Castor oil USP

Question : do you have to use USP castor oil for laxative purposes, or can you use any castor oil? I would appreciate any members' comments. Thanks.

You can use only alimentar castor oil.

There are many castor oil for cosmetics purpose, you can't drink that kind of castor oil.

Only for my nails

Question : do you have to use USP castor oil for laxative purposes, or can you use any castor oil? I would appreciate any members' comments. Thanks.

You need pharmaceutical grade castor oil, such as USP (United States Pharmacopeia) or BP (British Pharmacopoeia).

We use it as a top end lube on big engines it smells great also used in two strokes and small nitro engines

@Tummypro - Used to be sold here in the UK as Castrol R available in straight SAE 30 & 40 viscosities - mostly used for racing engines as far as I know but in the 70s I used to attend lots of motorcycle road race meetings, most of the competitive bikes then were two strokes but even the four stroke riders used it. I loved the smell so much I used to add an eggcupful to the petrol tank on my Suzuki just for the aroma! The only problem I ever heard of with it was a tendency to create gum or varnish within the engine which I guess didn't matter too much if they were subject of lots of TLC maintenance. I think with the onset of synthetic oils from maybe the 90s it gradually disappeared. Shame, I loved that smell!

Thanks to all who replied for their kind advice.

Klotz still makes it

This may be a little off main topic, but has anyone used castor oil (presuming to be pharmaceutical grade) in an enema solution? If so, how did it work and how much did you use per quart of enema solution? After effects?

I would guess you would have to use a fairly strong soapy solution to get the castor oil to disperse/dissolve in the mixture, else it would just float as an oily layer on top. But I'm just guessing here - years since I last handled castor oil.

This may be a little off main topic, but has anyone used castor oil (presuming to be pharmaceutical grade) in an enema solution? If so, how did it work and how much did you use per quart of enema solution? After effects?

Castor oil injected directly into the colon is inert—it’s just an expensive lubricant. It needs to pass through the small intestine to be activated as a laxative,