
1 pair of trekking pants, preferably ones that zip off into shorts
3 pairs of thermal light weight socks
1 comfy warm pants to sleep in
1 cotton bed top
1 woollen bed socks
1 warm waterproof jacket
1 warm padded down jacket for higher altitude
1 spare shoes to wear when not trekking (trainers or sandals)
1 good quality trekking boots
Use your common sense with how much underwear to bring, buckets to wash clothes in are provided at some of the tea houses so you don't need a pair for everyday of your trek. Three should be enough.
Gloves and hat (these can be purchased in the villages hand knitted. A better option as they give business to locals, are made out of yak wool and always look great)
Sunglasses (these have to have UV protection in, you can't use the 100 rupee ones you brought in Goa)
2 water containers (one for purifying water, the other for drinking)
50 water purification tablets (water bottles are expensive on the mountain and harming the environment, so do your bit and use tablets and a reusable container)
Trekking poles are up to you. They take away 30% of the impact on your joints when going down hill so it's best to take a look at your route and make a decision.
Blister plasters (god help you if you forget these)
Antiseptic wound wipes (life saver and light to carry)
Scissors and tweezers
Paracetamol / ibuprofen
Altitude sickness tablets (these can be purchased in Manang, one of the highest villages on the Annapurna circuit.)
Bandage incase of broken limb
Toiletries (don't over load on these, a bar of organic soap will do most jobs adequately)
4 Washing powder sachets (as stated before some teahouses offer washing facilities)
Toilet roll or tissues
Sanitary products / birth control pill (for ladies)
Light weight, quick dry towel
Sleeping liners. Tea houses provide blankets and bedding but these aren't always clean. They are small and extremely light weight so worth bringing just to know you aren't going to wake up covered in bed bug bites.
Odomos natural bug repellent with citronella
The higher you go the more expensive food is as it has to be carried up the mountain. It is worth stocking up on natural energy bars like Mountain Man Granola bars before you leave to keep costs down and healthy energy up!
This is of course all subjective, you can take as much or as little as you want as you are going to be the one who carries around. However, from personal experience and research this list should serve you well.