Here is a source stating prices are declining...[www.marketwatch.com]
Quotes from source..."The government on Tuesday said prescription prices sank 1% in February, marking the biggest one-month decline ever."
"What’s more, the cost of prescription drugs over the past year have dropped by 1.2%. That’s the biggest 12-month decline since 1972."
Technically Trump is correct. The question now is can the declining trend continue? The source addresses this question from a economist perspective. But what it omits is Trump as a business person realizes price is more than just the monetary value in money paid for a product.
He realizes that changing market conditions,competition,trade, risk considerations, input cost,etc. can effect pricing.