Iirc, mast hasn’t been made in a pharma prep for sometime, even though it’s still approved in most countries pharmacopoeia. As such, UGLs would be the primary source. Here in the US, Mast P tends to run around $45-55 per gram (100mg/ml 10 ml) and Mast E around 55-65 per two grams (200mg/ml).
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