Most stores that carry melatonin only stock the 3 milligram dose; Rite Aid carries both the 3 and 10 milligram doses but the 10 milligram dose can be extremely hard to find in some areas. There is only one Rite Aid location in a 25 mile radius that stocks the stronger dose. They do sell it online at their website but when I buy things like this I like to buy them in person so I can check the bottle, safety seal and expiration date. Compared to other brands of melatonin, this performs the same and does help you relax, fall asleep and stay asleep. If you are used to taking the 3 milligram dose and then switch to the 10 milligram dose you may feel groggy or drowsy in the morning. This could happen for two to ten days; every person is different and your body might need more time to get used to the dosage. If it is something that is a long term problem you can split the 10 milligram pills so you are only getting half a dose. That makes them a little stronger than the 3 milligram pills but not as strong as the 10 milligram pills. As far as price is concerned, for being a store brand product these are more expensive than other brands that I buy when I need to use something to help me fall asleep or stay asleep. I buy the stronger dose from Rite Aid because it's hard to find melatonin in that dose anywhere else. These are easy to swallow and start working in about fifteen to twenty minutes; they do not completely knock you out so if the phone rings you are going to hear it. You might have a little trouble having a conversation on the phone if you decide to answer it but you aren't going to be completely sedated to the point where you can't respond if someone tries to wake you up.