from: wiki how
Prescription bottles have strong adhesive to ensure that the label doesn't fall off and potentially confuse what the contents really are. If you're planning on reusing the bottle for craft or other projects and need to get the label off, there are various ways of going about this that aren't too hard to use.
Put the bottle into the door of the freezer for 10 minutes or so. The freezing time can be extended; the idea is to make the adhesive brittle, making it easier to break away from the bottle. Remove from the freezer when you are satisfied that the adhesive is frozen enough.
Slowly start peeling the label off from the corner.
Continue peeling the label until it all comes off in one clean piece.
I tried this one. No soap. The label did not come off cleanly, but rather in tiny bis, leaving a layer of paper and the adhesive on the bottle.
Choose a bottle of essential oil. The best choices are tea tree oil, lavender oil or eucalyptus oil, because these are the cheapest ones.
Tip a few drops of essential onto a cleaning cloth, paper towel piece or tissue.
Rub the wet area of the cloth or towel over the label. Be sure to cover it as much as possible with the oil, paying particular attention to the edges.
Remove the label. The oil will have loosened the adhesive attaching the label to the bottle.
Repeat if needed, then wash in warm, soapy water to remove any oiliness left on the bottle.
Soapy water soak
Place the bottle into a tub of hot soapy water. Let it soak until the water is lukewarm.
Remove from the water. Peel off as much as the label as possible. It is probable that it won't all come off.
Return to the tub with a new lot of hot soapy water. Allow to soak again until lukewarm, and repeat removing the label. Allow to dry.
Use an essential oil (see above) or a goo remover (see below) to get the remaining adhesive off the bottle. Then wash one more time to remove the oiliness.
Purchase a product that contains orange oil. These products can usually be found at hardware or department stores, as well as some auto stores and anywhere that has a good selection of cleaning products.
Follow the instructions on the packaging. Generally, you'll need to spray the product onto the label, wait a set time, then proceed.
Remove the label. Repeat if needed, then wash in warm, soapy water to remove any oiliness left on the bottle.
Do not reuse a prescription bottle for medication. Any medication should be clearly and safely labeled. Only use these bottles for craft or as small storage canisters for things such as buttons, pepper and salt sachets for camping, safety pins, etc.