Is it permissible to have the nasal flu vaccine?

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Is it permissible to have the nasal flu vaccine?

Is gelatine halal?

Many people are asking if they can let their children have the nasal flu vaccine as it contains porcine gelatine?

The nasal vaccine

Each year, the influenza virus, the flu, causes illness, time off work, hospital admissions and deaths. This year, with the Coronavirus pandemic, it is even more important to ensure we look after ourselves and take the flu vaccine if eligible.


According to nhs.uk:
Flu vaccination is important because:

if you’re at higher risk from coronavirus, you’re also more at risk of problems from flu, if you get flu and coronavirus at the same time, research shows you’re more likely to be seriously ill.

Interestingly, it has been postulated that cross-reactivity between the influenza virus and Coronavirus may help to provide some immunity and/ or lessen the severity of a SARS-Cov-2 infection.

There are 2 main routes of receiving the flu vaccine, by injection or by nasal spray. The nasal spray is reserved for children only, who can spread flu quite quickly, with a few exceptions. The nasal flu vaccine is considered effective at preventing flu and us easy to administer amongst children. But is it permissible?

The ‘no’ camp

There is a difference of opinion among scholars.

Imams Shafi’, Maliki and Hanbali held that once something is impure then it is always impure.

The ‘yes’ camp

The Hanafi school of thought says that if the state of a substance has changed, then the impure becomes pure.

An example of where an impure substance becomes pure is vinegar which is derived from fermented alcohol but becomes permissible as it undergoes a process of change.

The Fiqh principle of change

The Arabic term for transformation is Istihaala.

Istihalah, from the Fiqh point of view, is defined as changing the nature of a substance so that it is completely transformed physically and chemically.

Who is in the Yes camp?

According to the Islamic Organization for Medical Science gelatine undergoes a complete transformation and is different from the substance from which it was derived.

Its chemical properties differ from the original substance from which it was extracted. The structure of the molecules is different. [i]

This means that according to the Hanafi opinion, gelatine is halal, regardless of whether it was derived from animals that are considered halal or haram, including pigs, and animals not slaughtered by halal methods.

Based on the Hanafi opinion, foods and medication containing gelatine, even porcine gelatine are permissible.

And it is permissible to take the nasal flu vaccine and other medication which contain gelatine.


[i] A chemical change, also known as a chemical reaction, is a process in which one or more substances are irreversibly altered into one or more new and different substances. In other words, a chemical change is a chemical reaction involving the rearrangement of atoms. Examples of chemical reactions include photosynthesis, rusting and burning.

Hydrolysis is a type of decomposition reaction where one of the reactants is water; and typically, water is used to split molecules by breaking chemical bonds in the other reactant.

Examples of hydrolysis reactions include making soap. The saponification reaction occurs when a triglyceride (fat) is hydrolyzed with water and a base (usually sodium hydroxide, NaOH, or potassium hydroxide, KOH). Fatty acids react with the base to produce glycerol and salts (which becomes soap).

Gelatine is a form of hydrolysed collagen which means it has been broken down.

To convert collagen from animal parts into gelatine, several processes are used that break the bonds of collagen and release certain amino acids. Extraction of gelatine in food manufacturing is usually done using hot water and acid solutions to hydrolyze collagen into gelatine. Then certain filtration, clarification and sterilization processes usually take place to form the dried, final product, depending on how it’s sold.

Gelatine forms a gel-like substance when mixed with water, whereas collagen does not.

Though the amino acids are the same (as we only have a limited number of those as building blocks of all proteins), there is a chemical splitting of bonds to release certain amino acids, which change the structure. The process is largely irreversible.

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