SMITH BARNEY INVESTMENT FUNDS INC.
(the "Company")
on behalf of
SMITH BARNEY INVESTMENT GRADE BOND FUND
(the "Fund")

Supplement dated March 11, 1998 to
Prospectus dated April 30, 1997



Pursuant to shareholder approval on March 9, 1998, the following supplements 
the disclosure set forth in the Prospectus under "Investment Objective and 
Management Policies:"

Interest Rate Futures Contracts 

	The Fund may purchase and sell interest rate futures contracts ("futures 
contracts") as a hedge against changes in interest rates.  A futures contract 
is an agreement between two parties to buy and sell a security for a set price 
on a future date.  Futures contracts are traded on designated "contracts 
markets"  which, through their clearing corporations, guarantee performance of 
the contracts.  Currently, there are futures contracts based on securities 
such as long-term Treasury bonds, Treasury notes, GNMA Certificates and three-
month Treasury bills.

	Generally, if market interest rate rates increase, the value of 
outstanding debt securities declines (and vice versa).  Entering into a 
futures contract for the sale of securities has an effect similar to the 
actual sale of securities, although the sale of the futures contract might be 
accomplished more easily and quickly.  For example, if the Fund holds long-
term U.S. government securities and Mutual Management Corp. (formerly Smith 
Barney Mutual Funds Management Inc.) anticipates a rise in long-term interest 
rates, it could, in lieu of disposing of its portfolio securities, enter into 
futures contracts for the sale of similar long-term securities.  If interest 
rates increased and the value of the Funds securities declined, the value of 
the Funds futures contracts would increase, thereby protecting the Fund by 
preventing the net asset value from declining as much as it otherwise would 
have.  Similarly, entering into futures contacts for the purchase of 
securities has an effect similar to actual purchase of the underlying 
securities, but permits the continued holding of securities other than the 
underlying securities.  For example, if Mutual Management Corp. expects long-
term interest rates to decline, the Fund might enter into futures contracts 
for the purchase of long-term securities, so that it could gain rapid market 
exposure that may offset anticipated increases in the cost of securities it 
intends to purchase, while continuing to hold higher-yielding short-term 
securities or waiting for the long-term market to stabilize.

	The Fund also may purchase and sell listed put and call options on 
futures contracts.  An option on a futures contract gives the purchaser the 
right, in return for the premium paid, to assume a position in a futures 
contract (a long position if the option is a call and a short position if the 
option is a put), at a specified exercise price at any time during the option 
period.  When an option on a futures contract is exercised, delivery of the 
futures position is accompanied by cash representing the difference between 
the current market price of the futures contract and the exercise price of the 
option. The Fund may purchase put options on interest rate futures contracts 
in lieu of, and for the same purpose as, the sale of a futures contract.  It 
also may purchase such put options in order to hedge a long position in the 
underlying futures contract in the same manner as it purchases "protective 
puts" on securities.  The purchase of call options on interest rate futures 
contracts is intended to serve the same purpose as the actual purchase of the 
futures contract, and the Fund will set aside cash or cash equivalents 
sufficient to purchase the amount of portfolio securities represented by the 
underlying futures contracts.  

	The Fund may not purchase futures contracts or related options if, 
immediately thereafter, more than 30% of the Funds total assets would be so 
invested.  In purchasing and selling futures contracts and related options, 
the Fund will comply with rules and interpretations of the Commodity Futures 
Trading Commission ("CFTC"), under which the Company is excluded from 
regulation as a "commodity pool."  CFTC regulations permit use of commodity 
futures and options for bona fide hedging purposes without limitations on the 
amount of assets committed to margin and option premiums.

	The Fund will not engage in transactions involving futures contracts or 
related options for speculation but only as a hedge against changes in the 
market values of debt securities held, or intended to be purchased, by the 
Fund and where the transactions are appropriate to reduction of the Funds 
risks.  The Funds futures transactions will be entered into for traditional 
hedging purposes -- that is, futures contracts will be sold (or related put 
options purchased) to protect against a decline in the price of securities 
that the Fund owns, or futures contracts (or related call options) will be 
purchased to protect the Fund against an increase in the price of securities 
it is committed to purchase.

	There is no assurance that the Fund will be able to close out its 
futures positions at any time, in which case it would be required to maintain 
the margin deposits on the contract.  There can be no assurance that hedging 
transactions will be successful, as there may be an imperfect correlation (or 
no correlation) between movements in the prices of the futures contracts and 
of the debt securities being hedged, or price distortions due to market 
conditions in the futures markets.  Where futures contracts are purchased to 
hedge against an increase in the price of long-term securities, but the long-
term market declines and the Fund does not invest in long-term securities, the 
Fund would realize a loss on the futures contracts, which would not be offset 
by a reduction in the price of securities purchased.  Where futures contracts 
are sold to hedge against a decline in the price of the Funds long-term 
securities but the long-term market advances, the Fund would lose part or all 
of the benefit of the advance due to offsetting losses in its futures 
positions.



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