Famvir is an anti herpes drug, mostly used to treat herpes zoster. Herpes zoster is one of the most common forms of herpes and is also known by the common name of “shingles”. Famvir was invented in 1994 and generic versions became available eleven years later, in 2007. Two companies, TEVA Pharmaceutical and Mylan Pharmaceutical, make most of the drug. If you bought a Famvir tablet, chances are you got it from one of them. This is common in the pharmaceutical world and is nothing to be concerned about. Famvir can be eaten with food, but taking extra pills will not enhance its efficacy.
Famvir’s primary ingredient is famciclovir, with a molecular formula of C14H19N5O4. Famciclovir is a pale yellowish white solid substance that quickly dissolves in water. Famvir tablets usually contain 250mg of famciclovir, but small (125mg) and large (500mg) tablets. The tablets also contain a number of secondary ingredients, including hydroxypropyl cellulose, hydroxypropyl methylcellulose, lactose, magnesium stearate, polyethylene glycols, sodium starch glycolate and titanium dioxide. This list might seem scary, but most of these are simply to accelerate the famciclovir’s dissolution in the stomach. Most drugs contain a large number of chemicals.
People have reported allergic reactions after using Famvir. The symptoms of an allergic reaction are pretty simple: hives, breathing issues, and swelling. If you’ve taken Famvir and you have these symptoms, you might be allergic to one or more of the drug’s ingredients. If you know you’re allergic to penciclovir (usually called Denavir), you will probably be allergic to Famvir as well. People with liver disease, kidney disease, weak immune systems, lactose intolerance, or glucose intolerance should not take Famvir either. Pregnant or breast-feeding mothers should avoid Famvir too, as it is not known how the drug affects babies.
Famvir also has a number of major side effects, including muscular weakness, confusion, puking, and rapid or faint heartbeat. Less obvious symptoms are infrequent urination, weight gain, shortness of breath, and lost appetite. However, these are very serious and if you have one of these side effects, call a doctor at once. Do not wait, because the symptoms will grow worse without treatment. As with most medical emergencies, time is of the essence. Again, these side effects are potentially lethal (if not treated). Famvir should not be taken with other drugs, as interactions are unknown and can be dangerous.
Famvir is available online at websites such as auchemist.com or chemistwarehouse.com. Delivery from these sites follows standardized shipping procedures — you can select a carrier at checkout, pay extra for overnight shipping, and so on. At ten bucks a pill, Famvir is fairly expensive. However, buying in bulk can reduce this to seven dollars, and buying larger tablets can knock the price down to just five dollars per pill. Generic forms of Famvir are much cheaper and cost less than a dollar per tablet. Generic forms are the same drug, just without the branding. Famvir does not require a prescription to purchase. It is a non-addictive drug.