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About Michael Anisfeld
(Top Expert on this page)

Expertise
Disclaimer: SORRY BUT I DO NOT ANSWER QUESTIONS RELATED TO: DRUG ACTIONS/INTERACTIONS, INTERNET DRUG PURCHASES, RESULTS OF DRUG TESTS, IDENTIFYING DRUGS (FOR WHICH YOUR LOCAL PHARMACIST IS THE BEST PERSON TO CONSULT). My expertise is answering questions relating to pharmaceutical manufacturing and quality technologies, drug regulations and specifically GMP requirements

Experience

Past/Present Clients
UN agencies (UNFPA, UNICEF, UNIDO)
Governments (Australia, Canada, India, United Kingdon, United States
Companies - over 200 companies in 37 countries

   

You are here:  Experts > Health/Fitness > Pharmacology > Pharmaceuticals

SubjectDate AskedExpert

Wellbutrin XL 225mg7/3/2009Dr Mohd Tariq Salman
  Q: For a few years I've been taking Wellbutrin XL at one of two dosages for months at a time, 150mg or ...
  A: Wellbutrin XL 225mg is not available anywhere in the world. Wellbutrin XL and Wellbutrin SR are ...
Men's Health7/2/2009Dr Mohd Tariq Salman
  Q: Is propecia safe?
  A: All drugs may cause side effects and you have to weigh the potential benefits versus the potential ...
Pharmaceuticals7/2/2009Michael Anisfeld
  Q: Have a nice Day My question is: Can we give Retesting date to Raw Material beyond its expiry date ...
  A: The only GMP providing guidance on this, worldwide, is the Canadian GMPs. They state that if the ...
Pharmaceutical Industry7/1/2009Dr Mohd Tariq Salman
  Q: What would happen to the Pharmaceutical Industry, especially someone who has M.S. in Pharmaceutical ...
  A: Pharmaceutical Industry is an evergreen field and one of the industries which are least effected by ...
Wellbutrin dose6/30/2009Dr Mohd Tariq Salman
  Q: Over the years I have taken two different dosages of Wellbutrin XL: 150 and 300 mg. I've generally ...
  A: instead of WELLBUTRIN XL you can take WELLBUTRIN SR 100 mg twice daily. This will give you 200mg ...
Expiry date vs date of manufacture vs shelf life6/24/2009Michael Anisfeld
  Q: My question is regarding expiry dating which is usually expressed as month and year. If a pharma ...
  A: Kevin: The date of manufacture is the date that the ingredients first get to meet each other, say ...
Reprocess of nearing expiry drug substance6/22/2009Michael Anisfeld
  Q: One of my friends wants to reprocess the nearing expiry drug substance. If he does, then What would ...
  A: you can do this on two conditions: a. you have stability data (at a minimum 6 months accelerated ...
pharmacy related6/16/2009Dr Mohd Tariq Salman
  Q: actually i m here at onsite and i have tab of erythromycin of government supply of mfg date of ...
  A: expiry date depends on salt active ingredient used, type of tablet and manufacturer. In this case ...
Nitrofur6/13/2009Dr Mohd Tariq Salman
  Q: Should a woman who is taking Nitrofur continue to breastfeed an infant who is two weeks old? What ...
  A: Nitrofurantoin is excreted into human milk. It is considered compatible with breast-feeding by ...
drug interactions with methadone6/8/2009Dr Mohd Tariq Salman
  Q: what are the drugs that you cannot take while on methadone? I know there are some that will start
  A: 1. Opioid Antagonists, Mixed Agonist/Antagonists, and Partial Agonists Patients maintained on ...
Antibiotics6/4/2009Dr Mohd Tariq Salman
  Q: . I recently had my wisdom teeth (all 4) pulled. that went well so far and i haven't had any issues. ...
  A: You are most probably having oral candidiasis, which develops due to alteration of normal oral ...
Microbiological testing of pharmaceutical stability samples11/5/2008Michael Anisfeld
  Q: I saw your answer regarding the frequency of testing for stability and wonder if microbiological ...
  A: If the study is to establish an expiration date for a new product, then microbial testing is ...
zaleplon10/30/2008Michael Anisfeld
  Q: Can you tell me how to obtain zaleplon in Canada? It used to be available as Starnoc, but appears ...
  A: Humble and profuse apologies. I was mixing the drug in my mind with Zolpidem (sold here as Ambien) ...
zaleplon10/29/2008Michael Anisfeld
  Q: Can you tell me how to obtain zaleplon in Canada? It used to be available as Starnoc, but appears ...
  A: Zaleplon is sold in the USA as Ambien. It is banned in Canada and is not available there. I ...
Vertical form fill seal machines10/7/2008Michael Anisfeld
  Q: We are trying to place powdered nutritional supplements into a 3 or 4 sided pouch. It is a fine ...
  A: Vicki: Many moons ago I used to run a powder fill line for pharmaceutical products, and will share ...
microbiological testing in pharmaceuticals9/23/2008Michael Anisfeld
  Q: Can I get rid off Autoclave if I use 'ready to use media / plates/ tubes' in the microbiological ...
  A: JK: I wish you could, but have you thought about how you will decontaminate the growth plates after ...
Brand Name Synthroid vs. Generic9/22/2008Michael Anisfeld
  Q: My doctor, who I respect, and his entire endocrinology practice at a major Baltimore hospital, ...
  A: As the FDA has approved generic Synthroid as bio-equivalent to the original brand, you will have a ...
Freeze Thaw Study9/20/2008Michael Anisfeld
  Q: I would like to know how is freeze/thaw study carried out for Liquid oral products with references, ...
  A: Take your liquid product, cool at -5oC to freeze, and hold frozen for 24 hours; then thaw at room ...
Drug Safety9/18/2008Michael Anisfeld
  Q: I get extremely intense anxiety when flying on airplanes. A few years ago, I went to a doctor and ...
  A: All drugs degrade from the date of manufacture, losing effectiveness and potentially building up ...
Clonidine and Atenolol manufacturing9/12/2008Michael Anisfeld
  Q: I have a question about these two medications. My mother takes both for her high blood pressure and ...
  A: Sheryl: Welcome to the wonderful world of generic drugs. When the product patent expires, ...
Quality Index in pharmaceuticals8/21/2008Michael Anisfeld
  Q: What is quality index.pls give the importance of it.Is their any reference for this.
  A: There is no uniform definition, and many people use the term in may different ways. As examples, ...
writing the dossier when only CEP is available8/12/2008Michael Anisfeld
  Q: I have a problem, I need to write a registration documentation in EU format (not CTD) - the IIF ...
  A: I commiserate with you, having been in the same situation a few years back. The EU reviewers demand ...
stability/balance calibration7/26/2008Michael Anisfeld
  Q: stability what to do if our product shows significant change in accelerated condition calibration ...
  A: stability - by "change" in stability - do you mean that the product does not meet its specification ...
generic drugs -- not quite the same7/23/2008Michael Anisfeld
  Q: Are you aware, that by law, generic drugs do not have to bioidentical? Meaning they can contain ...
  A: Lori: Sorry, but I completely disagree with you. According to the Good Manufacturing Practices ...
Hi7/10/2008Michael Anisfeld
  Q: Can you suggest me what is most acceptable date format or most suited date format in Industry ...
  A: Most of the industry uses the ISO Standard date format. This is YYYY-MMM-DD. So today's date July ...
Hi7/10/2008Michael Anisfeld
  Q: Not for any question, But I got your profile so contacted We met at Artemis Biotech, Hyderabad; ...
  A: Soni: Yes indeed I do remember you. What are you doing now and how is it going? Incidentally, what ...
Sampling conditions for non sterile raw materials7/10/2008Michael Anisfeld
  Q: I wanted to know if there are any environmental conditions that should be adhered to for non ...
  A: Sampling for chemical testing is routinely performed in a Class 100,000 (ISO Class 8) environment. ...
Stability samples transfer7/9/2008Michael Anisfeld
  Q: I would like to know is it ok to transfer a stability study from one country to another during the ...
  A: In principle I do not see any problem with this except one. The transportation issues are not of ...
FBD bag6/6/2008Michael Anisfeld
  Q: I would like to know about the "material Of Construction" (MOC) of FBD bag. Thank you very much, ...
  A: You must, I repeat MUST, personally audit the bag fabricator - and take someone with you who knows ...
Shelf life of Chantix...5/20/2008Michael Anisfeld
  Q: My girlfriend is taking Chantix. She has a prescription of course (and it seems to be working!). ...
  A: Look at the outside of the carton the Chantix came in. If the expiration date is still within its ...
amoxicillin/clavulanic acid5/20/2008Michael Anisfeld
  Q: just wanted to ask what exactly is this medication. I tried to look it up but couldn't find ...
  A: It is a very effective broad spectrum antibiotic. If you Google Augmentin, (make sure you spell it ...
new energy vitamin5/2/2008Michael Anisfeld
  Q: what is the best way to get my new energy vitamin produced. I know there are thousands of vitamin ...
  A: The best way would be to find an existing Vitamin manufacturer who is willing to engage in contact ...
Bulk product stability5/1/2008Michael Anisfeld
  Q: We are using Hexagonal Corrugated boxes with double lined polybags with a desccant bag in between to ...
  A: Sorry, but I need clarification in order to answer. The Hexagonal Corrugated Boxes - are they used ...
Stability4/30/2008Michael Anisfeld
  Q: "Dear Mr.Michael/ Ihope that you are in the best mode: I have two questions: 1)If time for ...
  A: Q1. Seems like you are tying yourself in knots about this. The key question you really need to ask ...
Stability4/30/2008Michael Anisfeld
  Q: "Dear Mr.Michael/ Ihope that you are in the best mode: I have two questions: 1)If time for ...
  A: Moayyad: You hope I am in the "best mode" - I am not sure what you mean my this, but I am fine - ...
Raw Material storage requirements4/29/2008Michael Anisfeld
  Q: what is meant by "Store in cool and dry place" in pharmaceutical raw material storage. We often use ...
  A: Irfan: According to USP definitions (USP31): "Cool" — Any temperature between 8oC and 15oC (46 ...
test or no the bulk?4/10/2008Michael Anisfeld
  Q: A bulk of tablets was made 2 months ago. It has been waiting since then to be put in the primary ...
  A: FDA allows up to 30 days storage without the need for supporting stability data on the bulk. as such ...
preparation of two batches4/7/2008Michael Anisfeld
  Q: please is it comply to GMP to prepared batche in one holding tank and filled in to two different ...
  A: A batch is defined as a homogenous mixture. As such your single tank formulation is ONE batch. When ...
Endotoxin3/20/2008Michael Anisfeld
  Q: What is the significance of testing endotoxins in parentral preperation .the normal limit is found ...
  A: The presence of endotoxins can cause a cascade of body reactions/degradations leading to death ...
bulk stability3/12/2008Michael Anisfeld
  Q: We would like to complete bulk stability on our drug product (and/or intermediates) in small fibre ...
  A: If you drug product is an "active pharmaceutical ingredient" (API), then you can keep your stability ...

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