- Neomycin/Polymx/HC - Information from the RxList.
- NicoDerm CQ - SmithKline Beecham consumer site detailing the use of "the patch".
- Nitrates - Offers information about coronary artery disease, its therapy and nitrates. Also contains information on products by Schwarz Pharma.
- Nitroglycerin - Information from the RxList.
- Nizatidine - Information from the RxList.