Commonly asked questions about Methylene Blue

Where should we buy high quality Methylene Blue?

You can purchase Methylene Blue on Our products are tested for heavy metals and we ship the products with the certificate of analysis.

Why should I purchase MB Sure Methylene Blue?

Our product is the only one that is:

  • We take complete responsibility of ensuring the delivery of the product to your door step.
  • 3rd party tested by a certified lab in the US.
  • Certified to be highly pure with minimal heavy metals.
  • Very competitive in pricing.
  • Fast delivery.
  • Excellent customer service

Finally, we pride on being ethical and we do not peddle false narratives about other brands and always back up our claims with evidence.
We find our resources are better spent in improving our product & services than pulling down other brands with fake/misleading campaigns.

Do you provide global shipping?

We ship Methylene Blue to all countries globally including the UK, Australia and New Zealand, Indonesia. 

I am looking to order from within the EU, do I need to pay import customs?

No. We ship locally to all EU countries (barring a few islands). So you do not need to pay import customs.

Should I purchase MB Sure Powder or liquid Methylene Blue?

MB Sure Methylene Blue powder works out to be cheaper than liquids due to a variety of reasons including shipping, packaging and handling. So if you are ready to prepare the concentration yourself, powder will work out to be better. Also, powder can be stored for 3 years and since we ship in multiples of 1 gram, it does make handling very easy as you only need to mix what you plan to use.

However, if you need the convenience of a readymade solution, then liquids are better.

How do I make 1% (w/v) Methylene Blue solution?

Mix 1 gm of Methylene Blue with 100 ml of water to make 1% solution

How do I make 0.1% (w/v) Methylene Blue solution?

Mix 1 gm of Methylene Blue with 1 liter of water to make 0.1% solution

What is the Blue Bottle Experiment?

It is an experiment to showcase how oxidation, reduction and a catalyst work. It forms colorless Methylene Blue solution.

  • Take 1 ml of 1% Methylene Blue.
  • Add it to a glass of water along with a spoon of sugar and a pinch of potassium (potassium is optional).
  • Stir well - you will get colorless Methylene Blue.

Reason : Methylene Blue reacts with oxygen in the air and undergoes oxidation forming colorless methylene blue. It will revert to its original state as more oxygen is mixed.

You can achieve the same result if you mix ascorbic acid instead.

How long can I store the solution?

Methylene Blue is a stable compound with a long shelf life. It should however, be stored in a dark, dry and a cool place. Ideal setting would be store it in a dark place around 15-20 degrees Celsius. In powder form, it can easily be stored up to 3 years.

How can I order bulk (more than 100 gms) quantities?

Please write to and we will be happy to assist you.

Which currency are all the prices in?

The prices are in US Dollars.

What is the shipping cost?

The shipping cost is 10 USD.

Which payment methods do you support?

We currently offer PayPal and Stripe as the payment option. 

My payment was declined, what should I do?

Please contact your bank to see if your bank is blocking the transactions.

If you have attempted payment more than once (and your bank has also confirmed that it is not blocking the transaction), you can use the below mentioned direct links to attempt payment using a credit card or Apple Pay. Please drop us a note via the contact form after you pay using the below link.

If the above do not work, then please do reach out to us via the Contact Us form. If you write to us we will be able to provide you with local options for fund transfer.

How do I pay with my credit card?

It may be a bit tricky to find out how to pay with a credit card (and not Paypal). Below are the steps to pay via credit card. 

1. Browse to the product you wish to order and click Add to Cart

  • This will open a fly out with the product added

2. Click View Cart

3. Click on Checkout

4. Add your shipping information and click Continue to shipping

  • In case you have already added your shipping details, this step will be skipped

5. Click Continue to payment and add your credit card details

6. Click Complete order

How do I track my order?

Tracking details are shared with the buyer via email once the product is shipped. So you should be able to track the order using the same.

How long does the delivery normally take?

We have manufacturing & storage units in Canada, Australia, USA, UK, France and India. We try to fulfill the order from a warehouse which is most efficient for your order so that you get the fastest possible delivery with least possible issues. However, you should account for a 2-3 weeks of delivery time especially if its a cross border shipment.

What does USP Grade Methylene Blue mean?

USP is a measure of purity - it means that the product quality is tested and heavy metals/impurities are found to be equal and/or lower than what is recommended by USP. A batch heavy metal analysis is provided with every order.

Do you sell on Amazon?

We have approved resellers on Amazon in some markets but they are always called CZTL - so if you are purchasing via Amazon to ensure you get a genuine product always select CZTL as the Seller.

There are fake sellers on Amazon UK currently so please beware.