Dr. Crippen thinks Big Pharma is to blame:
Dr Crippen’Â’s old fashionedÂ” treatment for blood pressure costs a few pence a month, and the drugs he uses (such as beta-blockers and diuretics) have been around for years. They have a proven safety record. They are not going to produce any surprises. The only problem is that they do not offer any profit to the big drug companies.